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U.S. Securities and Exchange Commission's Electronic Data Gathering, Analysis, and Retrieval system Sec 4 May 2017 U.S. Securities and Exchange Commission's Electronic Data Gathering, Analysis, and Retrieval system, United States

Text

Entity

entityName STATE STREET CORPORATION
Cik 93751
Form 10-Q
Filed 2017-05-04
Fp Q1
Fy 2017
Accn 0000093751-17-000338

Facts up to 2017-04-30

Description Indicate number of shares or other units outstanding of each of registrant's classes of capital or common stock or other ownership interests, if and as stated on cover of related periodic report. Where multiple classes or units exist define each class/interest by adding class of stock items such as Common Class A [Member], Common Class B [Member] or Partnership Interest [Member] onto the Instrument [Domain] of the Entity Listings, Instrument.
Fact EntityCommonStockSharesOutstanding
Frame CY2017Q1I
Label Entity Common Stock, Shares Outstanding
Taxonomy dei
Unit shares
Val 376,235,731

Facts up to 2017-03-31

  1. Description The amount of securities on deposit with clearing organizations and other entities which provide services necessary to operations of the Company. This item would include, for instance, securities advanced as refundable collateral for securities borrowed.
    Fact DepositsWithClearingOrganizationsAndOthersSecurities
    Frame CY2017Q1I
    Label Deposits with Clearing Organizations and Others, Securities
    Taxonomy us-gaap
    Unit USD
    Val 108,000,000
  2. Description Amount of fees and commissions from financial services and banking activities and correspondent clearing. Includes fees from depositor accounts, credit cards, merchant discounts, and fiduciary and trust activities, guarantee fees, investment advisory, management, and administrative fees, transfer agent fees, and insurance commissions.
    Fact FeesAndCommissions
    Frame CY2017Q1
    Label Fees and Commissions (Deprecated 2018-01-31)
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 2,198,000,000
  3. Description Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.
    Fact RestructuringCharges
    Frame CY2017Q1
    Label Restructuring Charges
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 16,000,000
  4. Description Accumulated adjustment, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains or losses.
    Fact AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax
    Frame CY2017Q1I
    Label Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax
    Taxonomy us-gaap
    Unit USD
    Val -1,770,000,000
  5. Description Amount of cash (inflow) outflow from investing activities classified as other.
    Fact PaymentsForProceedsFromOtherInvestingActivities
    Label Payments for (Proceeds from) Other Investing Activities
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 5,000,000
  6. Description The amount of net income (loss) for 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 EarningsPerShareDiluted
    Label Earnings Per Share, Diluted
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 1.15
  7. Description Amount of asset associated with derivative liabilities, securities sold under agreements to repurchase and securities loaned.
    Fact DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedAsset
    Frame CY2017Q1I
    Label Derivative Liability, Securities Sold under Agreements to Repurchase, Securities Loaned, Asset
    Taxonomy us-gaap
    Unit USD
    Val 42,739,000,000
  8. 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 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 82,000,000
  9. Description Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.
    Fact FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue
    Label Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value
    Taxonomy us-gaap
    Unit USD
    Val 1,265,000,000
  10. Description The net amount of operating interest income (expense).
    Fact InterestIncomeExpenseNet
    Label Interest Income (Expense), Net
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 510,000,000
  11. 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 CY2017Q1I
    Label Securities Sold under Agreements to Repurchase
    Taxonomy us-gaap
    Unit USD
    Val 4,003,000,000
  12. 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 CY2017Q1I
    Label Goodwill
    Taxonomy us-gaap
    Unit USD
    Val 5,855,000,000
  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 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 197,000,000
  14. 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 CY2017Q1I
    Label Derivative Asset, Fair Value, Gross Asset
    Taxonomy us-gaap
    Unit USD
    Val 9,170,000,000
  15. Description Amount after tax of reclassification adjustments of other comprehensive income (loss).
    Fact ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax
    Label Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 18,000,000
  16. Description Amount after tax and reclassification adjustments of other comprehensive income (loss).
    Fact OtherComprehensiveIncomeLossNetOfTax
    Label Other Comprehensive Income (Loss), Net of Tax
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 235,000,000
  17. Description Amount of accumulated unrecognized gain on investment in debt security measured at amortized cost (held-to-maturity).
    Fact HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain
    Frame CY2017Q1I
    Label Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain
    Taxonomy us-gaap
    Unit USD
    Val 180,000,000
  18. Description Amount of cash outflow through purchase of long-term held-to-maturity securities.
    Fact PaymentsToAcquireHeldToMaturitySecurities
    Label Payments to Acquire Held-to-maturity Securities
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,311,000,000
  19. Description Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale that have been in a continuous loss position for less than twelve months.
    Fact AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
    Frame CY2017Q1I
    Label Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss
    Taxonomy us-gaap
    Unit USD
    Val 230,000,000
  20. Description Amount of increase (decrease) from foreign currency translation adjustments and purchase accounting adjustments 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 GoodwillTranslationAndPurchaseAccountingAdjustments
    Frame CY2017Q1
    Label Goodwill, Translation and Purchase Accounting Adjustments
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 22,000,000
  21. Description Amount of cash inflow (outflow) from financing activities, including 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 NetCashProvidedByUsedInFinancingActivities
    Label Net Cash Provided by (Used in) Financing Activities
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -5,124,000,000
  22. Description Ratio of minimum total risk-based capital to risk-weighted assets required for capital adequacy as defined by regulatory framework.
