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U.S. Securities and Exchange Commission's Electronic Data Gathering, Analysis, and Retrieval system Sec8 Aug 2019 U.S. Securities and Exchange Commission's Electronic Data Gathering, Analysis, and Retrieval system, United States

Text

Entity

entityName BGC Group, Inc.
Cik 1094831
Form 10-Q
Filed 2019-08-08
Fp Q2
Fy 2019
Accn 0001564590-19-030902

Facts up to 2019-06-30

  1. Description Decrease in noncontrolling interest (for example, but not limited to, redeeming or purchasing the interests of noncontrolling shareholders, issuance of shares (interests) by the non-wholly owned subsidiary to the parent entity for other than cash, and a buyback of shares (interest) by the non-wholly owned subsidiary from the noncontrolling interests).
    Fact MinorityInterestDecreaseFromRedemptions
    Label Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 21,000
  2. Description Decrease in noncontrolling interest (for example, but not limited to, redeeming or purchasing the interests of noncontrolling shareholders, issuance of shares (interests) by the non-wholly owned subsidiary to the parent entity for other than cash, and a buyback of shares (interest) by the non-wholly owned subsidiary from the noncontrolling interests).
    Fact MinorityInterestDecreaseFromRedemptions
    Label Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 11,000
  3. Description Amount of income (expense) related to nonoperating activities, classified as other.
    Fact OtherNonoperatingIncomeExpense
    Label Other Nonoperating Income (Expense)
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 21,396,000
  4. Description Amount of income (expense) related to nonoperating activities, classified as other.
    Fact OtherNonoperatingIncomeExpense
    Label Other Nonoperating Income (Expense)
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 194,000
  5. Description Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.
    Fact IncomeTaxExpenseBenefit
    Label Income Tax Expense (Benefit)
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 44,890,000
  6. Description Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.
    Fact IncomeTaxExpenseBenefit
    Label Income Tax Expense (Benefit)
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 14,993,000
  7. Description Amount of realized and unrealized gain (loss) resulting from the difference between acquisition price and selling price or fair value of trading assets and trading liabilities, and from the firm's direct investment activity, conducted separately from customer trading activities, including, but not limited to, investments in private equity, alternative investment products, real estate, and exchanges and memberships.
    Fact PrincipalTransactionsRevenue
    Label Principal Transactions Revenue, Net
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 174,662,000
  8. Description Amount of realized and unrealized gain (loss) resulting from the difference between acquisition price and selling price or fair value of trading assets and trading liabilities, and from the firm's direct investment activity, conducted separately from customer trading activities, including, but not limited to, investments in private equity, alternative investment products, real estate, and exchanges and memberships.
    Fact PrincipalTransactionsRevenue
    Label Principal Transactions Revenue, Net
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 90,432,000
  9. Description Sum of the carrying values as of the balance sheet date of obligations incurred through that date, including liabilities incurred and payable to vendors for goods and services received, taxes, interest, rent and utilities, compensation costs, payroll taxes and fringe benefits (other than pension and postretirement obligations), contractual rights and obligations, and statutory obligations.
    Fact AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent
    Frame CY2019Q2I
    Label Accounts Payable and Accrued Liabilities
    Taxonomy us-gaap
    Unit USD
    Val 1,055,082,000
  10. Description Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities, and addition from assumption of issuance of common shares for dilutive potential common shares; of income (loss) from continuing operations available to common shareholders.
    Fact NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersDiluted
    Label Net Income (Loss) from Continuing Operations Available to Common Shareholders, Diluted
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 100,195,000
  11. Description Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities, and addition from assumption of issuance of common shares for dilutive potential common shares; of income (loss) from continuing operations available to common shareholders.
    Fact NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersDiluted
    Frame CY2019Q2
    Label Net Income (Loss) from Continuing Operations Available to Common Shareholders, Diluted
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 21,010,000
  12. Description Amount of cash inflow (outflow) of investing activities of discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.
    Fact CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations
    Label Cash Provided by (Used in) Investing Activities, Discontinued Operations
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  13. Description Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.
    Fact OperatingLeasePayments
    Label Operating Lease, Payments
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 22,904,000
  14. Description Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.
    Fact OperatingLeasePayments
    Label Operating Lease, Payments
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 11,132,000
  15. Description Amount, after the effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities not subject to a master netting arrangement and not elected to be offset.
    Fact SecuritiesSoldUnderAgreementsToRepurchase
    Frame CY2019Q2I
    Label Securities Sold under Agreements to Repurchase
    Taxonomy us-gaap
    Unit USD
    Val 1,100,000
  16. Description Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).
    Fact FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
    Frame CY2019Q2I
    Label Finite-Lived Intangible Asset, Expected Amortization, Year Three
    Taxonomy us-gaap
    Unit USD
    Val 22,300,000
  17. Description Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.
    Fact Goodwill
    Frame CY2019Q2I
    Label Goodwill
    Taxonomy us-gaap
    Unit USD
    Val 560,284,000
  18. Description The amount of expense during the period for floor brokerage fees paid to other broker-dealers to execute trades on their behalf, stock exchange fees, order flow fees, and clearance fees.
    Fact FloorBrokerageExchangeAndClearanceFees
    Label Floor Brokerage, Exchange and Clearance Fees
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 31,409,000
  19. Description The amount of expense during the period for floor brokerage fees paid to other broker-dealers to execute trades on their behalf, stock exchange fees, order flow fees, and clearance fees.
    Fact FloorBrokerageExchangeAndClearanceFees
    Label Floor Brokerage, Exchange and Clearance Fees
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 16,791,000
  20. Description Amount of investment in marketable security.
    Fact MarketableSecurities
    Frame CY2019Q2I
    Label Marketable Securities
    Taxonomy us-gaap
    Unit USD
    Val 12,772,000
  21. Description Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.
    Fact DerivativeFairValueOfDerivativeAsset
    Frame CY2019Q2I
    Label Derivative Asset, Fair Value, Gross Asset
    Taxonomy us-gaap
    Unit USD
    Val 8,870,000
  22. Description Amount of cash inflow (outflow) of financing activities of discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.
    Fact CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations
    Label Cash Provided by (Used in) Financing Activities, Discontinued Operations
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  23. Description Carrying amount, attributable to parent and noncontrolling interests, of an entity's issued and outstanding stock which is not included within permanent equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. Includes stock with a put option held by an ESOP and stock redeemable by a holder only in the event of a change in control of the issuer.
    Fact TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests
    Label Temporary Equity, Carrying Amount, Including Portion Attributable to Noncontrolling Interests
    Taxonomy us-gaap
    Unit USD
    Val 24,929,000
  24. Description Amount of unrealized and realized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).
    Fact EquitySecuritiesFvNiGainLoss
    Label Equity Securities, FV-NI, Gain (Loss)
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 5,300,000
  25. Description Amount of unrealized and realized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).
    Fact EquitySecuritiesFvNiGainLoss
    Label Equity Securities, FV-NI, Gain (Loss)
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 2,800,000
  26. Description Present value of lessee's discounted obligation for lease payments from operating lease.
    Fact OperatingLeaseLiability
    Frame CY2019Q2I
    Label Operating Lease, Liability
    Taxonomy us-gaap
    Unit USD
    Val 193,055,000
  27. Description Amount after tax and reclassification adjustments of other comprehensive income (loss).
    Fact OtherComprehensiveIncomeLossNetOfTax
    Label Other Comprehensive Income (Loss), Net of Tax
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val -2,235,000
  28. Description Amount after tax and reclassification adjustments of other comprehensive income (loss).
    Fact OtherComprehensiveIncomeLossNetOfTax
    Label Other Comprehensive Income (Loss), Net of Tax
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val -3,222,000
  29. Description Decrease in noncontrolling interest balance from payment of dividends or other distributions by the non-wholly owned subsidiary or partially owned entity, included in the consolidation of the parent entity, to the noncontrolling interest holders.
    Fact MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
    Label Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 52,841,000
  30. Description Decrease in noncontrolling interest balance from payment of dividends or other distributions by the non-wholly owned subsidiary or partially owned entity, included in the consolidation of the parent entity, to the noncontrolling interest holders.
    Fact MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
    Label Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 25,653,000
  31. Description Value received from shareholders in common stock-related transactions that are in excess of par value or stated value and amounts received from other stock-related transactions. Includes only common stock transactions (excludes preferred stock transactions). May be called contributed capital, capital in excess of par, capital surplus, or paid-in capital.
    Fact AdditionalPaidInCapitalCommonStock
    Frame CY2019Q2I
    Label Additional Paid in Capital, Common Stock
    Taxonomy us-gaap
    Unit USD
    Val 2,228,854,000
  32. Description The amount of expense incurred in the period for communication, which is the exchange of information by several methods.
    Fact Communication
    Label Communication
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 60,385,000
  33. Description The amount of expense incurred in the period for communication, which is the exchange of information by several methods.
    Fact Communication
    Label Communication
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 29,974,000
  34. Description The fair value as of the balance sheet date of firm holdings in corporate stocks (common and preferred), stock options, warrants and any other financial instrument which represents, or provides the ability to obtain, ownership rights in a corporation. Includes both pledged (to counterparties as collateral for financing transactions) and unpledged holdings.
    Fact FinancialInstrumentsOwnedCorporateEquitiesAtFairValue
    Frame CY2019Q2I
    Label Financial Instruments, Owned, Corporate Equities, at Fair Value
    Taxonomy us-gaap
    Unit USD
    Val 856,000
  35. Description Amount after tax of income (loss) from continuing operations attributable to the noncontrolling interest.
    Fact IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity
    Label Income (Loss) from Continuing Operations, Net of Tax, Attributable to Noncontrolling Interest
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 33,460,000
  36. Description Amount after tax of income (loss) from continuing operations attributable to the noncontrolling interest.
    Fact IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity
    Frame CY2019Q2
    Label Income (Loss) from Continuing Operations, Net of Tax, Attributable to Noncontrolling Interest
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 8,154,000
  37. Description Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.
    Fact RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
    Label Related Party Transaction, Expenses from Transactions with Related Party
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 9,384,000
  38. Description Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.
    Fact RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
    Label Related Party Transaction, Expenses from Transactions with Related Party
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 6,457,000
  39. Description Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).
    Fact FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
    Frame CY2019Q2I
    Label Finite-Lived Intangible Asset, Expected Amortization, Year Four
    Taxonomy us-gaap
    Unit USD
    Val 19,300,000
  40. Description Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.
    Fact RevenueFromContractWithCustomerExcludingAssessedTax
    Label Revenue from Contract with Customer, Excluding Assessed Tax
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 905,247,000
  41. Description Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.
    Fact RevenueFromContractWithCustomerExcludingAssessedTax
    Label Revenue from Contract with Customer, Excluding Assessed Tax
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 449,247,000
  42. Description Represents the aggregate of total long-term debt, including current maturities and short-term debt.
    Fact DebtLongtermAndShorttermCombinedAmount
    Frame CY2019Q2I
    Label Debt, Long-term and Short-term, Combined Amount
    Taxonomy us-gaap
    Unit USD
    Val 1,067,440,000
  43. Description Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.
    Fact DeferredIncomeTaxExpenseBenefit
    Label Deferred Income Tax Expense (Benefit)
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 369,000
  44. Description Fair value of firm holdings in corporate fixed income securities. Includes pledged and unpledged holdings.
    Fact FinancialInstrumentsOwnedCorporateDebtAtFairValue
    Frame CY2019Q2I
    Label Financial Instruments, Owned, Corporate Debt, at Fair Value
    Taxonomy us-gaap
    Unit USD
    Val 1,300,000
  45. Description Amount of cash outflow to a noncontrolling interest. Includes, but not limited to, reduction of noncontrolling interest ownership. Excludes dividends paid to the noncontrolling interest.
    Fact PaymentsToMinorityShareholders
    Label Payments to Noncontrolling Interests
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 54,128,000
  46. Description Aggregate cash proceeds received from a combination of transactions that are classified as investing activities in which assets, which may include one or more investments, are sold to third-party buyers. This element can be used by entities to aggregate proceeds from all asset sales that are classified as investing activities.
    Fact ProceedsFromSalesOfAssetsInvestingActivities
    Label Proceeds from Sales of Assets, Investing Activities
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 24,626,000
  47. Description Total cost of shares repurchased divided by the total number of shares repurchased.
    Fact TreasuryStockAcquiredAverageCostPerShare
    Label Treasury Stock Acquired, Average Cost Per Share
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 5.3
  48. Description The fair value as of the balance sheet date of firm holdings in debt obligations issued by the US government including short-term Treasury bills, medium-term Treasury notes, and long-term Treasury bonds, as well as debt issued by agencies. Includes both pledged (to counterparties as collateral for financing transactions) and unpledged holdings.
    Fact FinancialInstrumentsOwnedUSGovernmentAndAgencyObligationsAtFairValue
    Frame CY2019Q2I
    Label Financial Instruments, Owned, US Government and Agency Obligations, at Fair Value
    Taxonomy us-gaap
    Unit USD
    Val 59,929,000
  49. Description Other cash or noncash adjustments to reconcile net income to cash provided by (used in) operating activities that are not separately disclosed in the statement of cash flows (for example, cash received or cash paid during the current period for miscellaneous operating activities, net change during the reporting period in other assets or other liabilities).
    Fact OtherOperatingActivitiesCashFlowStatement
    Label Other Operating Activities, Cash Flow Statement
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 734,000
  50. Description The cash outflow associated with the development, modification or acquisition of software programs or applications for internal use (that is, not to be sold, leased or otherwise marketed to others) that qualify for capitalization.
    Fact PaymentsForSoftware
    Label Payments for Software
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 18,418,000
  51. Description Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders.
    Fact NetIncomeLossAvailableToCommonStockholdersBasic
    Label Net Income (Loss) Available to Common Stockholders, Basic
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 75,479,000
  52. Description Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders.
    Fact NetIncomeLossAvailableToCommonStockholdersBasic
    Label Net Income (Loss) Available to Common Stockholders, Basic
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 13,611,000
  53. Description Amount of increase in noncontrolling interest from sale of a portion of the parent's controlling interest.
    Fact NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest
    Label Noncontrolling Interest, Increase from Sale of Parent Equity Interest
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 23,873,000
  54. Description Amount of increase in noncontrolling interest from sale of a portion of the parent's controlling interest.
    Fact NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest
    Label Noncontrolling Interest, Increase from Sale of Parent Equity Interest
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 23,515,000
  55. Description Fair value of asset associated with financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.
    Fact DerivativeLiabilityFairValueGrossAsset
    Frame CY2019Q2I
    Label Derivative Liability, Fair Value, Gross Asset
    Taxonomy us-gaap
    Unit USD
    Val 7,411,000
  56. Description The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.
    Fact PaymentsToAcquirePropertyPlantAndEquipment
    Label Payments to Acquire Property, Plant, and Equipment
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 24,839,000
  57. Description The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.
    Fact ProfitLoss
    Label Net Income (Loss), Including Portion Attributable to Noncontrolling Interest
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 108,939,000
  58. Description The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.
    Fact ProfitLoss
    Label Net Income (Loss), Including Portion Attributable to Noncontrolling Interest