    Fact CapitalRequiredForCapitalAdequacyToRiskWeightedAssets
    Frame CY2017Q1I
    Label Banking Regulation, Total Risk-Based Capital Ratio, Capital Adequacy, Minimum
    Taxonomy us-gaap
    Unit pure
    Val 0.1
  23. Description Ratio of minimum Tier 1 risk-based capital to risk-weighted assets required for capital adequacy as defined by regulatory framework.
    Fact TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets
    Frame CY2017Q1I
    Label Banking Regulation, Tier One Risk-Based Capital Ratio, Capital Adequacy, Minimum
    Taxonomy us-gaap
    Unit pure
    Val 0.08
  24. Description Number of financing receivables that have been modified by troubled debt restructurings.
    Fact FinancingReceivableModificationsNumberOfContracts2
    Frame CY2017Q1
    Label Financing Receivable, Modifications, Number of Contracts
    Start 2017-01-01
    Taxonomy us-gaap
    Unit loan
    Val 0
  25. Description The cash inflow associated with the maturity, prepayments and calls (requests for early payments) of debt securities designated as held-to-maturity.
    Fact ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities
    Label Proceeds from Maturities, Prepayments and Calls of Held-to-maturity Securities
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 670,000,000
  26. Description Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.
    Fact DeferredIncomeTaxExpenseBenefit
    Label Deferred Income Tax Expense (Benefit)
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -3,000,000
  27. Description Fair value of investment in debt security measured at amortized cost (held-to-maturity), in continuous unrealized loss position for 12 months or longer.
    Fact HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue
    Frame CY2017Q1I
    Label Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value
    Taxonomy us-gaap
    Unit USD
    Val 1,612,000,000
  28. Description Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.
    Fact TreasuryStockShares
    Frame CY2017Q1I
    Label Treasury Stock, Shares
    Taxonomy us-gaap
    Unit shares
    Val 127,520,264
  29. Description Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in second through 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 AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue
    Frame CY2017Q1I
    Label Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five
    Taxonomy us-gaap
    Unit USD
    Val 19,415,000,000
  30. Description Amount of paid and unpaid preferred stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK).
    Fact DividendsPreferredStock
    Label Dividends, Preferred Stock
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 55,000,000
  31. 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 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 446,000,000
  32. Description Amount of increase (decrease) in deposit liabilities classified as other.
    Fact IncreaseDecreaseInOtherDeposits
    Label Increase (Decrease) in Other Deposits
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 2,095,000,000
  33. 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 CY2017Q1I
    Label Derivative Liability, Fair Value, Gross Asset
    Taxonomy us-gaap
    Unit USD
    Val 5,338,000,000
  34. 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 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 164,000,000
  35. 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 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 52,000,000
  36. 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 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 737,000,000
  37. Description The cash inflow from the sale of an investment interest in a joint venture that the reporting entity has not previously accounted for using consolidation or the equity method of accounting.
    Fact ProceedsFromDivestitureOfInterestInJointVenture
    Label Proceeds from Divestiture of Interest in Joint Venture
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 172,000,000
  38. Description Amount of investment in debt security measured at fair value with change in fair value recognized in net income (trading) and investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).
    Fact TradingSecurities
    Frame CY2017Q1I
    Label Debt Securities, Trading, and Equity Securities, FV-NI
    Taxonomy us-gaap
    Unit USD
    Val 945,000,000
  39. Description Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.
    Fact RestructuringReserve
    Frame CY2017Q1I
    Label Restructuring Reserve
    Taxonomy us-gaap
    Unit USD
    Val 54,000,000
  40. Description Sum of the carrying amounts as of the date of the latest financial statement presented of securities which are owned but transferred to another party to serve as collateral to partially or fully secure a debt obligation, repurchase agreement or other current or potential obligation, and for which the transferee is not permitted to sell or re-pledge them to an unrelated party.
    Fact PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesPledged
    Frame CY2017Q1I
    Label Pledged Financial Instruments, Not Separately Reported, Securities
    Taxonomy us-gaap
    Unit USD
    Val 48,000,000,000
  41. Description Fair value, after effects of master netting arrangements, 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. Includes assets not subject to a master netting arrangement and not elected to be offset.
    Fact DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral
    Frame CY2017Q1I
    Label Derivative Asset, Fair Value, Amount Offset Against Collateral
    Taxonomy us-gaap
    Unit USD
    Val 2,988,000,000
  42. Description Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.
    Fact FiniteLivedIntangibleAssetsNet
    Frame CY2017Q1I
    Label Finite-Lived Intangible Assets, Net
    Taxonomy us-gaap
    Unit USD
    Val 1,710,000,000
  43. 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 CY2017Q1I
    Label Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest
    Taxonomy us-gaap
    Unit USD
    Val 21,294,000,000
  44. Description Amount of income (expense) included in net income that results in no cash inflow (outflow), classified as other.
    Fact OtherNoncashIncomeExpense
    Label Other Noncash Income (Expense)
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -105,000,000
  45. Description Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.
    Fact FinancingReceivableAllowanceForCreditLosses
    Label Financing Receivable, Allowance for Credit Loss
    Taxonomy us-gaap
    Unit USD
    Val 51,000,000
  46. Description Amount, after effects of master netting arrangements, of derivative assets, securities purchased under agreements to resell and securities borrowed offset against an obligation to return collateral under a master netting arrangement. Includes assets not subject to a master netting arrangement and not elected to be offset.
    Fact DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedAmountOffsetAgainstCollateral
    Frame CY2017Q1I
    Label Derivative Asset, Securities Purchased under Agreements to Resell, Securities Borrowed, Amount Offset Against Collateral
    Taxonomy us-gaap
    Unit USD
    Val 2,988,000,000
  47. Description Amount of revenue from providing investment advisory, asset management and administrative services, including, but not limited to, distribution and shareholder services, accounting, tax, legal, regulatory filing, share registration, and shareholder correspondence activities.
    Fact InvestmentAdvisoryManagementAndAdministrativeFees
    Label Investment Advisory, Management and Administrative Fees (Deprecated 2018-01-31)
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 382,000,000
  48. 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 CY2017Q1I
    Label Property, Plant and Equipment, Net
    Taxonomy us-gaap
    Unit USD
    Val 2,101,000,000
  49. Description Amount, before effects of master netting arrangements, of derivative liabilities, securities sold under agreements to repurchase and securities loaned. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.
    Fact DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedGross
    Frame CY2017Q1I
    Label Derivative Liability, Securities Sold under Agreements to Repurchase, Securities Loaned, Gross
    Taxonomy us-gaap
    Unit USD
    Val 55,897,000,000
  50. Description Aggregate amount of interest paid or due on all long-term debt.
    Fact InterestExpenseLongTermDebt
    Label Interest Expense, Long-term Debt
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 73,000,000
  51. Description The total amount of proceeds received for the sale of securities, categorized neither as held-to-maturity nor trading securities, during the reporting period.
    Fact AvailableForSaleSecuritiesGrossRealizedGainsLossesSaleProceeds
    Label Available-for-sale Securities, Gross Realized Gains (Losses), Sale Proceeds (Deprecated 2018-01-31)
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -40,000,000
  52. Description Aggregate dividends declared during the period for each share of common stock outstanding.
    Fact CommonStockDividendsPerShareDeclared
    Label Common Stock, Dividends, Per Share, Declared
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 0.38
  53. Description The amount by which the fair value of an investment is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income.
    Fact ImpairmentOfInvestments
    Label Other than Temporary Impairment Losses, Investments
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,000,000
  54. 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 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  55. Description Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity), in unrealized loss position.
    Fact HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss
    Frame CY2017Q1I
    Label Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss
    Taxonomy us-gaap
    Unit USD
    Val 315,000,000
  56. Description Amount of expense for salary, wage, profit sharing; incentive and equity-based compensation; and other employee benefit.
    Fact LaborAndRelatedExpense
    Label Labor and Related Expense
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,166,000,000
  57. Description Amount of unrecognized tax benefits.
    Fact UnrecognizedTaxBenefits
    Frame CY2017Q1I
    Label Unrecognized Tax Benefits
    Taxonomy us-gaap
    Unit USD
    Val 64,000,000
  58. Description The cash inflow associated with the sale of debt and equity securities classified as available-for-sale securities.
    Fact ProceedsFromSaleOfAvailableForSaleSecurities
    Label Proceeds from Sale of Available-for-sale Securities
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 2,165,000,000
  59. 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 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 91,000,000
  60. Description Amount of assets classified as other.
    Fact OtherAssets
    Frame CY2017Q1I
    Label Other Assets
    Taxonomy us-gaap
    Unit USD
    Val 34,497,000,000
  61. Description Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing after tenth 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 AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue
    Frame CY2017Q1I
    Label Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10
    Taxonomy us-gaap
    Unit USD
    Val 12,600,000,000
  62. Description This item represents the aggregate fair value of investments in debt and equity securities in an unrealized loss position which are categorized neither as held-to-maturity nor trading securities.
    Fact AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue
    Frame CY2017Q1I
    Label Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value
    Taxonomy us-gaap
    Unit USD
    Val 20,638,000,000
  63. Description For banks and other depository institutions (including Federal Reserve Banks, if applicable): Interest-bearing deposits in other financial institutions for relatively short periods of time including, for example, certificates of deposits, which are presented separately from cash on the balance sheet.
    Fact InterestBearingDepositsInBanks
    Frame CY2017Q1I
    Label Interest-bearing Deposits in Banks and Other Financial Institutions
    Taxonomy us-gaap
    Unit USD
    Val 66,789,000,000
  64. Description Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.
    Fact LoansAndLeasesReceivableNetReportedAmount
    Frame CY2017Q1I
    Label Loans and Leases Receivable, Net Amount
    Taxonomy us-gaap
    Unit USD
    Val 22,486,000,000
  65. Description Amount of right to receive cash collateral under master netting arrangements that have not been offset against derivative liabilities, securities sold under agreements to repurchase and securities loaned.