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 21,765,000
  59. Description Fair value of financial and nonfinancial obligations.
    Fact LiabilitiesFairValueDisclosure
    Frame CY2019Q2I
    Label Financial and Nonfinancial Liabilities, Fair Value Disclosure
    Taxonomy us-gaap
    Unit USD
    Val 47,745,000
  60. Description The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.
    Fact AmortizationOfIntangibleAssets
    Label Amortization of Intangible Assets
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 15,000,000
  61. Description The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.
    Fact AmortizationOfIntangibleAssets
    Label Amortization of Intangible Assets
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 7,800,000
  62. Description The aggregate fair value as of the balance sheet date of financial instruments and other positions owned by the entity including: (1) mortgages, mortgage-backed and asset backed securities; (2) US government and agency obligations; (3) state and municipal government obligations; (4) other sovereign government debt; (5) corporate obligations; (6) corporate equities; (7) principal investments; (8) derivative contracts; and (9) physical commodities. Includes both pledged and unpledged holdings.
    Fact FinancialInstrumentsOwnedAtFairValue
    Frame CY2019Q2I
    Label Financial Instruments, Owned, at Fair Value
    Taxonomy us-gaap
    Unit USD
    Val 62,085,000
  63. Description Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.
    Fact ComprehensiveIncomeNetOfTax
    Label Comprehensive Income (Loss), Net of Tax, Attributable to Parent
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 73,554,000
  64. Description Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.
    Fact ComprehensiveIncomeNetOfTax
    Label Comprehensive Income (Loss), Net of Tax, Attributable to Parent
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 10,774,000
  65. Description The increase (decrease) during the reporting period in the liability arising from securities loaned transactions.
    Fact IncreaseDecreaseInSecuritiesLoanedTransactions
    Label Increase (Decrease) in Securities Loaned Transactions
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val -2,850,000
  66. Description The net amount of all regulatory assets less all regulatory liabilities as of the end of the period.
    Fact NetRegulatoryAssets
    Frame CY2019Q2I
    Label Net Regulatory Assets
    Taxonomy us-gaap
    Unit USD
    Val 577,600,000
  67. Description Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.
    Fact BusinessCombinationConsiderationTransferred1
    Label Business Combination, Consideration Transferred
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 102,300,000
  68. Description Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer.
    Fact CapitalizedContractCostNet
    Frame CY2019Q2I
    Label Capitalized Contract Cost, Net
    Taxonomy us-gaap
    Unit USD
    Val 2,200,000
  69. Description Amount of interest income earned from interest-bearing assets owed to the entity by related party.
    Fact InterestIncomeRelatedParty
    Label Interest Income, Related Party
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  70. Description Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.
    Fact FiniteLivedIntangibleAssetsNet
    Frame CY2019Q2I
    Label Finite-Lived Intangible Assets, Net
    Taxonomy us-gaap
    Unit USD
    Val 215,098,000
  71. Description The cash inflow associated with the sale of equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.
    Fact ProceedsFromSaleOfEquityMethodInvestments
    Label Proceeds from Sale of Equity Method Investments
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,153,000
  72. Description Fair value as of the balance sheet date of derivative instrument not designated as hedging instrument and classified as an asset.
    Fact DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue
    Frame CY2019Q2I
    Label Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value
    Taxonomy us-gaap
    Unit USD
    Val 1,459,000
  73. Description Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.
    Fact StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
    Label Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest
    Taxonomy us-gaap
    Unit USD
    Val 851,446,000
  74. Description Amount remaining of a stock repurchase plan authorized.
    Fact StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1
    Frame CY2019Q2I
    Label Stock Repurchase Program, Remaining Authorized Repurchase Amount
    Taxonomy us-gaap
    Unit USD
    Val 257,265,928
  75. Description Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.
    Fact PropertyPlantAndEquipmentNet
    Frame CY2019Q2I
    Label Property, Plant and Equipment, Net
    Taxonomy us-gaap
    Unit USD
    Val 179,324,000
  76. Description The cash outflow during the period for redemption of redeemable noncontrolling interests.
    Fact PaymentsForRepurchaseOfRedeemableNoncontrollingInterest
    Label Payments for Repurchase of Redeemable Noncontrolling Interest
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 13,605,000
  77. Description Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.
    Fact DerivativeGainLossOnDerivativeNet
    Label Derivative, Gain (Loss) on Derivative, Net
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 8,044,000
  78. Description Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.
    Fact DerivativeGainLossOnDerivativeNet
    Label Derivative, Gain (Loss) on Derivative, Net
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 3,253,000
  79. Description The net cash inflow or outflow in aggregate debt due to repayments and proceeds from additional borrowings.
    Fact ProceedsFromRepaymentsOfDebt
    Label Proceeds from (Repayments of) Debt
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 324,454,000
  80. Description Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.
    Fact GoodwillForeignCurrencyTranslationGainLoss
    Label Goodwill, Foreign Currency Translation Gain (Loss)
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 301,000
  81. Description Aggregate dividends declared during the period for each share of common stock outstanding.
    Fact CommonStockDividendsPerShareDeclared
    Label Common Stock, Dividends, Per Share, Declared
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 0.28
  82. Description Aggregate dividends declared during the period for each share of common stock outstanding.
    Fact CommonStockDividendsPerShareDeclared
    Label Common Stock, Dividends, Per Share, Declared
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 0.14
  83. Description This element represents movements included in the statement of changes in stockholders' equity which are not separately disclosed or provided for elsewhere in the taxonomy.
    Fact StockholdersEquityOther
    Label Stockholders' Equity, Other
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val -230,000
  84. Description This element represents movements included in the statement of changes in stockholders' equity which are not separately disclosed or provided for elsewhere in the taxonomy.
    Fact StockholdersEquityOther
    Label Stockholders' Equity, Other
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 764,000
  85. Description Amount of cash outflow to satisfy grantee's tax withholding obligation for award under share-based payment arrangement.
    Fact PaymentsRelatedToTaxWithholdingForShareBasedCompensation
    Label Payment, Tax Withholding, Share-based Payment Arrangement
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 458,000
  86. Description Amount of unrecognized tax benefits.
    Fact UnrecognizedTaxBenefits
    Frame CY2019Q2I
    Label Unrecognized Tax Benefits
    Taxonomy us-gaap
    Unit USD
    Val 12,800,000
  87. Description Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.
    Fact OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax
    Label Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val -2,235,000
  88. Description Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.
    Fact OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax
    Label Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val -3,222,000
  89. Description The increase (decrease) during the reporting period in other obligations or expenses incurred but not yet paid.
    Fact IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities
    Label Increase (Decrease) in Other Accounts Payable and Accrued Liabilities
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val -16,883,000
  90. Description Amount of assets classified as other.
    Fact OtherAssets
    Frame CY2019Q2I
    Label Other Assets
    Taxonomy us-gaap
    Unit USD
    Val 472,138,000
  91. Description The increase (decrease) during the reporting period in the total amount due to the entity related to activities and operations with other broker dealers, and clearing organizations, including deposits.
    Fact IncreaseDecreaseInBrokerageReceivables
    Label Increase (Decrease) in Receivables from Brokers-Dealers and Clearing Organizations
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,333,792,000
  92. Description Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.
    Fact GoodwillPurchaseAccountingAdjustments
    Label Goodwill, Purchase Accounting Adjustments
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val -1,100,000
  93. Description Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).
    Fact FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
    Frame CY2019Q2I
    Label Finite-Lived Intangible Asset, Expected Amortization, Year Two
    Taxonomy us-gaap
    Unit USD
    Val 23,500,000
  94. Description Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.
    Fact InterestPaidNet
    Label Interest Paid, Excluding Capitalized Interest, Operating Activities
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 25,760,000
  95. Description The increase (decrease) during the reporting period in receivables to be collected from an entity that is controlling, under the control of, or within the same control group as the reporting entity by means of direct or indirect ownership.
    Fact IncreaseDecreaseDueFromAffiliates
    Label Increase (Decrease) Due from Affiliates
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val -2,980,000
  96. Description Amount of interest expense incurred on a debt or other obligation to related party.
    Fact InterestExpenseRelatedParty
    Label Interest Expense, Related Party
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  97. Description Amount of interest expense incurred on a debt or other obligation to related party.
    Fact InterestExpenseRelatedParty
    Label Interest Expense, Related Party
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  98. Description Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.
    Fact AssetImpairmentCharges
    Label Asset Impairment Charges
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 948,000
  99. Description Amount of other payables due to broker-dealers or clearing organizations.
    Fact OtherPayablesToBrokerDealersAndClearingOrganizations
    Frame CY2019Q2I
    Label Other Payables to Broker-Dealers and Clearing Organizations
    Taxonomy us-gaap
    Unit USD
    Val 13,491,000
  100. Description Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.
    Fact IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
    Label Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 153,829,000
  101. Description Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.
    Fact IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
    Label Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 36,758,000
  102. Description Amount of commission revenue from buying and selling securities on behalf of customers.
    Fact BrokerageCommissionsRevenue
    Label Brokerage Commissions Revenue
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 850,489,000
  103. Description Amount of commission revenue from buying and selling securities on behalf of customers.
    Fact BrokerageCommissionsRevenue
    Label Brokerage Commissions Revenue
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 420,969,000
  104. Description Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.
    Fact AmortizationOfDebtDiscountPremium
    Label Amortization of Debt Discount (Premium)
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,368,000
  105. Description Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.
    Fact ContractWithCustomerLiability
    Frame CY2019Q2I
    Label Contract with Customer, Liability
    Taxonomy us-gaap
    Unit USD
    Val 15,400,000
  106. Description Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including, but not limited to, disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.
    Fact CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
    Label Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations
    Taxonomy us-gaap
    Unit USD
    Val 616,119,000
  107. Description The compensation expense recognized during the period pertaining to the deferred compensation arrangement.
    Fact DeferredCompensationArrangementWithIndividualCompensationExpense
    Label Deferred Compensation Arrangement with Individual, Compensation Expense
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 641,000
  108. Description Amount of cash outflow for purchase of marketable security.
    Fact PaymentsToAcquireMarketableSecurities
    Label Payments to Acquire Marketable Securities
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  109. Description A fee charged for services from professionals such as doctors, lawyers and accountants. The term is often expanded to include other professions, for example, pharmacists charging to maintain a medicinal profile of a client or customer.
    Fact ProfessionalFees
    Label Professional Fees
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 43,352,000
  110. Description A fee charged for services from professionals such as doctors, lawyers and accountants. The term is often expanded to include other professions, for example, pharmacists charging to maintain a medicinal profile of a client or customer.
    Fact ProfessionalFees
    Label Professional Fees
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 23,347,000
  111. Description Amount for accounts payable to related parties.
    Fact AccountsPayableRelatedPartiesCurrentAndNoncurrent
    Frame CY2019Q2I
    Label Accounts Payable, Related Parties
    Taxonomy us-gaap
    Unit USD
    Val 66,743,000
  112. Description For an unclassified balance sheet, amounts due from related parties including affiliates, employees, joint ventures, officers and stockholders, immediate families thereof, and pension funds.
    Fact DueFromRelatedParties
    Frame CY2019Q2I
    Label Due from Related Parties
    Taxonomy us-gaap
    Unit USD
    Val 6,279,000
  113. Description Aggregate dividends paid during the period for each share of common stock outstanding.
    Fact CommonStockDividendsPerShareCashPaid
    Label Common Stock, Dividends, Per Share, Cash Paid
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 0.28
  114. Description Aggregate dividends paid during the period for each share of common stock outstanding.
    Fact CommonStockDividendsPerShareCashPaid
    Label Common Stock, Dividends, Per Share, Cash Paid
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 0.14
  115. Description Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.
    Fact AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
    Frame CY2019Q2I
    Label Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment
    Taxonomy us-gaap
    Unit USD
    Val 341,598,000
  116. Description Amount of paid and unpaid common stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK).
    Fact DividendsCommonStock
    Label Dividends, Common Stock
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 95,320,000
  117. Description Amount of paid and unpaid common stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK).
    Fact DividendsCommonStock
    Label Dividends, Common Stock
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 47,886,000
  118. Description Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any.
    Fact LiabilitiesAndStockholdersEquity
    Frame CY2019Q2I
    Label Liabilities and Equity
    Taxonomy us-gaap
    Unit USD
    Val 5,391,818,000
  119. Description Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.
    Fact AllocatedShareBasedCompensationExpense
    Label Share-based Payment Arrangement, Expense
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 26,100,000
  120. Description Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.
    Fact AllocatedShareBasedCompensationExpense
    Frame CY2019Q2
    Label Share-based Payment Arrangement, Expense
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 25,000,000
  121. Description Cost of labor directly related to good produced and service rendered. Includes, but is not limited to, payroll cost and equity-based compensation.
    Fact CostDirectLabor
    Label Cost, Direct Labor
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 578,071,000
  122. Description Cost of labor directly related to good produced and service rendered. Includes, but is not limited to, payroll cost and equity-based compensation.
    Fact CostDirectLabor
    Label Cost, Direct Labor
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 290,071,000
  123. Description Amount of increase (decrease) from effect of exchange rate changes on cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; held in foreign currencies; including, but not limited to, disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.
    Fact EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
    Label Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 107,000
  124. Description The cumulative amount of the reporting entity's undistributed earnings or deficit.
    Fact RetainedEarningsAccumulatedDeficit
    Frame CY2019Q2I
    Label Retained Earnings (Accumulated Deficit)
    Taxonomy us-gaap
    Unit USD
    Val -1,124,860,000
  125. Description Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.
    Fact DebtInstrumentRedemptionPricePercentage
    Label Debt Instrument, Redemption Price, Percentage
    Start 2019-01-01
    Taxonomy us-gaap
    Unit pure
    Val 1
  126. Description The increase (decrease) during the period in accrued salaries.
    Fact IncreaseDecreaseInAccruedSalaries
    Label Increase (Decrease) in Accrued Salaries
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val -9,054,000
  127. Description Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).
    Fact LesseeOperatingLeaseLiabilityPaymentsDueYearFour
    Frame CY2019Q2I
    Label Lessee, Operating Lease, Liability, to be Paid, Year Four
    Taxonomy us-gaap
    Unit USD
    Val 26,477,000
  128. Description Amount of revenue and income classified as other.
    Fact OtherIncome
    Label Other Income
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 9,642,000
  129. Description Amount of revenue and income classified as other.
    Fact OtherIncome
    Label Other Income
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 6,011,000
  130. Description Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.
    Fact NoncurrentAssets
    Frame CY2019Q2I
    Label Long-Lived Assets
    Taxonomy us-gaap
    Unit USD
    Val 1,515,040,000
  131. Description This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.
    Fact EquityMethodInvestments
    Frame CY2019Q2I
    Label Equity Method Investments
    Taxonomy us-gaap
    Unit USD
    Val 36,400,000
  132. Description Amount of cash inflow (outflow) of investing activities, excluding discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.
    Fact NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
    Label Net Cash Provided by (Used in) Investing Activities, Continuing Operations
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 8,052,000
  133. Description Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.
    Fact ShortTermBorrowings
    Frame CY2019Q2I
    Label Short-term Debt