    Fact DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedCollateralRightToReclaimCash
    Frame CY2017Q1I
    Label Derivative Liability, Securities Sold under Agreements to Repurchase, Securities Loaned, Collateral, Right to Reclaim Cash
    Taxonomy us-gaap
    Unit USD
    Val 7,011,000,000
  66. Description Amount of cash inflow from realized tax benefit related to deductible compensation cost reported on the entity's tax return for equity instruments in excess of the compensation cost for those instruments recognized for financial reporting purposes.
    Fact ExcessTaxBenefitFromShareBasedCompensationFinancingActivities
    Frame CY2017Q1
    Label Excess Tax Benefit from Share-based Compensation, Financing Activities
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  67. Description Face amount per share of no-par value preferred stock nonredeemable or redeemable solely at the option of the issuer.
    Fact PreferredStockNoParValue
    Frame CY2017Q1I
    Label Preferred Stock, No Par Value
    Taxonomy us-gaap
    Unit USD/shares
    Val 0
  68. Description Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.
    Fact AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
    Label Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
    Start 2017-01-01
    Taxonomy us-gaap
    Unit shares
    Val 580,000
  69. Description Carrying amount as of the balance sheet date of loans that have been pledged as collateral for borrowings. If the secured party has the right by contract or custom to sell or re-pledge the collateral, then the debtor reclassifies that asset and report that asset in its statement of financial position separately from other assets not so encumbered.
    Fact LoansPledgedAsCollateral
    Frame CY2017Q1I
    Label Loans Pledged as Collateral
    Taxonomy us-gaap
    Unit USD
    Val 2,100,000,000
  70. Description Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale that have been in a continuous loss position for twelve months or longer.
    Fact AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
    Frame CY2017Q1I
    Label Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss
    Taxonomy us-gaap
    Unit USD
    Val 101,000,000
  71. Description Amount of unrealized and realized gain (loss) on investment in marketable security, including other-than-temporary impairment (OTTI).
    Fact MarketableSecuritiesGainLoss
    Label Marketable Securities, Gain (Loss)
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -40,000,000
  72. Description Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in next 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 AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue
    Frame CY2017Q1I
    Label Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One
    Taxonomy us-gaap
    Unit USD
    Val 11,823,000,000
  73. Description Net cash inflow (outflow) of time deposits.
    Fact IncreaseDecreaseInTimeDeposits
    Label Increase (Decrease) in Time Deposits
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -5,793,000,000
  74. Description The carrying amount of the consolidated Variable Interest Entity's assets included in the reporting entity's statement of financial position.
    Fact VariableInterestEntityConsolidatedCarryingAmountAssets
    Frame CY2017Q1I
    Label Variable Interest Entity, Consolidated, Carrying Amount, Assets (Deprecated 2020-01-31)
    Taxonomy us-gaap
    Unit USD
    Val 1,160,000,000
  75. Description Amount of fee and commission revenue classified as other.
    Fact FeesAndCommissionsOther
    Label Fees and Commissions, Other (Deprecated 2018-01-31)
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 112,000,000
  76. 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 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 94,000,000
  77. Description Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests.
    Fact PaymentsOfDividends
    Label Payments of Dividends
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 201,000,000
  78. Description Face amount or stated value per share of common stock.
    Fact CommonStockParOrStatedValuePerShare
    Frame CY2017Q1I
    Label Common Stock, Par or Stated Value Per Share
    Taxonomy us-gaap
    Unit USD/shares
    Val 1
  79. Description Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.
    Fact PaymentsForRestructuring
    Frame CY2017Q1
    Label Payments for Restructuring
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 18,000,000
  80. Description Interest, dividends, rents, ancillary and other revenues earned but not yet received by the entity on its investments.
    Fact AccruedInvestmentIncomeReceivable
    Frame CY2017Q1I
    Label Accrued Investment Income Receivable
    Taxonomy us-gaap
    Unit USD
    Val 2,690,000,000
  81. 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 CY2017Q1I
    Label Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment
    Taxonomy us-gaap
    Unit USD
    Val 3,463,000,000
  82. Description Amount of transfers of assets measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2.
    Fact FairValueAssetsLevel1ToLevel2TransfersAmount
    Frame CY2017Q1I
    Label Fair Value, Assets, Level 1 to Level 2 Transfers, Amount
    Taxonomy us-gaap
    Unit USD
    Val 0
  83. Description Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity), in continuous loss position for 12 months or longer.
    Fact HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
    Frame CY2017Q1I
    Label Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss
    Taxonomy us-gaap
    Unit USD
    Val 34,000,000
  84. Description The cumulative amount of credit losses recognized in earnings related to debt securities held for which a portion of an other than temporary impairment (OTTI) was recognized in other comprehensive income (a component of shareholders' equity).
    Fact OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld
    Label Other than Temporary Impairment, Credit Losses Recognized in Earnings, Credit Losses on Debt Securities Held
    Taxonomy us-gaap
    Unit USD
    Val 66,000,000
  85. Description Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any.
    Fact LiabilitiesAndStockholdersEquity
    Frame CY2017Q1I
    Label Liabilities and Equity
    Taxonomy us-gaap
    Unit USD
    Val 236,802,000,000
  86. Description Accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses.
    Fact AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax
    Frame CY2017Q1I
    Label Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax
    Taxonomy us-gaap
    Unit USD
    Val 159,000,000
  87. Description Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities.
    Fact AccruedLiabilitiesCurrentAndNoncurrent
    Frame CY2017Q1I
    Label Accrued Liabilities
    Taxonomy us-gaap
    Unit USD
    Val 15,469,000,000
  88. Description Amount of borrowings classified as other, maturing within one year or the normal operating cycle, if longer.
    Fact OtherShortTermBorrowings
    Frame CY2017Q1I
    Label Other Short-term Borrowings
    Taxonomy us-gaap
    Unit USD
    Val 1,177,000,000
  89. Description Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity), in continuous loss position for less than 12 months.
    Fact HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
    Frame CY2017Q1I
    Label Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss
    Taxonomy us-gaap
    Unit USD
    Val 281,000,000
  90. Description Amount, before 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 elected not to be offset. Excludes liabilities not subject to a master netting arrangement.
    Fact SecuritiesSoldUnderAgreementsToRepurchaseGross
    Frame CY2017Q1I
    Label Securities Sold under Agreements to Repurchase, Gross
    Taxonomy us-gaap
    Unit USD
    Val 36,379,000,000
  91. Description The cumulative amount of the reporting entity's undistributed earnings or deficit.
    Fact RetainedEarningsAccumulatedDeficit
    Frame CY2017Q1I
    Label Retained Earnings (Accumulated Deficit)
    Taxonomy us-gaap
    Unit USD
    Val 17,762,000,000
  92. Description Amount of operating interest income, including amortization and accretion of premiums and discounts, on U.S. Treasury securities and other U.S. government securities.
    Fact InterestIncomeSecuritiesUSTreasuryAndOtherUSGovernment
    Label Interest Income, Securities, US Treasury and Other US Government
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 212,000,000
  93. Description Amount of divestiture 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 GoodwillWrittenOffRelatedToSaleOfBusinessUnit
    Frame CY2017Q1
    Label Goodwill, Written off Related to Sale of Business Unit
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,000,000
  94. Description Fair value of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing after tenth 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 HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue
    Frame CY2017Q1I
    Label Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10
    Taxonomy us-gaap
    Unit USD
    Val 12,772,000,000
  95. Description Income from services rendered by trust departments or by any consolidated subsidiaries acting in a fiduciary capacity, including fees earned for (1) acting as an agent for fiduciary placement and loans and (2) custody or investment advisory services when such fees are not separately billed to the customer. This item excludes commissions and fees received for the accumulation or disbursement of funds deposited to Individual Retirement or Keogh plan accounts when such are not handled by the reporting entity's trust department.
    Fact FeesAndCommissionsFiduciaryAndTrustActivities
    Label Fees and Commissions, Fiduciary and Trust Activities (Deprecated 2018-01-31)
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,296,000,000
  96. 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 CY2017Q1I
    Label Equity Method Investments
    Taxonomy us-gaap
    Unit USD
    Val 2,088,000,000
  97. Description The aggregate interest and fee income generated by: (1) loans the Entity has positive intent and ability to hold for the foreseeable future, or until maturity or payoff, including commercial and consumer loans, whether domestic or foreign, which may consist of: (a) industrial and agricultural; (b) real estate; and (c) real estate construction loans; (d) trade financing; (e) lease financing; (f) home equity lines-of-credit; (g) automobile and other vehicle loans; and (h) credit card and other revolving-type loans and (2) loans and leases held-for-sale which may include mortgage loans, direct financing, and sales-type leases.
    Fact InterestAndFeeIncomeLoansAndLeases
    Label Interest and Fee Income, Loans and Leases
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 105,000,000
  98. Description Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.
    Fact AvailableForSaleSecurities
    Frame CY2017Q1I
    Label Available-for-sale Securities
    Taxonomy us-gaap
    Unit USD
    Val 58,810,000,000
  99. Description Amount of other miscellaneous assets.
    Fact OtherAssetsMiscellaneous
    Frame CY2017Q1I
    Label Other Assets, Miscellaneous
    Taxonomy us-gaap
    Unit USD
    Val 317,000,000
  100. Description Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.
    Fact IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
    Label Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 584,000,000
  101. Description Amount of loss contingency liability.
    Fact LossContingencyAccrualAtCarryingValue
    Frame CY2017Q1I
    Label Loss Contingency Accrual
    Taxonomy us-gaap
    Unit USD
    Val 58,000,000
  102. Description This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.
    Fact BusinessCombinationAcquisitionRelatedCosts
    Frame CY2017Q1
    Label Business Combination, Acquisition Related Costs
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 12,000,000
  103. Description This item represents the aggregate fair value of investments in debt and equity securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for less than twelve months.