    Taxonomy us-gaap
    Unit USD
    Val 5,219,000
  134. Description Amount of gain (loss) included in earnings for investments classified as other.
    Fact GainLossOnSaleOfOtherInvestments
    Label Gain (Loss) on Sale of Other Investments
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 20,395,000
  135. Description Value, after forfeiture, of shares granted under share-based payment arrangement. Excludes employee stock ownership plan (ESOP).
    Fact StockGrantedDuringPeriodValueSharebasedCompensation
    Label Shares Granted, Value, Share-based Payment Arrangement, after Forfeiture
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 4,643,000
  136. Description Value, after forfeiture, of shares granted under share-based payment arrangement. Excludes employee stock ownership plan (ESOP).
    Fact StockGrantedDuringPeriodValueSharebasedCompensation
    Label Shares Granted, Value, Share-based Payment Arrangement, after Forfeiture
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 2,625,000
  137. Description Sum of the carrying amounts as of the balance sheet date of all investments.
    Fact Investments
    Frame CY2019Q2I
    Label Investments
    Taxonomy us-gaap
    Unit USD
    Val 36,661,000
  138. Description Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. Excludes changes in equity resulting from investments by owners and distributions to owners.
    Fact ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
    Label Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 106,704,000
  139. Description Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. Excludes changes in equity resulting from investments by owners and distributions to owners.
    Fact ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
    Label Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 18,543,000
  140. Description The increase (decrease) during the reporting period in the amount due from customers for the credit sale of goods and services; includes accounts receivable and other types of receivables.
    Fact IncreaseDecreaseInAccountsAndOtherReceivables
    Label Increase (Decrease) in Accounts and Other Receivables
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 52,842,000
  141. Description Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.
    Fact PaymentsOfDividendsCommonStock
    Label Payments of Ordinary Dividends, Common Stock
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 89,003,000
  142. Description The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value.
    Fact ImpairmentOfIntangibleAssetsExcludingGoodwill
    Label Impairment of Intangible Assets (Excluding Goodwill)
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  143. Description The increase (decrease) during the reporting period in the obligations due for goods and services provided by the following types of related parties: a parent company and its subsidiaries, subsidiaries of a common parent, an entity and trust for the benefit of employees, such as pension and profit-sharing trusts that are managed by or under the trusteeship of the entities' management, an entity and its principal owners, management, or member of their immediate families, affiliates, or other parties with the ability to exert significant influence.
    Fact IncreaseDecreaseInAccountsPayableRelatedParties
    Label Increase (Decrease) in Accounts Payable, Related Parties
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 20,271,000
  144. Description The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income.
    Fact IncomeTaxesPaid
    Label Income Taxes Paid
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 13,109,000
  145. Description Value of the investment at close of period. For schedules of investments that are categorized, the value would be aggregated by category. For investment in and advances to affiliates, if operations of any controlled companies are different in character from those of the company, group such affiliates within divisions and by type of activities.
    Fact InvestmentOwnedAtFairValue
    Frame CY2019Q2I
    Label Investment Owned, at Fair Value
    Taxonomy us-gaap
    Unit USD
    Val 12,800,000
  146. Description Fair value as of the balance sheet date of all foreign currency derivative liabilities not designated as hedging instruments.
    Fact ForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue
    Frame CY2019Q2I
    Label Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Liability at Fair Value
    Taxonomy us-gaap
    Unit USD
    Val 1,831,000
  147. Description Amount of cash inflow (outflow) of operating activities of discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.
    Fact CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations
    Label Cash Provided by (Used in) Operating Activities, Discontinued Operations
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  148. Description Amount of equity impact of cash distribution declared to unit-holder of limited partnership (LP).
    Fact DistributionMadeToLimitedPartnerCashDistributionsDeclared
    Label Distribution Made to Limited Partner, Cash Distributions Declared
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 9,300,000
  149. Description Amount of equity impact of cash distribution declared to unit-holder of limited partnership (LP).
    Fact DistributionMadeToLimitedPartnerCashDistributionsDeclared
    Frame CY2019Q2
    Label Distribution Made to Limited Partner, Cash Distributions Declared
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 4,800,000
  150. Description The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.
    Fact LongTermDebtFairValue
    Frame CY2019Q2I
    Label Long-term Debt, Fair Value
    Taxonomy us-gaap
    Unit USD
    Val 776,370,000
  151. Description Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.
    Fact ContractWithCustomerAssetNet
    Frame CY2019Q2I
    Label Contract with Customer, Asset, after Allowance for Credit Loss
    Taxonomy us-gaap
    Unit USD
    Val 610,300,000
  152. Description The increase (decrease) during the reporting period in the aggregate amount of obligations incurred arising from transactions with broker-dealers, such as amounts due on margin and unsettled cash transactions; includes payables to brokers, dealers and clearing organizations.
    Fact IncreaseDecreaseInPayablesToBrokerDealers
    Label Increase (Decrease) in Payables to Broker-Dealers and Clearing Organizations
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,337,521,000
  153. Description Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.
    Fact GoodwillAcquiredDuringPeriod
    Label Goodwill, Acquired During Period
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 55,872,000
  154. Description Fair value as of the balance sheet date of derivative instrument not designated as hedging instrument and classified as a liability.
    Fact DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue
    Frame CY2019Q2I
    Label Derivative Instruments Not Designated as Hedging Instruments, Liability, at Fair Value
    Taxonomy us-gaap
    Unit USD
    Val 5,593,000
  155. Description Amount of the cost of borrowed funds accounted for as interest expense.
    Fact InterestExpense
    Label Interest Expense
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 28,183,000
  156. Description Amount of the cost of borrowed funds accounted for as interest expense.
    Fact InterestExpense
    Label Interest Expense
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 14,985,000
  157. Description Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.
    Fact CashAndCashEquivalentsAtCarryingValue
    Frame CY2019Q2I
    Label Cash and Cash Equivalents, at Carrying Value
    Taxonomy us-gaap
    Unit USD
    Val 399,429,000
  158. Description Amount of cash inflow (outflow) of financing activities, excluding discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.
    Fact NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
    Label Net Cash Provided by (Used in) Financing Activities, Continuing Operations
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 132,896,000
  159. Description Amount of right to receive cash and securities on deposit with clearing organizations. Clearing organizations perform post trade processing and trade comparisons among numerous broker-dealers and act as settlement agents between buying and selling broker-dealers.
    Fact ReceivablesFromClearingOrganizations
    Frame CY2019Q2I
    Label Receivables from Clearing Organizations
    Taxonomy us-gaap
    Unit USD
    Val 153,826,000
  160. Description Amount of lessee's undiscounted obligation for lease payment for operating lease due after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).
    Fact LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive
    Frame CY2019Q2I
    Label Lessee, Operating Lease, Liability, to be Paid, after Year Five
    Taxonomy us-gaap
    Unit USD
    Val 139,376,000
  161. Description Amount receivable as the result of a fail-to-deliver. A fail-to-deliver is a securities sale to another broker-dealer that has not been delivered to buying broker-dealer by the close of business on the settlement date.
    Fact SecuritiesFailedToDeliver
    Frame CY2019Q2I
    Label Securities Failed-to-Deliver
    Taxonomy us-gaap
    Unit USD
    Val 2,107,905,000
  162. Description Number of shares that have been repurchased during the period and are being held in treasury.
    Fact TreasuryStockSharesAcquired
    Label Treasury Stock, Shares, Acquired
    Start 2019-01-01
    Taxonomy us-gaap
    Unit shares
    Val 233,172
  163. Description Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which is directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent (that is, noncontrolling interest, previously referred to as minority interest).
    Fact MinorityInterest
    Frame CY2019Q2I
    Label Stockholders' Equity Attributable to Noncontrolling Interest
    Taxonomy us-gaap
    Unit USD
    Val 85,109,000
  164. Description The cash outflow to repay long-term debt that is wholly or partially secured by collateral. Excludes repayments of tax exempt secured debt.
    Fact RepaymentsOfSecuredDebt
    Label Repayments of Secured Debt
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 25,594,000
  165. Description Amount of impairment loss from capitalized computer software costs.
    Fact CapitalizedComputerSoftwareImpairments1
    Label Capitalized Computer Software, Impairments
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 900,000
  166. Description Amount of impairment loss from capitalized computer software costs.
    Fact CapitalizedComputerSoftwareImpairments1
    Label Capitalized Computer Software, Impairments
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 600,000
  167. Description Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.
    Fact DerivativeAssets
    Frame CY2019Q2I
    Label Derivative Asset
    Taxonomy us-gaap
    Unit USD
    Val 1,459,000
  168. Description Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.
    Fact IndefiniteLivedIntangibleAssetsExcludingGoodwill
    Frame CY2019Q2I
    Label Indefinite-lived Intangible Assets (Excluding Goodwill)
    Taxonomy us-gaap
    Unit USD
    Val 95,653,000
  169. Description Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.
    Fact WeightedAverageNumberOfSharesOutstandingBasic
    Label Weighted Average Number of Shares Outstanding, Basic
    Start 2019-01-01
    Taxonomy us-gaap
    Unit shares
    Val 339,845,000
  170. Description Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.
    Fact WeightedAverageNumberOfSharesOutstandingBasic
    Label Weighted Average Number of Shares Outstanding, Basic
    Start 2019-04-01
    Taxonomy us-gaap
    Unit shares
    Val 341,272,000
  171. Description Carrying amount of collateralized debt obligations with maturities initially due after one year or beyond the operating cycle, if longer, excluding the current portion. Obligations include, but not limited to, mortgage loans, chattel loans, and other borrowings secured by assets.
    Fact SecuredLongTermDebt
    Frame CY2019Q2I
    Label Secured Long-term Debt, Noncurrent
    Taxonomy us-gaap
    Unit USD
    Val 40,458,000
  172. Description Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.
    Fact OperatingExpenses
    Label Operating Expenses
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 983,461,000
  173. Description Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.
    Fact OperatingExpenses
    Label Operating Expenses
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 513,742,000
  174. Description The increase (decrease) during the reporting period in the liability under agreements to repurchase securities that were sold.
    Fact IncreaseDecreaseInPayablesUnderRepurchaseAgreements
    Label Increase (Decrease) in Payables under Repurchase Agreements
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 114,000
  175. Description Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.
    Fact AssetsFairValueDisclosure
    Frame CY2019Q2I
    Label Assets, Fair Value Disclosure
    Taxonomy us-gaap
    Unit USD
    Val 76,316,000
  176. Description For an unclassified balance sheet, the amount of fees and other revenue, excluding investment income receivable, earned but not yet received, which were recognized in conformity with revenue recognition criteria based on estimates or specific contractual terms.
    Fact AccruedFeesAndOtherRevenueReceivable
    Frame CY2019Q2I
    Label Accrued Fees and Other Revenue Receivable
    Taxonomy us-gaap
    Unit USD
    Val 602,279,000
  177. Description Amount before accumulated amortization of intangible assets, excluding goodwill.
    Fact IntangibleAssetsGrossExcludingGoodwill
    Frame CY2019Q2I
    Label Intangible Assets, Gross (Excluding Goodwill)
    Taxonomy us-gaap
    Unit USD
    Val 413,577,000
  178. Description Amount receivable from broker-dealers and clearing organizations, including, but not limited to, securities failed-to-deliver, certain deposits for securities borrowed, open transactions, good faith and margin deposits, commissions and floor brokerage receivables.
    Fact ReceivablesFromBrokersDealersAndClearingOrganizations
    Frame CY2019Q2I
    Label Receivables from Brokers-Dealers and Clearing Organizations
    Taxonomy us-gaap
    Unit USD
    Val 2,273,726,000
  179. Description Amount of total risk-based capital exceeding minimum required for capital adequacy as defined by regulatory framework.
    Fact ExcessCapital
    Frame CY2019Q2I
    Label Banking Regulation, Total Risk-Based Capital, Excess, Actual
    Taxonomy us-gaap
    Unit USD
    Val 376,800,000
  180. Description The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.
    Fact ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
    Frame CY2019Q2I
    Label Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant
    Taxonomy us-gaap
    Unit shares
    Val 148,100,000
  181. Description Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.
    Fact DerivativeFairValueOfDerivativeLiability
    Frame CY2019Q2I
    Label Derivative Liability, Fair Value, Gross Liability
    Taxonomy us-gaap
    Unit USD
    Val 13,004,000
  182. Description Carrying amount (including both current and noncurrent portions) of accrued known and estimated losses incurred as of the balance sheet date for which no insurance coverage exists, and for which a claim has been made or is probable of being asserted, typically arising from workmen's compensation-type of incidents and personal injury to nonemployees from accidents on the entity's property.
    Fact SelfInsuranceReserve
    Frame CY2019Q2I
    Label Self Insurance Reserve
    Taxonomy us-gaap
    Unit USD
    Val 1,800,000
  183. Description Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.
    Fact Liabilities
    Frame CY2019Q2I
    Label Liabilities
    Taxonomy us-gaap
    Unit USD
    Val 4,515,443,000
  184. Description Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.
    Fact PropertyPlantAndEquipmentGross
    Frame CY2019Q2I
    Label Property, Plant and Equipment, Gross
    Taxonomy us-gaap
    Unit USD
    Val 520,922,000
  185. Description Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.
    Fact Assets
    Frame CY2019Q2I
    Label Assets
    Taxonomy us-gaap
    Unit USD
    Val 5,391,818,000
  186. Description Fair value, after effects of master netting arrangements, deduction of assets not subject to a master netting arrangement and elected not to be offset, of financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, offset against an obligation to return collateral.
    Fact DerivativeAssetFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection
    Frame CY2019Q2I
    Label Derivative Asset, Fair Value, Offset Against Collateral, Net of Not Subject to Master Netting Arrangement, Policy Election
    Taxonomy us-gaap
    Unit USD
    Val 1,459,000
  187. Description Amount of amortization for asset, excluding financial asset and goodwill, lacking physical substance with finite life expected to be recognized after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).
    Fact FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive
    Frame CY2019Q2I
    Label Finite-Lived Intangible Asset, Expected Amortization, after Year Five
    Taxonomy us-gaap
    Unit USD
    Val 116,600,000
  188. Description Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease.
    Fact LesseeOperatingLeaseLiabilityUndiscountedExcessAmount
    Frame CY2019Q2I
    Label Lessee, Operating Lease, Liability, Undiscounted Excess Amount
    Taxonomy us-gaap
    Unit USD
    Val 67,684,000
  189. Description Amount of cash subject to withdrawal restrictions, restricted deposits held as compensating balances, and cash and securities segregated in compliance with regulations (such as cash deposited in a special reserve account for the exclusive benefit of customers).
    Fact CashAndSecuritiesSegregatedUnderFederalAndOtherRegulations
    Frame CY2019Q2I
    Label Cash and Securities Segregated under Federal and Other Regulations
    Taxonomy us-gaap
    Unit USD
    Val 216,690,000
  190. Description Amount of other receivables due from broker-dealers or clearing organizations.
    Fact OtherReceivablesFromBrokerDealersAndClearingOrganizations
    Frame CY2019Q2I
    Label Other Receivables from Broker-Dealers and Clearing Organizations
    Taxonomy us-gaap
    Unit USD
    Val 10,536,000
  191. Description The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.
    Fact EarningsPerShareBasic
    Label Earnings Per Share, Basic
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 0.22
  192. Description The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.
    Fact EarningsPerShareBasic
    Label Earnings Per Share, Basic
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 0.04
  193. Description The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.
    Fact NetIncomeLoss
    Label Net Income (Loss) Attributable to Parent
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 75,479,000
  194. Description The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.
    Fact NetIncomeLoss
    Label Net Income (Loss) Attributable to Parent
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 13,611,000
  195. Description Amount of expense classified as other.
    Fact OtherExpenses
    Label Other Expenses
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 45,780,000
  196. Description Amount of expense classified as other.
    Fact OtherExpenses
    Label Other Expenses
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 21,765,000
  197. Description Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in remainder of current fiscal year.
    Fact FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear
    Frame CY2019Q2I
    Label Finite-Lived Intangible Asset, Expected Amortization, Remainder of Fiscal Year
    Taxonomy us-gaap
    Unit USD
    Val 14,700,000
  198. Description Fair value portion of asset contracts related to the exchange of different currencies, including, but not limited to, foreign currency options, forward contracts, and swaps.
    Fact ForeignCurrencyContractAssetFairValueDisclosure
    Frame CY2019Q2I
    Label Foreign Currency Contract, Asset, Fair Value Disclosure
    Taxonomy us-gaap
    Unit USD
    Val 1,156,000
  199. Description Weighted average discount rate for operating lease calculated at point in time.
    Fact OperatingLeaseWeightedAverageDiscountRatePercent
    Frame CY2019Q2I
    Label Operating Lease, Weighted Average Discount Rate, Percent
    Taxonomy us-gaap
    Unit pure
    Val 0.06
  200. Description The amount allocated to treasury stock. Treasury stock is common and preferred shares of an entity that were issued, repurchased by the entity, and are held in its treasury.
    Fact TreasuryStockValue
    Frame CY2019Q2I
    Label Treasury Stock, Value
    Taxonomy us-gaap
    Unit USD
    Val 315,210,000
  201. Description The total expense recognized in the period for promotion, public relations, and brand or product advertising.
    Fact MarketingAndAdvertisingExpense
    Label Marketing and Advertising Expense
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 39,893,000
  202. Description The total expense recognized in the period for promotion, public relations, and brand or product advertising.
    Fact MarketingAndAdvertisingExpense
    Label Marketing and Advertising Expense
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 21,491,000
  203. Description Amount payable as the result of fail-to-receive. A fail-to-receive is a securities purchase from another broker-dealer not received from the selling broker-dealer by the close of business on the settlement date.
    Fact SecuritiesFailedToReceive
    Frame CY2019Q2I
    Label Securities Failed-to-Receive
    Taxonomy us-gaap
    Unit USD
    Val 1,845,935,000
  204. Description The cash outflow to reacquire common stock during the period.
    Fact PaymentsForRepurchaseOfCommonStock
    Label Payments for Repurchase of Common Stock
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,236,000
  205. Description Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).
    Fact LesseeOperatingLeaseLiabilityPaymentsDueYearTwo
    Frame CY2019Q2I
    Label Lessee, Operating Lease, Liability, to be Paid, Year Two
    Taxonomy us-gaap
    Unit USD
    Val 30,397,000
  206. Description The increase (decrease) during the reporting period in the aggregate value of financial instruments used in operating activities, including trading securities, risk management instruments, and other short-term trading instruments.
    Fact IncreaseDecreaseInFinancialInstrumentsUsedInOperatingActivities
    Label Increase (Decrease) in Financial Instruments Used in Operating Activities
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 3,677,000
  207. Description Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).
    Fact EquitySecuritiesFvNi
    Frame CY2019Q2I
    Label Equity Securities, FV-NI
    Taxonomy us-gaap
    Unit USD
    Val 12,772,000
  208. Description Amount payable to broker-dealers and clearing organizations, including, but not limited to, securities failed-to-receive, certain deposits received for securities loaned, open transactions, and floor-brokerage payables.
    Fact PayablesToBrokerDealersAndClearingOrganizations
    Frame CY2019Q2I
    Label Payables to Broker-Dealers and Clearing Organizations
    Taxonomy us-gaap
    Unit USD
    Val 2,107,383,000
  209. Description Amount of unrealized gain (loss) on investment in marketable security.
    Fact MarketableSecuritiesUnrealizedGainLoss
    Label Marketable Securities, Unrealized Gain (Loss)
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,768,000
  210. Description Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits.
    Fact EmployeeRelatedLiabilitiesCurrentAndNoncurrent
    Frame CY2019Q2I
    Label Employee-related Liabilities
    Taxonomy us-gaap
    Unit USD
    Val 205,405,000
  211. Description Amount of operating interest income, including, but not limited to, amortization and accretion of premiums and discounts on securities.
    Fact InterestIncomeOperating
    Label Interest Income, Operating
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 11,478,000
  212. Description Amount of operating interest income, including, but not limited to, amortization and accretion of premiums and discounts on securities.
    Fact InterestIncomeOperating
    Frame CY2019Q2
    Label Interest Income, Operating
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 7,813,000
  213. Description Amount after tax of income (loss) from continuing operations including portion attributable to the noncontrolling interest.
    Fact IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
    Label Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 108,939,000
  214. Description Amount after tax of income (loss) from continuing operations including portion attributable to the noncontrolling interest.
    Fact IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
    Frame CY2019Q2
    Label Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 21,765,000
  215. Description Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.
    Fact LongTermDebtNoncurrent
    Frame CY2019Q2I
    Label Long-term Debt, Excluding Current Maturities
    Taxonomy us-gaap
    Unit USD
    Val 1,062,221,000
  216. Description Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.
    Fact ContractWithCustomerLiabilityRevenueRecognized
    Label Contract with Customer, Liability, Revenue Recognized
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 8,100,000
  217. Description Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.
    Fact ContractWithCustomerLiabilityRevenueRecognized
    Label Contract with Customer, Liability, Revenue Recognized
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 7,000,000
  218. Description Amount of increase (decrease) in cash, cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including effect from exchange rate change. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.
    Fact CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
    Label Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 199,341,000
  219. Description Amount of cash outflow, not made soon after acquisition date of business combination, to settle contingent consideration liability up to amount recognized at acquisition date, including, but not limited to, measurement period adjustment and less amount paid soon after acquisition date.
    Fact PaymentForContingentConsiderationLiabilityFinancingActivities
    Label Payment for Contingent Consideration Liability, Financing Activities
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 7,534,000
  220. Description Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.
    Fact LongTermDebt
    Frame CY2019Q2I
    Label Long-term Debt
    Taxonomy us-gaap
    Unit USD
    Val 743,083,000
  221. Description Number of shares related to Restricted Stock Award forfeited during the period.
    Fact StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited
    Label Stock Issued During Period, Shares, Restricted Stock Award, Forfeited
    Start 2019-01-01
    Taxonomy us-gaap
    Unit shares
    Val 0
  222. Description Amount of realized gain (loss) on investment in marketable security, including other-than-temporary impairment (OTTI).
    Fact MarketableSecuritiesRealizedGainLoss
    Label Marketable Securities, Realized Gain (Loss)
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 3,528,000
  223. Description Fair value of liability associated with financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.
    Fact DerivativeAssetFairValueGrossLiability
    Frame CY2019Q2I
    Label Derivative Asset, Fair Value, Gross Liability
    Taxonomy us-gaap
    Unit USD
    Val 7,411,000
  224. Description Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.
    Fact StockholdersEquity
    Frame CY2019Q2I
    Label Stockholders' Equity Attributable to Parent
    Taxonomy us-gaap
    Unit USD
    Val 766,337,000
  225. Description Amount, after the effects of master netting arrangements, of securities loaned to entities in exchange for collateral. Includes liabilities not subject to a master netting arrangement and not elected to be offset.
    Fact SecuritiesLoaned
    Frame CY2019Q2I
    Label Securities Loaned
    Taxonomy us-gaap
    Unit USD
    Val 12,290,000
  226. Description Amount of lessee's right to use underlying asset under operating lease.
    Fact OperatingLeaseRightOfUseAsset
    Frame CY2019Q2I
    Label Operating Lease, Right-of-Use Asset
    Taxonomy us-gaap
    Unit USD
    Val 176,087,000
  227. Description Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) from continuing operations available to common shareholders.
    Fact NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic
    Label Net Income (Loss) from Continuing Operations Available to Common Shareholders, Basic
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 75,479,000
  228. Description Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) from continuing operations available to common shareholders.
    Fact NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic
    Frame CY2019Q2
    Label Net Income (Loss) from Continuing Operations Available to Common Shareholders, Basic
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 13,611,000
  229. Description Amount of cash inflow (outflow) from operating activities, excluding discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.
    Fact NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
    Label Net Cash Provided by (Used in) Operating Activities, Continuing Operations
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 58,286,000
  230. Description The amount of net income (loss) from continuing operations per each share of common stock or unit outstanding during the reporting period.
    Fact IncomeLossFromContinuingOperationsPerBasicShare
    Label Income (Loss) from Continuing Operations, Per Basic Share
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 0.22
  231. Description The amount of net income (loss) from continuing operations per each share of common stock or unit outstanding during the reporting period.
    Fact IncomeLossFromContinuingOperationsPerBasicShare
    Frame CY2019Q2
    Label Income (Loss) from Continuing Operations, Per Basic Share
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 0.04
  232. Description Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income (loss) and other comprehensive income (loss), attributable to noncontrolling interests. Excludes changes in equity resulting from investments by owners and distributions to owners.
    Fact ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest
    Label Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 33,150,000
  233. Description Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income (loss) and other comprehensive income (loss), attributable to noncontrolling interests. Excludes changes in equity resulting from investments by owners and distributions to owners.
    Fact ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest
    Label Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 7,769,000
  234. Description Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.
    Fact FiniteLivedIntangibleAssetsGross
    Frame CY2019Q2I
    Label Finite-Lived Intangible Assets, Gross
    Taxonomy us-gaap
    Unit USD
    Val 317,924,000
  235. Description Amount of lessee's undiscounted obligation for lease payment for operating lease having initial or remaining lease term in excess of one year to be paid in remainder of current fiscal year.
    Fact LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear
    Frame CY2019Q2I
    Label Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year
    Taxonomy us-gaap
    Unit USD
    Val 18,862,000
  236. Description Fair value, after effects of master netting arrangements, deduction of liabilities not subject to a master netting arrangement and elected not to be offset, of financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, offset against the right to receive collateral.
    Fact DerivativeLiabilityFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection
    Frame CY2019Q2I
    Label Derivative Liability, Fair Value, Offset Against Collateral, Net of Not Subject to Master Netting Arrangement, Policy Election
    Taxonomy us-gaap
    Unit USD
    Val 5,593,000
  237. Description Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.
    Fact DerivativeLiabilities
    Frame CY2019Q2I
    Label Derivative Liability
    Taxonomy us-gaap
    Unit USD
    Val 5,593,000
  238. Description Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).
    Fact LesseeOperatingLeaseLiabilityPaymentsDueYearFive
    Frame CY2019Q2I
    Label Lessee, Operating Lease, Liability, to be Paid, Year Five
    Taxonomy us-gaap
    Unit USD
    Val 22,389,000
  239. Description Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.
    Fact StockIssuedDuringPeriodValueNewIssues
    Label Stock Issued During Period, Value, New Issues
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 556,000
  240. Description Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.
    Fact StockIssuedDuringPeriodValueNewIssues
    Label Stock Issued During Period, Value, New Issues
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 253,000
  241. Description The portion of net income or loss attributable to temporary equity interest.
    Fact TemporaryEquityNetIncome
    Label Temporary Equity, Net Income
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,297,000
  242. Description Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.
    Fact AccumulatedOtherComprehensiveIncomeLossNetOfTax
    Frame CY2019Q2I
    Label Accumulated Other Comprehensive Income (Loss), Net of Tax
    Taxonomy us-gaap
    Unit USD
    Val -26,390,000
  243. Description Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).
    Fact Revenues
    Label Revenues
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,095,938,000
  244. Description Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).
    Fact Revenues
    Label Revenues
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 551,187,000
  245. Description Amount of income (loss) for proportionate share of equity method investee's income (loss).
    Fact IncomeLossFromEquityMethodInvestments
    Label Income (Loss) from Equity Method Investments
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,521,000
  246. Description Amount of income (loss) for proportionate share of equity method investee's income (loss).
    Fact IncomeLossFromEquityMethodInvestments
    Label Income (Loss) from Equity Method Investments
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 738,000
  247. Description Amount of net occupancy expense that may include items, such as depreciation of facilities and equipment, lease expenses, property taxes and property and casualty insurance expense.
    Fact OccupancyNet
    Label Occupancy, Net
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 91,111,000
  248. Description Amount of net occupancy expense that may include items, such as depreciation of facilities and equipment, lease expenses, property taxes and property and casualty insurance expense.
    Fact OccupancyNet
    Label Occupancy, Net
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val 45,109,000
  249. Description Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.
    Fact NumberOfReportableSegments
    Label Number of Reportable Segments
    Start 2019-01-01
    Taxonomy us-gaap
    Unit Segment
    Val 1
  250. Description Amount payable to broker-dealers or clearing organizations for executing or clearing trades or orders.
    Fact CommissionsPayableToBrokerDealersAndClearingOrganizations
    Frame CY2019Q2I
    Label Commissions Payable to Broker-Dealers and Clearing Organizations
    Taxonomy us-gaap
    Unit USD
    Val 242,075,000
  251. Description Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).
    Fact FiniteLivedIntangibleAssetsAmortizationExpenseYearFive
    Frame CY2019Q2I
    Label Finite-Lived Intangible Asset, Expected Amortization, Year Five
    Taxonomy us-gaap
    Unit USD
    Val 18,700,000
  252. Description The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.
    Fact DepreciationDepletionAndAmortization
    Label Depreciation, Depletion and Amortization
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 38,534,000
  253. Description The increase (decrease) during the reporting period in the amount due within one year (or one business cycle) from employees for floats, allowances and loans (generally evidenced by promissory notes).
    Fact IncreaseDecreaseInDueFromEmployeeCurrent
    Label Increase (Decrease) in Due from Employee, Current
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 59,268,000
  254. Description The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.
    Fact PaymentsToAcquireEquityMethodInvestments
    Label Payments to Acquire Equity Method Investments
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 735,000
  255. Description Amount of interest expense accrued for an underpayment of income taxes.
    Fact UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued
    Frame CY2019Q2I
    Label Unrecognized Tax Benefits, Interest on Income Taxes Accrued
    Taxonomy us-gaap
    Unit USD
    Val 4,000,000
  256. Description Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).
    Fact LesseeOperatingLeaseLiabilityPaymentsDueYearThree
    Frame CY2019Q2I
    Label Lessee, Operating Lease, Liability, to be Paid, Year Three
    Taxonomy us-gaap
    Unit USD
    Val 23,238,000
  257. Description Amount of lessee's undiscounted obligation for lease payment for operating lease.
    Fact LesseeOperatingLeaseLiabilityPaymentsDue
    Frame CY2019Q2I
    Label Lessee, Operating Lease, Liability, to be Paid
    Taxonomy us-gaap
    Unit USD
    Val 260,739,000
  258. Description The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).
    Fact NonoperatingIncomeExpense
    Label Nonoperating Income (Expense)
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 41,352,000
  259. Description The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).
    Fact NonoperatingIncomeExpense
    Label Nonoperating Income (Expense)
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD
    Val -687,000
  260. Description Amount of increase (decrease) in operating assets classified as other.
    Fact IncreaseDecreaseInOtherOperatingAssets
    Label Increase (Decrease) in Other Operating Assets
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD
    Val 15,050,000
  261. Description For an unclassified balance sheet, amounts due from an Entity employee, not to include stockholders or officers.
    Fact DueFromEmployees
    Frame CY2019Q2I
    Label Due from Employees
    Taxonomy us-gaap
    Unit USD
    Val 259,400,000
  262. Description Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.
    Fact IntangibleAssetsNetExcludingGoodwill
    Frame CY2019Q2I
    Label Intangible Assets, Net (Excluding Goodwill)
    Taxonomy us-gaap
    Unit USD
    Val 310,751,000
  263. Description Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.
    Fact FiniteLivedIntangibleAssetsAccumulatedAmortization
    Frame CY2019Q2I
    Label Finite-Lived Intangible Assets, Accumulated Amortization
    Taxonomy us-gaap
    Unit USD
    Val 102,826,000
  264. Description The amount of net income (loss) derived from continuing operations during the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.
    Fact IncomeLossFromContinuingOperationsPerDilutedShare
    Label Income (Loss) from Continuing Operations, Per Diluted Share
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 0.21
  265. Description The amount of net income (loss) derived from continuing operations during the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.
    Fact IncomeLossFromContinuingOperationsPerDilutedShare
    Frame CY2019Q2
    Label Income (Loss) from Continuing Operations, Per Diluted Share
    Start 2019-04-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 0.04
  266. Description Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.
    Fact DerivativeNotionalAmount
    Frame CY2019Q2I
    Label Derivative, Notional Amount
    Taxonomy invest
    Unit USD
    Val 10,640,864,000