    Fact AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue
    Frame CY2017Q1I
    Label Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value
    Taxonomy us-gaap
    Unit USD
    Val 14,679,000,000
  104. Description Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.
    Fact AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
    Frame CY2017Q1I
    Label Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax
    Taxonomy us-gaap
    Unit USD
    Val 331,000,000
  105. Description The net cash inflow or outflow for borrowing having initial term of repayment within one year or the normal operating cycle, if longer.
    Fact ProceedsFromRepaymentsOfShortTermDebt
    Label Proceeds from (Repayments of) Short-term Debt
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -805,000,000
  106. Description Amount, after tax, of accumulated unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).
    Fact AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax
    Frame CY2017Q1I
    Label AOCI, Debt Securities, Available-for-sale, Adjustment, after Tax
    Taxonomy us-gaap
    Unit USD
    Val -21,000,000
  107. Description Fair value, after effects of master netting arrangements, 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. Includes liabilities not subject to a master netting arrangement and not elected to be offset.
    Fact DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral
    Frame CY2017Q1I
    Label Derivative Liability, Fair Value, Amount Offset Against Collateral
    Taxonomy us-gaap
    Unit USD
    Val 3,960,000,000
  108. Description Carrying amount as of the balance sheet date of expenditures made in advance of when the economic benefit of the cost will be realized, and which will be expensed in future periods with the passage of time or when a triggering event occurs.
    Fact PrepaidExpenseCurrentAndNoncurrent
    Frame CY2017Q1I
    Label Prepaid Expense
    Taxonomy us-gaap
    Unit USD
    Val 457,000,000
  109. Description Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.
    Fact AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
    Frame CY2017Q1I
    Label Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax
    Taxonomy us-gaap
    Unit USD
    Val 483,000,000
  110. Description Amount of investment in impaired financing receivables for which there is a related allowance for credit losses.
    Fact ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
    Frame CY2017Q1I
    Label Impaired Financing Receivable, with Related Allowance, Recorded Investment
    Taxonomy us-gaap
    Unit USD
    Val 15,000,000
  111. Description Total amount of interest-bearing domestic deposit liabilities, which may include brokered, retail, demand, checking, notice of withdrawal, money market and other interest-bearing deposits.
    Fact InterestBearingDepositLiabilitiesDomestic
    Frame CY2017Q1I
    Label Interest-bearing Deposit Liabilities, Domestic
    Taxonomy us-gaap
    Unit USD
    Val 26,746,000,000
  112. Description Amount, after tax and before adjustment, of unrealized holding gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Excludes unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale.
    Fact OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax
    Label OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 201,000,000
  113. Description Amount of cash outflow for debt, mandatory redeemable security, and principal payment for finance lease obligation.
    Fact RepaymentsOfLongTermDebtAndCapitalSecurities
    Label Repayment of Long-term Debt, Long-term Lease Obligation, and Capital Security
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 11,000,000
  114. Description Amount, after the effects of master netting arrangements, of funds outstanding loaned in the form of a security resale agreement between the entity and another party for the purchase and resale of identical or substantially the same securities at a date certain for a specified price. Includes purchases of participations in pools of securities that are subject to a resale agreement, assets not subject to a master netting arrangement and not elected to be offset.
    Fact SecuritiesPurchasedUnderAgreementsToResell
    Frame CY2017Q1I
    Label Securities Purchased under Agreements to Resell
    Taxonomy us-gaap
    Unit USD
    Val 2,181,000,000
  115. Description Amount of cash inflow (outflow) from investing activities, including 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 NetCashProvidedByUsedInInvestingActivities
    Label Net Cash Provided by (Used in) Investing Activities
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 3,210,000,000
  116. Description The amount of expense in the period for communications and data processing expense.
    Fact CommunicationsAndInformationTechnology
    Label Communications and Information Technology
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 287,000,000
  117. Description Value of stock issued as a result of the exercise of stock options.
    Fact StockIssuedDuringPeriodValueStockOptionsExercised
    Label Stock Issued During Period, Value, Stock Options Exercised
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 60,000,000
  118. Description The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.
    Fact PreferredStockSharesAuthorized
    Frame CY2017Q1I
    Label Preferred Stock, Shares Authorized
    Taxonomy us-gaap
    Unit shares
    Val 3,500,000
  119. Description Amount of long-term debt and lease obligation, including portion classified as current.
    Fact LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities
    Frame CY2017Q1I
    Label Long-term Debt and Lease Obligation, Including Current Maturities
    Taxonomy us-gaap
    Unit USD
    Val 11,394,000,000
  120. 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
    Frame CY2017Q1
    Label Goodwill, Acquired During Period
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 20,000,000
  121. Description Amount of increase (decrease) in cash and cash equivalents. Cash and cash equivalents are the 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. Includes effect from exchange rate changes.
    Fact CashAndCashEquivalentsPeriodIncreaseDecrease
    Label Cash and Cash Equivalents, Period Increase (Decrease)
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,595,000,000
  122. Description Amount after tax of reclassification adjustments of other comprehensive income (loss) attributable to parent.
    Fact ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent
    Frame CY2017Q1
    Label Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 18,000,000
  123. Description Amount of purchases of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.
    Fact FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases
    Label Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 219,000,000
  124. Description Aggregate amount of interest expense on all deposits.
    Fact InterestExpenseDeposits
    Label Interest Expense, Deposits
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 44,000,000
  125. Description The aggregate interest expense incurred on short-term borrowings including commercial paper and Federal funds purchased and securities sold under agreements to repurchase.