Facts up to 2019-03-31

  1. Description Total cost of shares repurchased divided by the total number of shares repurchased.
    Fact TreasuryStockAcquiredAverageCostPerShare
    Label Treasury Stock Acquired, Average Cost Per Share
    Start 2019-01-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 5.3
  2. Description Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.
    Fact StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
    Label Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest
    Taxonomy us-gaap
    Unit USD
    Val 878,646,000
  3. Description Number of shares that have been repurchased during the period and are being held in treasury.
    Fact TreasuryStockSharesAcquired
    Label Treasury Stock, Shares, Acquired
    Start 2019-01-01
    Taxonomy us-gaap
    Unit shares
    Val 233,172

Facts up to 2018-12-31

  1. Description Sum of the carrying values as of the balance sheet date of obligations incurred through that date, including liabilities incurred and payable to vendors for goods and services received, taxes, interest, rent and utilities, compensation costs, payroll taxes and fringe benefits (other than pension and postretirement obligations), contractual rights and obligations, and statutory obligations.
    Fact AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent
    Label Accounts Payable and Accrued Liabilities
    Taxonomy us-gaap
    Unit USD
    Val 754,819,000
  2. Description Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.
    Fact OperatingLeasesFutureMinimumPaymentsDueThereafter
    Label Operating Leases, Future Minimum Payments, Due Thereafter
    Taxonomy us-gaap
    Unit USD
    Val 152,884,000
  3. Description Amount, after the effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities not subject to a master netting arrangement and not elected to be offset.
    Fact SecuritiesSoldUnderAgreementsToRepurchase
    Label Securities Sold under Agreements to Repurchase
    Taxonomy us-gaap
    Unit USD
    Val 986,000
  4. Description Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.
    Fact Goodwill
    Label Goodwill
    Taxonomy us-gaap
    Unit USD
    Val 504,646,000
  5. Description Amount of investment in marketable security.
    Fact MarketableSecurities
    Label Marketable Securities
    Taxonomy us-gaap
    Unit USD
    Val 32,064,000
  6. Description Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.
    Fact DerivativeFairValueOfDerivativeAsset
    Label Derivative Asset, Fair Value, Gross Asset
    Taxonomy us-gaap
    Unit USD
    Val 542,421,000
  7. Description Carrying amount, attributable to parent and noncontrolling interests, of an entity's issued and outstanding stock which is not included within permanent equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. Includes stock with a put option held by an ESOP and stock redeemable by a holder only in the event of a change in control of the issuer.
    Fact TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests
    Label Temporary Equity, Carrying Amount, Including Portion Attributable to Noncontrolling Interests
    Taxonomy us-gaap
    Unit USD
    Val 24,706,000
  8. Description Value received from shareholders in common stock-related transactions that are in excess of par value or stated value and amounts received from other stock-related transactions. Includes only common stock transactions (excludes preferred stock transactions). May be called contributed capital, capital in excess of par, capital surplus, or paid-in capital.
    Fact AdditionalPaidInCapitalCommonStock
    Label Additional Paid in Capital, Common Stock
    Taxonomy us-gaap
    Unit USD
    Val 2,208,221,000
  9. Description The fair value as of the balance sheet date of firm holdings in corporate stocks (common and preferred), stock options, warrants and any other financial instrument which represents, or provides the ability to obtain, ownership rights in a corporation. Includes both pledged (to counterparties as collateral for financing transactions) and unpledged holdings.
    Fact FinancialInstrumentsOwnedCorporateEquitiesAtFairValue
    Label Financial Instruments, Owned, Corporate Equities, at Fair Value
    Taxonomy us-gaap
    Unit USD
    Val 620,000
  10. Description Represents the aggregate of total long-term debt, including current maturities and short-term debt.
    Fact DebtLongtermAndShorttermCombinedAmount
    Label Debt, Long-term and Short-term, Combined Amount
    Taxonomy us-gaap
    Unit USD
    Val 768,710,000
  11. Description The fair value as of the balance sheet date of firm holdings in debt obligations issued by the US government including short-term Treasury bills, medium-term Treasury notes, and long-term Treasury bonds, as well as debt issued by agencies. Includes both pledged (to counterparties as collateral for financing transactions) and unpledged holdings.
    Fact FinancialInstrumentsOwnedUSGovernmentAndAgencyObligationsAtFairValue
    Label Financial Instruments, Owned, US Government and Agency Obligations, at Fair Value
    Taxonomy us-gaap
    Unit USD
    Val 57,788,000
  12. Description Fair value of asset associated with financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.
    Fact DerivativeLiabilityFairValueGrossAsset
    Label Derivative Liability, Fair Value, Gross Asset
    Taxonomy us-gaap
    Unit USD
    Val 540,442,000
  13. Description Fair value of financial and nonfinancial obligations.
    Fact LiabilitiesFairValueDisclosure
    Label Financial and Nonfinancial Liabilities, Fair Value Disclosure
    Taxonomy us-gaap
    Unit USD
    Val 137,113,000
  14. Description The aggregate fair value as of the balance sheet date of financial instruments and other positions owned by the entity including: (1) mortgages, mortgage-backed and asset backed securities; (2) US government and agency obligations; (3) state and municipal government obligations; (4) other sovereign government debt; (5) corporate obligations; (6) corporate equities; (7) principal investments; (8) derivative contracts; and (9) physical commodities. Includes both pledged and unpledged holdings.
    Fact FinancialInstrumentsOwnedAtFairValue
    Label Financial Instruments, Owned, at Fair Value
    Taxonomy us-gaap
    Unit USD
    Val 58,408,000
  15. Description The number of limited partner units outstanding.
    Fact LimitedPartnersCapitalAccountUnitsOutstanding
    Label Limited Partners' Capital Account, Units Outstanding
    Taxonomy us-gaap
    Unit shares
    Val 100,000
  16. Description Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.
    Fact BusinessCombinationConsiderationTransferred1
    Label Business Combination, Consideration Transferred
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 94,200,000
  17. Description Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer.
    Fact CapitalizedContractCostNet
    Label Capitalized Contract Cost, Net
    Taxonomy us-gaap
    Unit USD
    Val 0
  18. Description Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.
    Fact FiniteLivedIntangibleAssetsNet
    Label Finite-Lived Intangible Assets, Net
    Taxonomy us-gaap
    Unit USD
    Val 209,846,000
  19. Description Fair value as of the balance sheet date of derivative instrument not designated as hedging instrument and classified as an asset.
    Fact DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue
    Label Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value
    Taxonomy us-gaap
    Unit USD
    Val 1,979,000
  20. Description Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.
    Fact OperatingLeasesFutureMinimumPaymentsDueInFourYears
    Label Operating Leases, Future Minimum Payments, Due in Four Years
    Taxonomy us-gaap
    Unit USD
    Val 28,053,000
  21. Description Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.
    Fact StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
    Label Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest
    Taxonomy us-gaap
    Unit USD
    Val 863,174,000
  22. Description Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.
    Fact PropertyPlantAndEquipmentNet
    Label Property, Plant and Equipment, Net
    Taxonomy us-gaap
    Unit USD
    Val 157,169,000
  23. Description Amount of unrecognized tax benefits.
    Fact UnrecognizedTaxBenefits
    Label Unrecognized Tax Benefits
    Taxonomy us-gaap
    Unit USD
    Val 10,300,000
  24. Description Amount of assets classified as other.
    Fact OtherAssets
    Label Other Assets
    Taxonomy us-gaap
    Unit USD
    Val 246,937,000
  25. Description Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.
    Fact OperatingLeasesFutureMinimumPaymentsDue
    Label Operating Leases, Future Minimum Payments Due
    Taxonomy us-gaap
    Unit USD
    Val 297,595,000
  26. Description Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.
    Fact OperatingLeasesFutureMinimumPaymentsDueInThreeYears
    Label Operating Leases, Future Minimum Payments, Due in Three Years
    Taxonomy us-gaap
    Unit USD
    Val 24,548,000
  27. Description Amount of other payables due to broker-dealers or clearing organizations.
    Fact OtherPayablesToBrokerDealersAndClearingOrganizations
    Label Other Payables to Broker-Dealers and Clearing Organizations
    Taxonomy us-gaap
    Unit USD
    Val 11,956,000
  28. Description Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.
    Fact ContractWithCustomerLiability
    Label Contract with Customer, Liability
    Taxonomy us-gaap
    Unit USD
    Val 12,800,000
  29. Description Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including, but not limited to, disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.
    Fact CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
    Label Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations
    Taxonomy us-gaap
    Unit USD
    Val 416,778,000
  30. Description Amount for accounts payable to related parties.
    Fact AccountsPayableRelatedPartiesCurrentAndNoncurrent
    Label Accounts Payable, Related Parties
    Taxonomy us-gaap
    Unit USD
    Val 40,155,000
  31. Description For an unclassified balance sheet, amounts due from related parties including affiliates, employees, joint ventures, officers and stockholders, immediate families thereof, and pension funds.
    Fact DueFromRelatedParties
    Label Due from Related Parties
    Taxonomy us-gaap
    Unit USD
    Val 7,748,000
  32. Description Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.
    Fact AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
    Label Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment
    Taxonomy us-gaap
    Unit USD
    Val 305,101,000
  33. Description Fair value of financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, elected not to be offset, deducted from derivative liabilities.
    Fact DerivativeLiabilityNotOffsetPolicyElectionDeduction
    Frame CY2018Q4I
    Label Derivative Liability, Not Offset, Policy Election Deduction
    Taxonomy us-gaap
    Unit USD
    Val 0
  34. Description Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any.
    Fact LiabilitiesAndStockholdersEquity
    Label Liabilities and Equity
    Taxonomy us-gaap
    Unit USD
    Val 3,432,757,000
  35. Description The cumulative amount of the reporting entity's undistributed earnings or deficit.
    Fact RetainedEarningsAccumulatedDeficit
    Label Retained Earnings (Accumulated Deficit)
    Taxonomy us-gaap
    Unit USD
    Val -1,105,019,000
  36. Description Fair value of financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, elected not to be offset, deducted from derivative assets.
    Fact DerivativeAssetNotOffsetPolicyElectionDeduction
    Frame CY2018Q4I
    Label Derivative Asset, Not Offset, Policy Election Deduction
    Taxonomy us-gaap
    Unit USD
    Val 0
  37. Description Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.
    Fact NoncurrentAssets
    Label Long-Lived Assets
    Taxonomy us-gaap
    Unit USD
    Val 1,200,069,000
  38. Description This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.
    Fact EquityMethodInvestments
    Label Equity Method Investments
    Taxonomy us-gaap
    Unit USD
    Val 35,200,000
  39. Description Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.
    Fact ShortTermBorrowings
    Frame CY2018Q4I
    Label Short-term Debt
    Taxonomy us-gaap
    Unit USD
    Val 5,162,000
  40. Description Sum of the carrying amounts as of the balance sheet date of all investments.
    Fact Investments
    Label Investments
    Taxonomy us-gaap
    Unit USD
    Val 35,403,000
  41. Description Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.
    Fact OperatingLeasesFutureMinimumPaymentsDueInTwoYears
    Label Operating Leases, Future Minimum Payments, Due in Two Years
    Taxonomy us-gaap
    Unit USD
    Val 25,510,000
  42. Description Value of the investment at close of period. For schedules of investments that are categorized, the value would be aggregated by category. For investment in and advances to affiliates, if operations of any controlled companies are different in character from those of the company, group such affiliates within divisions and by type of activities.
    Fact InvestmentOwnedAtFairValue
    Label Investment Owned, at Fair Value
    Taxonomy us-gaap
    Unit USD
    Val 32,100,000
  43. Description Fair value as of the balance sheet date of all foreign currency derivative liabilities not designated as hedging instruments.
    Fact ForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue
    Label Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Liability at Fair Value
    Taxonomy us-gaap
    Unit USD
    Val 2,072,000
  44. Description The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.
    Fact LongTermDebtFairValue
    Label Long-term Debt, Fair Value
    Taxonomy us-gaap
    Unit USD
    Val 756,195,000
  45. Description Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.
    Fact ContractWithCustomerAssetNet
    Label Contract with Customer, Asset, after Allowance for Credit Loss
    Taxonomy us-gaap
    Unit USD
    Val 516,100,000
  46. Description Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.
    Fact GoodwillAcquiredDuringPeriod
    Label Goodwill, Acquired During Period
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 39,700,000
  47. Description Amount of obligation to return cash collateral under master netting arrangements that have not been offset against derivative assets.
    Fact DerivativeCollateralObligationToReturnCash
    Frame CY2018Q4I
    Label Derivative, Collateral, Obligation to Return Cash
    Taxonomy us-gaap
    Unit USD
    Val 0
  48. Description Fair value as of the balance sheet date of derivative instrument not designated as hedging instrument and classified as a liability.
    Fact DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue
    Label Derivative Instruments Not Designated as Hedging Instruments, Liability, at Fair Value
    Taxonomy us-gaap
    Unit USD
    Val 91,129,000
  49. Description Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.
    Fact CashAndCashEquivalentsAtCarryingValue
    Label Cash and Cash Equivalents, at Carrying Value
    Taxonomy us-gaap
    Unit USD
    Val 336,535,000
  50. Description Amount of right to receive cash and securities on deposit with clearing organizations. Clearing organizations perform post trade processing and trade comparisons among numerous broker-dealers and act as settlement agents between buying and selling broker-dealers.
    Fact ReceivablesFromClearingOrganizations
    Label Receivables from Clearing Organizations
    Taxonomy us-gaap
    Unit USD
    Val 269,549,000
  51. Description Amount receivable as the result of a fail-to-deliver. A fail-to-deliver is a securities sale to another broker-dealer that has not been delivered to buying broker-dealer by the close of business on the settlement date.
    Fact SecuritiesFailedToDeliver
    Label Securities Failed-to-Deliver
    Taxonomy us-gaap
    Unit USD
    Val 660,995,000
  52. Description Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which is directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent (that is, noncontrolling interest, previously referred to as minority interest).
    Fact MinorityInterest
    Label Stockholders' Equity Attributable to Noncontrolling Interest
    Taxonomy us-gaap
    Unit USD
    Val 94,801,000
  53. Description Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.
    Fact DerivativeAssets
    Label Derivative Asset
    Taxonomy us-gaap
    Unit USD
    Val 1,979,000
  54. Description Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.
    Fact IndefiniteLivedIntangibleAssetsExcludingGoodwill
    Label Indefinite-lived Intangible Assets (Excluding Goodwill)
    Taxonomy us-gaap
    Unit USD
    Val 88,933,000
  55. Description Carrying amount of collateralized debt obligations with maturities initially due after one year or beyond the operating cycle, if longer, excluding the current portion. Obligations include, but not limited to, mortgage loans, chattel loans, and other borrowings secured by assets.
    Fact SecuredLongTermDebt
    Label Secured Long-term Debt, Noncurrent
    Taxonomy us-gaap
    Unit USD
    Val 21,031,000
  56. Description Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.
    Fact AssetsFairValueDisclosure
    Label Assets, Fair Value Disclosure
    Taxonomy us-gaap
    Unit USD
    Val 92,451,000
  57. Description For an unclassified balance sheet, the amount of fees and other revenue, excluding investment income receivable, earned but not yet received, which were recognized in conformity with revenue recognition criteria based on estimates or specific contractual terms.
    Fact AccruedFeesAndOtherRevenueReceivable
    Label Accrued Fees and Other Revenue Receivable
    Taxonomy us-gaap
    Unit USD
    Val 516,091,000
  58. Description Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.
    Fact OperatingLeasesFutureMinimumPaymentsDueCurrent
    Label Operating Leases, Future Minimum Payments Due, Next Twelve Months
    Taxonomy us-gaap
    Unit USD
    Val 40,254,000
  59. Description Amount before accumulated amortization of intangible assets, excluding goodwill.
    Fact IntangibleAssetsGrossExcludingGoodwill
    Label Intangible Assets, Gross (Excluding Goodwill)
    Taxonomy us-gaap
    Unit USD
    Val 387,146,000
  60. Description Amount receivable from broker-dealers and clearing organizations, including, but not limited to, securities failed-to-deliver, certain deposits for securities borrowed, open transactions, good faith and margin deposits, commissions and floor brokerage receivables.
    Fact ReceivablesFromBrokersDealersAndClearingOrganizations
    Label Receivables from Brokers-Dealers and Clearing Organizations
    Taxonomy us-gaap
    Unit USD
    Val 941,866,000
  61. Description Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.
    Fact DerivativeFairValueOfDerivativeLiability
    Label Derivative Liability, Fair Value, Gross Liability
    Taxonomy us-gaap
    Unit USD
    Val 631,571,000
  62. Description Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.
    Fact Liabilities
    Label Liabilities
    Taxonomy us-gaap
    Unit USD
    Val 2,544,877,000
  63. Description Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.
    Fact PropertyPlantAndEquipmentGross
    Label Property, Plant and Equipment, Gross
    Taxonomy us-gaap
    Unit USD
    Val 462,270,000
  64. Description Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.
    Fact Assets
    Label Assets
    Taxonomy us-gaap
    Unit USD
    Val 3,432,757,000
  65. Description Fair value, after effects of master netting arrangements, deduction of assets not subject to a master netting arrangement and elected not to be offset, of financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, offset against an obligation to return collateral.
    Fact DerivativeAssetFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection
    Frame CY2018Q4I
    Label Derivative Asset, Fair Value, Offset Against Collateral, Net of Not Subject to Master Netting Arrangement, Policy Election
    Taxonomy us-gaap
    Unit USD
    Val 1,979,000
  66. Description Amount of cash subject to withdrawal restrictions, restricted deposits held as compensating balances, and cash and securities segregated in compliance with regulations (such as cash deposited in a special reserve account for the exclusive benefit of customers).
    Fact CashAndSecuritiesSegregatedUnderFederalAndOtherRegulations
    Label Cash and Securities Segregated under Federal and Other Regulations
    Taxonomy us-gaap
    Unit USD
    Val 80,243,000
  67. Description Amount of other receivables due from broker-dealers or clearing organizations.
    Fact OtherReceivablesFromBrokerDealersAndClearingOrganizations
    Label Other Receivables from Broker-Dealers and Clearing Organizations
    Taxonomy us-gaap
    Unit USD
    Val 7,561,000
  68. Description Fair value portion of asset contracts related to the exchange of different currencies, including, but not limited to, foreign currency options, forward contracts, and swaps.
    Fact ForeignCurrencyContractAssetFairValueDisclosure
    Label Foreign Currency Contract, Asset, Fair Value Disclosure
    Taxonomy us-gaap
    Unit USD
    Val 1,611,000
  69. Description The amount allocated to treasury stock. Treasury stock is common and preferred shares of an entity that were issued, repurchased by the entity, and are held in its treasury.
    Fact TreasuryStockValue
    Label Treasury Stock, Value
    Taxonomy us-gaap
    Unit USD
    Val 314,240,000
  70. Description Amount payable as the result of fail-to-receive. A fail-to-receive is a securities purchase from another broker-dealer not received from the selling broker-dealer by the close of business on the settlement date.
    Fact SecuritiesFailedToReceive
    Label Securities Failed-to-Receive
    Taxonomy us-gaap
    Unit USD
    Val 636,705,000
  71. Description Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.
    Fact OperatingLeasesFutureMinimumPaymentsDueInFiveYears
    Label Operating Leases, Future Minimum Payments, Due in Five Years
    Taxonomy us-gaap
    Unit USD
    Val 26,346,000
  72. Description Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).
    Fact EquitySecuritiesFvNi
    Label Equity Securities, FV-NI
    Taxonomy us-gaap
    Unit USD
    Val 32,064,000
  73. Description Amount payable to broker-dealers and clearing organizations, including, but not limited to, securities failed-to-receive, certain deposits received for securities loaned, open transactions, and floor-brokerage payables.
    Fact PayablesToBrokerDealersAndClearingOrganizations
    Frame CY2018Q4I
    Label Payables to Broker-Dealers and Clearing Organizations
    Taxonomy us-gaap
    Unit USD
    Val 769,833,000
  74. Description The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.
    Fact ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
    Label Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number
    Taxonomy us-gaap
    Unit shares
    Val 300,000
  75. Description Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits.
    Fact EmployeeRelatedLiabilitiesCurrentAndNoncurrent
    Label Employee-related Liabilities
    Taxonomy us-gaap
    Unit USD
    Val 195,234,000
  76. Description Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.
    Fact LongTermDebtNoncurrent
    Label Long-term Debt, Excluding Current Maturities
    Taxonomy us-gaap
    Unit USD
    Val 763,548,000
  77. Description Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.
    Fact LongTermDebt
    Label Long-term Debt
    Taxonomy us-gaap
    Unit USD
    Val 742,517,000
  78. Description Fair value of liability associated with financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.
    Fact DerivativeAssetFairValueGrossLiability
    Label Derivative Asset, Fair Value, Gross Liability
    Taxonomy us-gaap
    Unit USD
    Val 540,442,000
  79. Description Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.
    Fact StockholdersEquity
    Label Stockholders' Equity Attributable to Parent
    Taxonomy us-gaap
    Unit USD
    Val 768,373,000
  80. Description Amount, after the effects of master netting arrangements, of securities loaned to entities in exchange for collateral. Includes liabilities not subject to a master netting arrangement and not elected to be offset.
    Fact SecuritiesLoaned
    Label Securities Loaned
    Taxonomy us-gaap
    Unit USD
    Val 15,140,000
  81. Description Amount of liability recognized arising from contingent consideration in a business combination, expected to be settled beyond one year or the normal operating cycle, if longer.
    Fact BusinessCombinationContingentConsiderationLiabilityNoncurrent
    Label Business Combination, Contingent Consideration, Liability, Noncurrent
    Taxonomy us-gaap
    Unit USD
    Val 18,000,000
  82. Description Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.
    Fact FiniteLivedIntangibleAssetsGross
    Label Finite-Lived Intangible Assets, Gross
    Taxonomy us-gaap
    Unit USD
    Val 298,213,000
  83. Description Fair value, after effects of master netting arrangements, deduction of liabilities not subject to a master netting arrangement and elected not to be offset, of financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, offset against the right to receive collateral.
    Fact DerivativeLiabilityFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection
    Frame CY2018Q4I
    Label Derivative Liability, Fair Value, Offset Against Collateral, Net of Not Subject to Master Netting Arrangement, Policy Election
    Taxonomy us-gaap
    Unit USD
    Val 91,129,000
  84. Description Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.
    Fact DerivativeLiabilities
    Label Derivative Liability
    Taxonomy us-gaap
    Unit USD
    Val 91,129,000
  85. Description Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.
    Fact AccumulatedOtherComprehensiveIncomeLossNetOfTax
    Label Accumulated Other Comprehensive Income (Loss), Net of Tax
    Taxonomy us-gaap
    Unit USD
    Val -24,465,000
  86. Description Amount payable to broker-dealers or clearing organizations for executing or clearing trades or orders.
    Fact CommissionsPayableToBrokerDealersAndClearingOrganizations
    Label Commissions Payable to Broker-Dealers and Clearing Organizations
    Taxonomy us-gaap
    Unit USD
    Val 30,043,000
  87. Description Amount of interest expense accrued for an underpayment of income taxes.
    Fact UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued
    Label Unrecognized Tax Benefits, Interest on Income Taxes Accrued
    Taxonomy us-gaap
    Unit USD
    Val 3,300,000
  88. Description Amount of right to receive cash collateral under master netting arrangements that have not been offset against derivative liabilities.
    Fact DerivativeCollateralRightToReclaimCash
    Frame CY2018Q4I
    Label Derivative, Collateral, Right to Reclaim Cash
    Taxonomy us-gaap
    Unit USD
    Val 0
  89. Description For an unclassified balance sheet, amounts due from an Entity employee, not to include stockholders or officers.
    Fact DueFromEmployees
    Frame CY2018Q4I
    Label Due from Employees
    Taxonomy us-gaap
    Unit USD
    Val 216,868,000
  90. Description Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.
    Fact IntangibleAssetsNetExcludingGoodwill
    Label Intangible Assets, Net (Excluding Goodwill)
    Taxonomy us-gaap
    Unit USD
    Val 298,779,000
  91. Description Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.
    Fact FiniteLivedIntangibleAssetsAccumulatedAmortization
    Label Finite-Lived Intangible Assets, Accumulated Amortization
    Taxonomy us-gaap
    Unit USD
    Val 88,367,000
  92. Description Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.
    Fact DerivativeNotionalAmount
    Frame CY2018Q4I
    Label Derivative, Notional Amount
    Taxonomy invest
    Unit USD
    Val 18,374,656,000