    Fact InterestExpenseShortTermBorrowings
    Label Interest Expense, Short-term Borrowings
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 2,000,000
  126. Description Amount of the cost of borrowed funds accounted for as interest expense.
    Fact InterestExpense
    Label Interest Expense
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 140,000,000
  127. Description Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.
    Fact FinitelivedIntangibleAssetsAcquired1
    Frame CY2017Q1
    Label Finite-lived Intangible Assets Acquired
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 11,000,000
  128. Description Amount, before effects of master netting arrangements, of derivative assets, securities purchased under agreements to resell and securities borrowed. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.
    Fact DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedGross
    Frame CY2017Q1I
    Label Derivative Asset, Securities Purchased under Agreements to Resell, Securities Borrowed, Gross
    Taxonomy us-gaap
    Unit USD
    Val 71,305,000,000
  129. Description Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.
    Fact LoansAndLeasesReceivableAllowance
    Frame CY2017Q1I
    Label Loans and Leases Receivable, Allowance
    Taxonomy us-gaap
    Unit USD
    Val 51,000,000
  130. Description Amount of transfers of liabilities measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2.
    Fact FairValueLiabilitiesLevel1ToLevel2TransfersAmount
    Frame CY2017Q1I
    Label Fair Value, Liabilities, Level 1 to Level 2 Transfers, Amount
    Taxonomy us-gaap
    Unit USD
    Val 0
  131. Description Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting.
    Fact DeferredTaxAssetsLiabilitiesNet
    Frame CY2017Q1I
    Label Deferred Tax Assets, Net
    Taxonomy us-gaap
    Unit USD
    Val 214,000,000
  132. Description Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders. Includes adjustments to additional paid in capital. Some examples of such adjustments include recording the issuance of debt with a beneficial conversion feature and certain tax consequences of equity instruments awarded to employees. Use this element for the aggregate amount of additional paid-in capital associated with common and preferred stock. For additional paid-in capital associated with only common stock, use the element additional paid in capital, common stock. For additional paid-in capital associated with only preferred stock, use the element additional paid in capital, preferred stock.
    Fact AdditionalPaidInCapital
    Frame CY2017Q1I
    Label Additional Paid in Capital
    Taxonomy us-gaap
    Unit USD
    Val 9,796,000,000
  133. Description Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale in a continuous loss position.
    Fact AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss
    Frame CY2017Q1I
    Label Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss
    Taxonomy us-gaap
    Unit USD
    Val 331,000,000
  134. Description Fair value, after offset of derivative asset, 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 and before offset against a right to receive collateral under a master netting arrangement. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.
    Fact DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral
    Frame CY2017Q1I
    Label Derivative Liability, Fair Value, Amount Not Offset Against Collateral
    Taxonomy us-gaap
    Unit USD
    Val 4,056,000,000
  135. Description The increase (decrease) during the reporting period in the amount of cash that is received as security when loaning securities.
    Fact IncreaseDecreaseInCashCollateralForLoanedSecurities
    Label Increase (Decrease) in Cash Collateral for Loaned Securities
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -68,000,000
  136. Description Interest income, including any amortization and accretion (as applicable) of discounts and premiums, derived from debt securities issued by municipal governments, local taxing districts and US state government agencies.
    Fact InterestIncomeSecuritiesStateAndMunicipal
    Label Interest Income, Securities, State and Municipal
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 59,000,000
  137. Description The net cash outflow or inflow for the increase (decrease) in the beginning and end of period of loan and lease balances which are not originated or purchased specifically for resale. Includes cash payments and proceeds associated with (a) loans held-for-investment, (b) leases held-for-investment, and (c) both.
    Fact PaymentsForProceedsFromLoansAndLeases
    Label Payments for (Proceeds from) Loans and Leases
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 2,769,000,000
  138. Description Fair value of investment in debt security measured at amortized cost (held-to-maturity).
    Fact HeldToMaturitySecuritiesFairValue
    Frame CY2017Q1I
    Label Debt Securities, Held-to-maturity, Fair Value
    Taxonomy us-gaap
    Unit USD
    Val 35,694,000,000
  139. Description Amount of tax expense (benefit), after 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 OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax
    Label Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 123,000,000
  140. Description The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others.
    Fact Deposits
    Frame CY2017Q1I
    Label Deposits
    Taxonomy us-gaap
    Unit USD
    Val 183,465,000,000
  141. Description Fair value of collateral permitted, by contact or custom, to be sold or re-pledged.
    Fact FairValueOfSecuritiesReceivedAsCollateralThatCanBeResoldOrRepledged
    Frame CY2017Q1I
    Label Fair Value of Securities Received as Collateral that Can be Resold or Repledged
    Taxonomy us-gaap
    Unit USD
    Val 1,420,000,000
  142. Description Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity).
    Fact HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss
    Frame CY2017Q1I
    Label Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss
    Taxonomy us-gaap
    Unit USD
    Val 315,000,000
  143. Description Fair value of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing in second through 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 HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue
    Frame CY2017Q1I
    Label Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five
    Taxonomy us-gaap
    Unit USD
    Val 18,146,000,000
  144. Description Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.
    Fact LoansAndLeasesReceivableGrossCarryingAmount
    Frame CY2017Q1I
    Label Loans and Leases Receivable, Gross
    Taxonomy us-gaap
    Unit USD
    Val 22,537,000,000
  145. Description Amount of gain (loss) recognized in other comprehensive income (OCI) from asset measured at fair value on recurring basis using unobservable input (level 3).