Facts up to 2018-11-30

Description Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.
Fact NumberOfReportableSegments
Label Number of Reportable Segments
Start 2018-01-01
Taxonomy us-gaap
Unit Segment
Val 2

Facts up to 2018-06-30

  1. Description The cash inflow from the additional capital contribution to the entity.
    Fact ProceedsFromIssuanceOfCommonStock
    Label Proceeds from Issuance of Common Stock
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 324,177,000
  2. Description Decrease in noncontrolling interest (for example, but not limited to, redeeming or purchasing the interests of noncontrolling shareholders, issuance of shares (interests) by the non-wholly owned subsidiary to the parent entity for other than cash, and a buyback of shares (interest) by the non-wholly owned subsidiary from the noncontrolling interests).
    Fact MinorityInterestDecreaseFromRedemptions
    Label Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 622,000
  3. Description Decrease in noncontrolling interest (for example, but not limited to, redeeming or purchasing the interests of noncontrolling shareholders, issuance of shares (interests) by the non-wholly owned subsidiary to the parent entity for other than cash, and a buyback of shares (interest) by the non-wholly owned subsidiary from the noncontrolling interests).
    Fact MinorityInterestDecreaseFromRedemptions
    Frame CY2018Q2
    Label Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 793,000
  4. Description Amount of income (expense) related to nonoperating activities, classified as other.
    Fact OtherNonoperatingIncomeExpense
    Label Other Nonoperating Income (Expense)
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 32,892,000
  5. Description Amount of income (expense) related to nonoperating activities, classified as other.
    Fact OtherNonoperatingIncomeExpense
    Frame CY2018Q2
    Label Other Nonoperating Income (Expense)
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 1,481,000
  6. Description Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.
    Fact IncomeTaxExpenseBenefit
    Label Income Tax Expense (Benefit)
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 36,121,000
  7. Description Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.
    Fact IncomeTaxExpenseBenefit
    Frame CY2018Q2
    Label Income Tax Expense (Benefit)
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 14,571,000
  8. Description Amount of realized and unrealized gain (loss) resulting from the difference between acquisition price and selling price or fair value of trading assets and trading liabilities, and from the firm's direct investment activity, conducted separately from customer trading activities, including, but not limited to, investments in private equity, alternative investment products, real estate, and exchanges and memberships.
    Fact PrincipalTransactionsRevenue
    Label Principal Transactions Revenue, Net
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 176,906,000
  9. Description Amount of realized and unrealized gain (loss) resulting from the difference between acquisition price and selling price or fair value of trading assets and trading liabilities, and from the firm's direct investment activity, conducted separately from customer trading activities, including, but not limited to, investments in private equity, alternative investment products, real estate, and exchanges and memberships.
    Fact PrincipalTransactionsRevenue
    Frame CY2018Q2
    Label Principal Transactions Revenue, Net
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 84,988,000
  10. Description Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities, and addition from assumption of issuance of common shares for dilutive potential common shares; of income (loss) from continuing operations available to common shareholders.
    Fact NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersDiluted
    Label Net Income (Loss) from Continuing Operations Available to Common Shareholders, Diluted
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 87,517,000
  11. Description Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities, and addition from assumption of issuance of common shares for dilutive potential common shares; of income (loss) from continuing operations available to common shareholders.
    Fact NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersDiluted
    Frame CY2018Q2
    Label Net Income (Loss) from Continuing Operations Available to Common Shareholders, Diluted
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 20,001,000
  12. Description Amount of cash inflow (outflow) of investing activities of discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.
    Fact CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations
    Label Cash Provided by (Used in) Investing Activities, Discontinued Operations
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 17,388,000
  13. Description The amount of expense during the period for floor brokerage fees paid to other broker-dealers to execute trades on their behalf, stock exchange fees, order flow fees, and clearance fees.
    Fact FloorBrokerageExchangeAndClearanceFees
    Label Floor Brokerage, Exchange and Clearance Fees
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 29,260,000
  14. Description The amount of expense during the period for floor brokerage fees paid to other broker-dealers to execute trades on their behalf, stock exchange fees, order flow fees, and clearance fees.
    Fact FloorBrokerageExchangeAndClearanceFees
    Frame CY2018Q2
    Label Floor Brokerage, Exchange and Clearance Fees
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 15,345,000
  15. Description Amount of cash inflow (outflow) of financing activities of discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.
    Fact CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations
    Label Cash Provided by (Used in) Financing Activities, Discontinued Operations
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val -543,376,000
  16. Description Carrying amount, attributable to parent and noncontrolling interests, of an entity's issued and outstanding stock which is not included within permanent equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. Includes stock with a put option held by an ESOP and stock redeemable by a holder only in the event of a change in control of the issuer.
    Fact TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests
    Frame CY2018Q2I
    Label Temporary Equity, Carrying Amount, Including Portion Attributable to Noncontrolling Interests
    Taxonomy us-gaap
    Unit USD
    Val 47,116,000
  17. Description Amount of unrealized and realized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).
    Fact EquitySecuritiesFvNiGainLoss
    Label Equity Securities, FV-NI, Gain (Loss)
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 13,800,000
  18. Description Amount of unrealized and realized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).
    Fact EquitySecuritiesFvNiGainLoss
    Frame CY2018Q2
    Label Equity Securities, FV-NI, Gain (Loss)
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 4,600,000
  19. Description Amount after tax and reclassification adjustments of other comprehensive income (loss).
    Fact OtherComprehensiveIncomeLossNetOfTax
    Label Other Comprehensive Income (Loss), Net of Tax
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val -8,377,000
  20. Description Amount after tax and reclassification adjustments of other comprehensive income (loss).
    Fact OtherComprehensiveIncomeLossNetOfTax
    Frame CY2018Q2
    Label Other Comprehensive Income (Loss), Net of Tax
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val -13,034,000
  21. Description Decrease in noncontrolling interest balance from payment of dividends or other distributions by the non-wholly owned subsidiary or partially owned entity, included in the consolidation of the parent entity, to the noncontrolling interest holders.
    Fact MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
    Label Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 126,127,000
  22. Description Decrease in noncontrolling interest balance from payment of dividends or other distributions by the non-wholly owned subsidiary or partially owned entity, included in the consolidation of the parent entity, to the noncontrolling interest holders.
    Fact MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
    Frame CY2018Q2
    Label Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 74,902,000
  23. Description The amount of expense incurred in the period for communication, which is the exchange of information by several methods.
    Fact Communication
    Label Communication
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 62,128,000
  24. Description The amount of expense incurred in the period for communication, which is the exchange of information by several methods.
    Fact Communication
    Frame CY2018Q2
    Label Communication
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 30,729,000
  25. Description Amount of cash inflow (outflow) from long-term debt by a related party. Related parties, include, but are not limited to, affiliates, owners or officers and their immediate families, and pension trusts.
    Fact ProceedsFromRepaymentsOfRelatedPartyDebt
    Label Proceeds from (Repayments of) Related Party Debt
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 130,000,000
  26. Description Amount after tax of income (loss) from continuing operations attributable to the noncontrolling interest.
    Fact IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity
    Label Income (Loss) from Continuing Operations, Net of Tax, Attributable to Noncontrolling Interest
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 41,032,000
  27. Description Amount after tax of income (loss) from continuing operations attributable to the noncontrolling interest.
    Fact IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity
    Frame CY2018Q2
    Label Income (Loss) from Continuing Operations, Net of Tax, Attributable to Noncontrolling Interest
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 12,358,000
  28. Description Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.
    Fact RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
    Label Related Party Transaction, Expenses from Transactions with Related Party
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 9,933,000
  29. Description Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.
    Fact RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
    Frame CY2018Q2
    Label Related Party Transaction, Expenses from Transactions with Related Party
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 5,882,000
  30. Description Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.
    Fact RevenueFromContractWithCustomerExcludingAssessedTax
    Label Revenue from Contract with Customer, Excluding Assessed Tax
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 829,046,000
  31. Description Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.
    Fact RevenueFromContractWithCustomerExcludingAssessedTax
    Frame CY2018Q2
    Label Revenue from Contract with Customer, Excluding Assessed Tax
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 399,791,000
  32. Description Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.
    Fact DeferredIncomeTaxExpenseBenefit
    Label Deferred Income Tax Expense (Benefit)
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 2,748,000
  33. Description Amount of cash outflow to a noncontrolling interest. Includes, but not limited to, reduction of noncontrolling interest ownership. Excludes dividends paid to the noncontrolling interest.
    Fact PaymentsToMinorityShareholders
    Label Payments to Noncontrolling Interests
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 71,661,000
  34. Description Aggregate cash proceeds received from a combination of transactions that are classified as investing activities in which assets, which may include one or more investments, are sold to third-party buyers. This element can be used by entities to aggregate proceeds from all asset sales that are classified as investing activities.
    Fact ProceedsFromSalesOfAssetsInvestingActivities
    Label Proceeds from Sales of Assets, Investing Activities
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 95,406,000
  35. Description Other cash or noncash adjustments to reconcile net income to cash provided by (used in) operating activities that are not separately disclosed in the statement of cash flows (for example, cash received or cash paid during the current period for miscellaneous operating activities, net change during the reporting period in other assets or other liabilities).
    Fact OtherOperatingActivitiesCashFlowStatement
    Label Other Operating Activities, Cash Flow Statement
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val -851,000
  36. Description The cash outflow associated with the development, modification or acquisition of software programs or applications for internal use (that is, not to be sold, leased or otherwise marketed to others) that qualify for capitalization.
    Fact PaymentsForSoftware
    Label Payments for Software
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 18,940,000
  37. Description Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders.
    Fact NetIncomeLossAvailableToCommonStockholdersBasic
    Label Net Income (Loss) Available to Common Stockholders, Basic
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 93,813,000
  38. Description Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders.
    Fact NetIncomeLossAvailableToCommonStockholdersBasic
    Frame CY2018Q2
    Label Net Income (Loss) Available to Common Stockholders, Basic
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 35,039,000
  39. Description Amount of increase in noncontrolling interest from sale of a portion of the parent's controlling interest.
    Fact NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest
    Label Noncontrolling Interest, Increase from Sale of Parent Equity Interest
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 130,997,000
  40. Description Amount of increase in noncontrolling interest from sale of a portion of the parent's controlling interest.
    Fact NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest
    Frame CY2018Q2
    Label Noncontrolling Interest, Increase from Sale of Parent Equity Interest
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 77,064,000
  41. Description Amount after tax of income (loss) from a discontinued operation including the portion attributable to the noncontrolling interest. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.
    Fact IncomeLossFromDiscontinuedOperationsNetOfTax
    Label Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 42,390,000
  42. Description Amount after tax of income (loss) from a discontinued operation including the portion attributable to the noncontrolling interest. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.
    Fact IncomeLossFromDiscontinuedOperationsNetOfTax
    Frame CY2018Q2
    Label Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 17,631,000
  43. Description The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.
    Fact PaymentsToAcquirePropertyPlantAndEquipment
    Label Payments to Acquire Property, Plant, and Equipment
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 13,817,000
  44. Description The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.
    Fact ProfitLoss
    Label Net Income (Loss), Including Portion Attributable to Noncontrolling Interest
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 147,421,000
  45. Description The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.
    Fact ProfitLoss
    Frame CY2018Q2
    Label Net Income (Loss), Including Portion Attributable to Noncontrolling Interest
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 49,990,000
  46. Description The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.
    Fact AmortizationOfIntangibleAssets
    Label Amortization of Intangible Assets
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 13,500,000
  47. Description The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.
    Fact AmortizationOfIntangibleAssets
    Frame CY2018Q2
    Label Amortization of Intangible Assets
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 6,300,000
  48. Description Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.
    Fact ComprehensiveIncomeNetOfTax
    Label Comprehensive Income (Loss), Net of Tax, Attributable to Parent
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 87,382,000
  49. Description Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.
    Fact ComprehensiveIncomeNetOfTax
    Frame CY2018Q2
    Label Comprehensive Income (Loss), Net of Tax, Attributable to Parent
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 24,583,000
  50. Description Value of stock issued pursuant to acquisitions during the period.
    Fact StockIssuedDuringPeriodValueAcquisitions
    Frame CY2018Q2
    Label Stock Issued During Period, Value, Acquisitions
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 1,454,000
  51. Description The increase (decrease) during the reporting period in the liability arising from securities loaned transactions.
    Fact IncreaseDecreaseInSecuritiesLoanedTransactions
    Label Increase (Decrease) in Securities Loaned Transactions
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val -76,343,000
  52. Description The cash inflow associated with the sale of equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.
    Fact ProceedsFromSaleOfEquityMethodInvestments
    Label Proceeds from Sale of Equity Method Investments
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 2,706,000
  53. Description Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.
    Fact StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
    Label Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest
    Taxonomy us-gaap
    Unit USD
    Val 1,667,354,000
  54. Description The cash outflow during the period for redemption of redeemable noncontrolling interests.
    Fact PaymentsForRepurchaseOfRedeemableNoncontrollingInterest
    Label Payments for Repurchase of Redeemable Noncontrolling Interest
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 6,847,000
  55. Description Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.
    Fact DerivativeGainLossOnDerivativeNet
    Label Derivative, Gain (Loss) on Derivative, Net
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 25,936,000
  56. Description Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.
    Fact DerivativeGainLossOnDerivativeNet
    Frame CY2018Q2
    Label Derivative, Gain (Loss) on Derivative, Net
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 14,663,000
  57. Description The net cash inflow or outflow in aggregate debt due to repayments and proceeds from additional borrowings.
    Fact ProceedsFromRepaymentsOfDebt
    Label Proceeds from (Repayments of) Debt
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 70,000,000
  58. Description Aggregate dividends declared during the period for each share of common stock outstanding.
    Fact CommonStockDividendsPerShareDeclared
    Label Common Stock, Dividends, Per Share, Declared
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 0.36
  59. Description Aggregate dividends declared during the period for each share of common stock outstanding.
    Fact CommonStockDividendsPerShareDeclared
    Frame CY2018Q2
    Label Common Stock, Dividends, Per Share, Declared
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 0.18
  60. Description This element represents movements included in the statement of changes in stockholders' equity which are not separately disclosed or provided for elsewhere in the taxonomy.
    Fact StockholdersEquityOther
    Label Stockholders' Equity, Other
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,000
  61. Description This element represents movements included in the statement of changes in stockholders' equity which are not separately disclosed or provided for elsewhere in the taxonomy.
    Fact StockholdersEquityOther
    Frame CY2018Q2
    Label Stockholders' Equity, Other
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val -7,000
  62. Description Amount of cash outflow to satisfy grantee's tax withholding obligation for award under share-based payment arrangement.
    Fact PaymentsRelatedToTaxWithholdingForShareBasedCompensation
    Label Payment, Tax Withholding, Share-based Payment Arrangement
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 647,000
  63. Description Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.
    Fact OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax
    Label Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val -8,377,000
  64. Description Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.
    Fact OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax
    Frame CY2018Q2
    Label Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val -13,034,000
  65. Description The increase (decrease) during the reporting period in other obligations or expenses incurred but not yet paid.
    Fact IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities
    Label Increase (Decrease) in Other Accounts Payable and Accrued Liabilities
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val -2,810,000
  66. Description The increase (decrease) during the reporting period in the total amount due to the entity related to activities and operations with other broker dealers, and clearing organizations, including deposits.
    Fact IncreaseDecreaseInBrokerageReceivables
    Label Increase (Decrease) in Receivables from Brokers-Dealers and Clearing Organizations
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 945,086,000
  67. Description Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.
    Fact InterestPaidNet
    Label Interest Paid, Excluding Capitalized Interest, Operating Activities
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 19,791,000
  68. Description The increase (decrease) during the reporting period in receivables to be collected from an entity that is controlling, under the control of, or within the same control group as the reporting entity by means of direct or indirect ownership.
    Fact IncreaseDecreaseDueFromAffiliates
    Label Increase (Decrease) Due from Affiliates
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 218,096,000
  69. Description Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.
    Fact AssetImpairmentCharges
    Label Asset Impairment Charges
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,835,000
  70. Description Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.
    Fact IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
    Label Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 141,152,000
  71. Description Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.
    Fact IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
    Frame CY2018Q2
    Label Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 46,930,000
  72. Description Amount of commission revenue from buying and selling securities on behalf of customers.
    Fact BrokerageCommissionsRevenue
    Label Brokerage Commissions Revenue
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 786,344,000
  73. Description Amount of commission revenue from buying and selling securities on behalf of customers.
    Fact BrokerageCommissionsRevenue
    Frame CY2018Q2
    Label Brokerage Commissions Revenue
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 378,487,000
  74. Description Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.
    Fact AmortizationOfDebtDiscountPremium
    Label Amortization of Debt Discount (Premium)
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val -1,797,000
  75. Description Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including, but not limited to, disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.
    Fact CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
    Frame CY2018Q2I
    Label Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations
    Taxonomy us-gaap
    Unit USD
    Val 446,760,000
  76. Description The compensation expense recognized during the period pertaining to the deferred compensation arrangement.
    Fact DeferredCompensationArrangementWithIndividualCompensationExpense
    Label Deferred Compensation Arrangement with Individual, Compensation Expense
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 2,292,000
  77. Description Amount of cash outflow for purchase of marketable security.
    Fact PaymentsToAcquireMarketableSecurities
    Label Payments to Acquire Marketable Securities
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  78. Description A fee charged for services from professionals such as doctors, lawyers and accountants. The term is often expanded to include other professions, for example, pharmacists charging to maintain a medicinal profile of a client or customer.
    Fact ProfessionalFees
    Label Professional Fees
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 37,909,000
  79. Description A fee charged for services from professionals such as doctors, lawyers and accountants. The term is often expanded to include other professions, for example, pharmacists charging to maintain a medicinal profile of a client or customer.
    Fact ProfessionalFees
    Frame CY2018Q2
    Label Professional Fees
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 20,001,000
  80. Description Aggregate dividends paid during the period for each share of common stock outstanding.
    Fact CommonStockDividendsPerShareCashPaid
    Label Common Stock, Dividends, Per Share, Cash Paid
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 0.36
  81. Description Aggregate dividends paid during the period for each share of common stock outstanding.
    Fact CommonStockDividendsPerShareCashPaid
    Frame CY2018Q2
    Label Common Stock, Dividends, Per Share, Cash Paid
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 0.18
  82. Description Amount of increase (decrease) in temporary equity from changes classified as other.
    Fact TemporaryEquityOtherChanges
    Label Temporary Equity, Other Changes
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 2,000
  83. Description The cash outflow associated with the purchase of all investments (debt, security, other) during the period.
    Fact PaymentsToAcquireInvestments
    Label Payments to Acquire Investments
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 642,000
  84. Description Amount of paid and unpaid common stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK).
    Fact DividendsCommonStock
    Label Dividends, Common Stock
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 115,232,000
  85. Description Amount of paid and unpaid common stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK).
    Fact DividendsCommonStock
    Frame CY2018Q2
    Label Dividends, Common Stock
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 59,656,000
  86. Description Cost of labor directly related to good produced and service rendered. Includes, but is not limited to, payroll cost and equity-based compensation.
    Fact CostDirectLabor
    Label Cost, Direct Labor
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 530,097,000
  87. Description Cost of labor directly related to good produced and service rendered. Includes, but is not limited to, payroll cost and equity-based compensation.
    Fact CostDirectLabor
    Frame CY2018Q2
    Label Cost, Direct Labor
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 252,250,000
  88. Description Amount of increase (decrease) from effect of exchange rate changes on cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; held in foreign currencies; including, but not limited to, disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.
    Fact EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
    Label Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val -8,015,000
  89. Description The increase (decrease) during the period in accrued salaries.
    Fact IncreaseDecreaseInAccruedSalaries
    Label Increase (Decrease) in Accrued Salaries
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val -2,289,000
  90. Description Amount of revenue and income classified as other.
    Fact OtherIncome
    Label Other Income
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 2,250,000
  91. Description Amount of revenue and income classified as other.
    Fact OtherIncome
    Frame CY2018Q2
    Label Other Income
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 1,324,000
  92. Description Amount of cash inflow (outflow) of investing activities, excluding discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.
    Fact NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
    Label Net Cash Provided by (Used in) Investing Activities, Continuing Operations
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 62,979,000
  93. Description Amount of gain (loss) included in earnings for investments classified as other.
    Fact GainLossOnSaleOfOtherInvestments
    Label Gain (Loss) on Sale of Other Investments
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 20,565,000
  94. Description Value, after forfeiture, of shares granted under share-based payment arrangement. Excludes employee stock ownership plan (ESOP).
    Fact StockGrantedDuringPeriodValueSharebasedCompensation
    Label Shares Granted, Value, Share-based Payment Arrangement, after Forfeiture
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 2,308,000
  95. Description Value, after forfeiture, of shares granted under share-based payment arrangement. Excludes employee stock ownership plan (ESOP).
    Fact StockGrantedDuringPeriodValueSharebasedCompensation
    Frame CY2018Q2
    Label Shares Granted, Value, Share-based Payment Arrangement, after Forfeiture
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 1,016,000
  96. Description Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. Excludes changes in equity resulting from investments by owners and distributions to owners.
    Fact ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
    Label Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 139,044,000
  97. Description Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. Excludes changes in equity resulting from investments by owners and distributions to owners.
    Fact ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
    Frame CY2018Q2
    Label Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 36,956,000
  98. Description The increase (decrease) during the reporting period in the amount due from customers for the credit sale of goods and services; includes accounts receivable and other types of receivables.
    Fact IncreaseDecreaseInAccountsAndOtherReceivables
    Label Increase (Decrease) in Accounts and Other Receivables
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 84,797,000
  99. Description Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.
    Fact PaymentsOfDividendsCommonStock
    Label Payments of Ordinary Dividends, Common Stock
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 105,003,000
  100. Description The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value.
    Fact ImpairmentOfIntangibleAssetsExcludingGoodwill
    Label Impairment of Intangible Assets (Excluding Goodwill)
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  101. Description The increase (decrease) during the reporting period in the obligations due for goods and services provided by the following types of related parties: a parent company and its subsidiaries, subsidiaries of a common parent, an entity and trust for the benefit of employees, such as pension and profit-sharing trusts that are managed by or under the trusteeship of the entities' management, an entity and its principal owners, management, or member of their immediate families, affiliates, or other parties with the ability to exert significant influence.
    Fact IncreaseDecreaseInAccountsPayableRelatedParties
    Label Increase (Decrease) in Accounts Payable, Related Parties
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 4,992,000
  102. Description The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income.
    Fact IncomeTaxesPaid
    Label Income Taxes Paid
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 24,152,000
  103. Description Amount of cash inflow (outflow) of operating activities of discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.
    Fact CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations
    Label Cash Provided by (Used in) Operating Activities, Discontinued Operations
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 122,484,000
  104. Description Amount of equity impact of cash distribution declared to unit-holder of limited partnership (LP).
    Fact DistributionMadeToLimitedPartnerCashDistributionsDeclared
    Label Distribution Made to Limited Partner, Cash Distributions Declared
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 11,900,000
  105. Description Amount of equity impact of cash distribution declared to unit-holder of limited partnership (LP).
    Fact DistributionMadeToLimitedPartnerCashDistributionsDeclared
    Frame CY2018Q2
    Label Distribution Made to Limited Partner, Cash Distributions Declared
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 8,100,000
  106. Description The increase (decrease) during the reporting period in the aggregate amount of obligations incurred arising from transactions with broker-dealers, such as amounts due on margin and unsettled cash transactions; includes payables to brokers, dealers and clearing organizations.
    Fact IncreaseDecreaseInPayablesToBrokerDealers
    Label Increase (Decrease) in Payables to Broker-Dealers and Clearing Organizations
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 898,031,000
  107. Description Amount of the cost of borrowed funds accounted for as interest expense.
    Fact InterestExpense
    Label Interest Expense
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 19,396,000
  108. Description Amount of the cost of borrowed funds accounted for as interest expense.
    Fact InterestExpense
    Frame CY2018Q2
    Label Interest Expense
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 10,028,000
  109. Description Amount of cash inflow (outflow) of financing activities, excluding discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.
    Fact NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
    Label Net Cash Provided by (Used in) Financing Activities, Continuing Operations
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 315,150,000
  110. Description Number of shares that have been repurchased during the period and are being held in treasury.
    Fact TreasuryStockSharesAcquired
    Label Treasury Stock, Shares, Acquired
    Start 2018-01-01
    Taxonomy us-gaap
    Unit shares
    Val 726,539
  111. Description Number of shares that have been repurchased during the period and are being held in treasury.
    Fact TreasuryStockSharesAcquired
    Frame CY2018Q2
    Label Treasury Stock, Shares, Acquired
    Start 2018-04-01
    Taxonomy us-gaap
    Unit shares
    Val 726,539
  112. Description The cash outflow to repay long-term debt that is wholly or partially secured by collateral. Excludes repayments of tax exempt secured debt.
    Fact RepaymentsOfSecuredDebt
    Label Repayments of Secured Debt
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 7,234,000
  113. Description Amount of impairment loss from capitalized computer software costs.
    Fact CapitalizedComputerSoftwareImpairments1
    Label Capitalized Computer Software, Impairments
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  114. Description Amount of impairment loss from capitalized computer software costs.
    Fact CapitalizedComputerSoftwareImpairments1
    Frame CY2018Q2
    Label Capitalized Computer Software, Impairments
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  115. Description Per basic share amount, after tax, of income (loss) from the day-to-day business activities of the discontinued operation and gain (loss) from the disposal of the discontinued operation.
    Fact IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare
    Label Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 0.1
  116. Description Per basic share amount, after tax, of income (loss) from the day-to-day business activities of the discontinued operation and gain (loss) from the disposal of the discontinued operation.
    Fact IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare
    Frame CY2018Q2
    Label Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 0.05
  117. Description Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.
    Fact WeightedAverageNumberOfSharesOutstandingBasic
    Label Weighted Average Number of Shares Outstanding, Basic
    Start 2018-01-01
    Taxonomy us-gaap
    Unit shares
    Val 314,501,000
  118. Description Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.
    Fact WeightedAverageNumberOfSharesOutstandingBasic
    Frame CY2018Q2
    Label Weighted Average Number of Shares Outstanding, Basic
    Start 2018-04-01
    Taxonomy us-gaap
    Unit shares
    Val 321,199,000
  119. Description Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.
    Fact OperatingExpenses
    Label Operating Expenses
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 911,192,000
  120. Description Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.
    Fact OperatingExpenses
    Frame CY2018Q2
    Label Operating Expenses
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 446,605,000
  121. Description The increase (decrease) during the reporting period in the liability under agreements to repurchase securities that were sold.
    Fact IncreaseDecreaseInPayablesUnderRepurchaseAgreements
    Label Increase (Decrease) in Payables under Repurchase Agreements
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 3,108,000
  122. Description Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) from discontinued operations available to common shareholders.
    Fact NetIncomeLossFromDiscontinuedOperationsAvailableToCommonShareholdersBasic
    Label Net Income (Loss) from Discontinued Operations Available to Common Shareholders, Basic
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 29,814,000
  123. Description Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) from discontinued operations available to common shareholders.
    Fact NetIncomeLossFromDiscontinuedOperationsAvailableToCommonShareholdersBasic
    Frame CY2018Q2
    Label Net Income (Loss) from Discontinued Operations Available to Common Shareholders, Basic
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 15,038,000
  124. Description The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.
    Fact EarningsPerShareBasic
    Label Earnings Per Share, Basic
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 0.3
  125. Description The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.
    Fact EarningsPerShareBasic
    Frame CY2018Q2
    Label Earnings Per Share, Basic
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 0.11
  126. Description The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.
    Fact NetIncomeLoss
    Label Net Income (Loss) Attributable to Parent
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 93,977,000
  127. Description The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.
    Fact NetIncomeLoss
    Frame CY2018Q2
    Label Net Income (Loss) Attributable to Parent
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 35,203,000
  128. Description Amount of expense classified as other.
    Fact OtherExpenses
    Label Other Expenses
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 31,886,000
  129. Description Amount of expense classified as other.
    Fact OtherExpenses
    Frame CY2018Q2
    Label Other Expenses
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 14,548,000
  130. Description The total expense recognized in the period for promotion, public relations, and brand or product advertising.
    Fact MarketingAndAdvertisingExpense
    Label Marketing and Advertising Expense
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 34,080,000
  131. Description The total expense recognized in the period for promotion, public relations, and brand or product advertising.
    Fact MarketingAndAdvertisingExpense
    Frame CY2018Q2
    Label Marketing and Advertising Expense
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 17,855,000
  132. Description The cash outflow to reacquire common stock during the period.
    Fact PaymentsForRepurchaseOfCommonStock
    Label Payments for Repurchase of Common Stock
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 9,711,000
  133. Description The increase (decrease) during the reporting period in the aggregate value of financial instruments used in operating activities, including trading securities, risk management instruments, and other short-term trading instruments.
    Fact IncreaseDecreaseInFinancialInstrumentsUsedInOperatingActivities
    Label Increase (Decrease) in Financial Instruments Used in Operating Activities
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 24,407,000
  134. Description Amount of unrealized gain (loss) on investment in marketable security.
    Fact MarketableSecuritiesUnrealizedGainLoss
    Label Marketable Securities, Unrealized Gain (Loss)
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 4,275,000
  135. Description Amount of operating interest income, including, but not limited to, amortization and accretion of premiums and discounts on securities.
    Fact InterestIncomeOperating
    Label Interest Income, Operating
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 7,615,000
  136. Description Amount of operating interest income, including, but not limited to, amortization and accretion of premiums and discounts on securities.
    Fact InterestIncomeOperating
    Frame CY2018Q2
    Label Interest Income, Operating
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 4,940,000
  137. Description Amount after tax of income (loss) from continuing operations including portion attributable to the noncontrolling interest.
    Fact IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
    Label Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 105,031,000
  138. Description Amount after tax of income (loss) from continuing operations including portion attributable to the noncontrolling interest.
    Fact IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
    Frame CY2018Q2
    Label Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 32,359,000
  139. Description Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.
    Fact ContractWithCustomerLiabilityRevenueRecognized
    Label Contract with Customer, Liability, Revenue Recognized
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 14,700,000
  140. Description Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.
    Fact ContractWithCustomerLiabilityRevenueRecognized
    Frame CY2018Q2
    Label Contract with Customer, Liability, Revenue Recognized
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 7,200,000
  141. Description Amount of increase (decrease) in cash, cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including effect from exchange rate change. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.
    Fact CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
    Label Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val -350,030,000
  142. Description Amount of cash outflow, not made soon after acquisition date of business combination, to settle contingent consideration liability up to amount recognized at acquisition date, including, but not limited to, measurement period adjustment and less amount paid soon after acquisition date.
    Fact PaymentForContingentConsiderationLiabilityFinancingActivities
    Label Payment for Contingent Consideration Liability, Financing Activities
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 7,924,000
  143. Description Number of shares related to Restricted Stock Award forfeited during the period.
    Fact StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited
    Label Stock Issued During Period, Shares, Restricted Stock Award, Forfeited
    Start 2018-01-01
    Taxonomy us-gaap
    Unit shares
    Val 144,630
  144. Description Number of shares related to Restricted Stock Award forfeited during the period.
    Fact StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited
    Frame CY2018Q2
    Label Stock Issued During Period, Shares, Restricted Stock Award, Forfeited
    Start 2018-04-01
    Taxonomy us-gaap
    Unit shares
    Val 144,630
  145. Description Amount of realized gain (loss) on investment in marketable security, including other-than-temporary impairment (OTTI).
    Fact MarketableSecuritiesRealizedGainLoss
    Label Marketable Securities, Realized Gain (Loss)
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 9,552,000
  146. Description Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) from continuing operations available to common shareholders.
    Fact NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic
    Label Net Income (Loss) from Continuing Operations Available to Common Shareholders, Basic
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 63,999,000
  147. Description Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) from continuing operations available to common shareholders.
    Fact NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic
    Frame CY2018Q2
    Label Net Income (Loss) from Continuing Operations Available to Common Shareholders, Basic
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 20,001,000
  148. Description Amount of cash inflow (outflow) from operating activities, excluding discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.
    Fact NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
    Label Net Cash Provided by (Used in) Operating Activities, Continuing Operations
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val -316,640,000
  149. Description The amount of net income (loss) from continuing operations per each share of common stock or unit outstanding during the reporting period.
    Fact IncomeLossFromContinuingOperationsPerBasicShare
    Label Income (Loss) from Continuing Operations, Per Basic Share
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 0.2
  150. Description The amount of net income (loss) from continuing operations per each share of common stock or unit outstanding during the reporting period.
    Fact IncomeLossFromContinuingOperationsPerBasicShare
    Frame CY2018Q2
    Label Income (Loss) from Continuing Operations, Per Basic Share
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 0.06
  151. Description Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income (loss) and other comprehensive income (loss), attributable to noncontrolling interests. Excludes changes in equity resulting from investments by owners and distributions to owners.
    Fact ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest
    Label Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 51,662,000
  152. Description Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income (loss) and other comprehensive income (loss), attributable to noncontrolling interests. Excludes changes in equity resulting from investments by owners and distributions to owners.
    Fact ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest
    Frame CY2018Q2
    Label Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 12,373,000
  153. Description Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.
    Fact StockIssuedDuringPeriodValueNewIssues
    Label Stock Issued During Period, Value, New Issues
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 312,259,000
  154. Description Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.
    Fact StockIssuedDuringPeriodValueNewIssues
    Frame CY2018Q2
    Label Stock Issued During Period, Value, New Issues
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 81,209,000
  155. Description The portion of net income or loss attributable to temporary equity interest.
    Fact TemporaryEquityNetIncome
    Label Temporary Equity, Net Income
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 2,380,000
  156. Description Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).
    Fact Revenues
    Label Revenues
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,015,817,000
  157. Description Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).
    Fact Revenues
    Frame CY2018Q2
    Label Revenues
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 491,043,000
  158. Description Amount of income (loss) for proportionate share of equity method investee's income (loss).
    Fact IncomeLossFromEquityMethodInvestments
    Label Income (Loss) from Equity Method Investments
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 3,635,000
  159. Description Amount of income (loss) for proportionate share of equity method investee's income (loss).
    Fact IncomeLossFromEquityMethodInvestments
    Frame CY2018Q2
    Label Income (Loss) from Equity Method Investments
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 1,011,000
  160. Description Amount of net occupancy expense that may include items, such as depreciation of facilities and equipment, lease expenses, property taxes and property and casualty insurance expense.
    Fact OccupancyNet
    Label Occupancy, Net
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 71,512,000
  161. Description Amount of net occupancy expense that may include items, such as depreciation of facilities and equipment, lease expenses, property taxes and property and casualty insurance expense.
    Fact OccupancyNet
    Frame CY2018Q2
    Label Occupancy, Net
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 34,365,000
  162. Description Amount after tax of income (loss) from a discontinued operation attributable to the noncontrolling interest. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.
    Fact IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest
    Label Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Noncontrolling Interest
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 12,412,000
  163. Description Amount after tax of income (loss) from a discontinued operation attributable to the noncontrolling interest. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.
    Fact IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest
    Frame CY2018Q2
    Label Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Noncontrolling Interest
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 2,429,000
  164. Description The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.
    Fact DepreciationDepletionAndAmortization
    Label Depreciation, Depletion and Amortization
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 33,949,000
  165. Description Value of stock related to Restricted Stock Awards forfeited during the period.
    Fact StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures
    Label Stock Issued During Period, Value, Restricted Stock Award, Forfeitures
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 910,000
  166. Description Value of stock related to Restricted Stock Awards forfeited during the period.
    Fact StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures
    Frame CY2018Q2
    Label Stock Issued During Period, Value, Restricted Stock Award, Forfeitures
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 910,000
  167. Description The increase (decrease) during the reporting period in the amount due within one year (or one business cycle) from employees for floats, allowances and loans (generally evidenced by promissory notes).
    Fact IncreaseDecreaseInDueFromEmployeeCurrent
    Label Increase (Decrease) in Due from Employee, Current
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 41,636,000
  168. Description The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.
    Fact PaymentsToAcquireEquityMethodInvestments
    Label Payments to Acquire Equity Method Investments
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 368,000
  169. Description The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).
    Fact NonoperatingIncomeExpense
    Label Nonoperating Income (Expense)
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 36,527,000
  170. Description The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).
    Fact NonoperatingIncomeExpense
    Frame CY2018Q2
    Label Nonoperating Income (Expense)
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD
    Val 2,492,000
  171. Description Amount of increase (decrease) in operating assets classified as other.
    Fact IncreaseDecreaseInOtherOperatingAssets
    Label Increase (Decrease) in Other Operating Assets
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 21,215,000
  172. Description The amount of net income (loss) derived from continuing operations during the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.
    Fact IncomeLossFromContinuingOperationsPerDilutedShare
    Label Income (Loss) from Continuing Operations, Per Diluted Share
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 0.2
  173. Description The amount of net income (loss) derived from continuing operations during the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.
    Fact IncomeLossFromContinuingOperationsPerDilutedShare
    Frame CY2018Q2
    Label Income (Loss) from Continuing Operations, Per Diluted Share
    Start 2018-04-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 0.06

Facts up to 2018-03-31

Description Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.
Fact StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
Frame CY2018Q1I
Label Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest
Taxonomy us-gaap
Unit USD
Val 1,439,202,000

Facts up to 2017-12-31

  1. Description Carrying amount, attributable to parent and noncontrolling interests, of an entity's issued and outstanding stock which is not included within permanent equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. Includes stock with a put option held by an ESOP and stock redeemable by a holder only in the event of a change in control of the issuer.
    Fact TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests
    Label Temporary Equity, Carrying Amount, Including Portion Attributable to Noncontrolling Interests
    Taxonomy us-gaap
    Unit USD
    Val 46,415,000
  2. Description Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.
    Fact StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
    Label Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest
    Taxonomy us-gaap
    Unit USD
    Val 1,139,741,000
  3. Description Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including, but not limited to, disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.
    Fact CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
    Label Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations
    Taxonomy us-gaap
    Unit USD
    Val 796,790,000

The filing refers to a past date, and does not necessarily reflect the current state. The current state is available on the following page: BGC Group Inc., New York, United States.