    Fact FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss
    Label Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss)
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 2,000,000
  146. 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 2017-01-01
    Taxonomy us-gaap
    Unit shares
    Val 381,224,000
  147. Description Amount of liability associated with derivative assets, securities purchased under agreements to resell and securities borrowed.
    Fact DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedLiability
    Frame CY2017Q1I
    Label Derivative Asset, Securities Purchased under Agreements to Resell, Securities Borrowed, Liability
    Taxonomy us-gaap
    Unit USD
    Val 43,555,000,000
  148. Description Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.
    Fact CommonStockSharesIssued
    Frame CY2017Q1I
    Label Common Stock, Shares, Issued
    Taxonomy us-gaap
    Unit shares
    Val 503,879,642
  149. Description Amount of expense related to estimated loss from loan and lease transactions.
    Fact ProvisionForLoanAndLeaseLosses
    Label Provision for Loan and Lease Losses
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -2,000,000
  150. Description Amount of cash inflow from maturity, prepayment and call of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).
    Fact ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities
    Label Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-sale
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 6,836,000,000
  151. Description Interest income derived from securities purchased under agreements to resell. The difference in the price at which the institution buys the securities and resells the securities represents interest for the use of the funds by the other party. Most repurchase and sale agreements involve obligations of the federal government or its agencies, but other financial instruments, such as commercial paper, banker's acceptances and negotiable certificates of deposits are sometimes used in such transactions.
    Fact InterestIncomeSecuritiesPurchasedUnderAgreementsToResell
    Label Interest Income, Securities Purchased under Agreements to Resell
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 46,000,000
  152. 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 CY2017Q1I
    Label Derivative Liability, Fair Value, Gross Liability
    Taxonomy us-gaap
    Unit USD
    Val 9,394,000,000
  153. Description Amount of investment in debt security measured at amortized cost (held-to-maturity).
    Fact HeldToMaturitySecurities
    Frame CY2017Q1I
    Label Debt Securities, Held-to-maturity
    Taxonomy us-gaap
    Unit USD
    Val 35,829,000,000
  154. Description Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.
    Fact AllowanceForLoanAndLeaseLossesWriteOffs
    Frame CY2017Q1
    Label Allowance for Loan and Lease Losses, Write-offs
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  155. 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 CY2017Q1I
    Label Liabilities
    Taxonomy us-gaap
    Unit USD
    Val 215,508,000,000
  156. Description Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the par value method.
    Fact TreasuryStockValueAcquiredParValueMethod
    Label Treasury Stock, Value, Acquired, Par Value Method
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 523,000,000
  157. 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 CY2017Q1I
    Label Assets
    Taxonomy us-gaap
    Unit USD
    Val 236,802,000,000
  158. Description Interest income derived from funds deposited with both domestic and foreign financial institutions including funds in money market and other accounts.
    Fact InterestIncomeDepositsWithFinancialInstitutions
    Label Interest Income, Deposits with Financial Institutions
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 34,000,000
  159. Description Amount of transfers of assets measured on a recurring basis out of Level 2 of the fair value hierarchy into Level 1.
    Fact FairValueAssetsLevel2ToLevel1TransfersAmount
    Frame CY2017Q1I
    Label Fair Value, Assets, Level 2 to Level 1 Transfers, Amount
    Taxonomy us-gaap
    Unit USD
    Val 9,000,000
  160. 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 2017-01-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 1.17
  161. Description The expense in the period incurred with respect to protection provided by insurance entities against risks other than risks associated with production (which are allocated to cost of sales).
    Fact GeneralInsuranceExpense
    Label General Insurance Expense
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 30,000,000
  162. Description Amount of foreign currency translation gain (loss) which increases (decreases) assets, excluding financial assets and goodwill, lacking physical substance with a finite life.
    Fact FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss
    Frame CY2017Q1
    Label Finite Lived Intangible Assets, Foreign Currency Translation Gain (Loss)
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 7,000,000
  163. Description Fair value, after offset of derivative liability, 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, before offset against an obligation to return collateral under a master netting arrangement. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.
    Fact DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral
    Frame CY2017Q1I
    Label Derivative Asset, Fair Value, Amount Not Offset Against Collateral
    Taxonomy us-gaap
    Unit USD
    Val 3,016,000,000
  164. 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 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 502,000,000
  165. Description For banks and other depository institutions: Includes cash on hand (currency and coin), cash items in process of collection, noninterest bearing deposits due from other financial institutions (including corporate credit unions), and noninterest bearing balances with the Federal Reserve Banks, Federal Home Loan Banks and central banks.
    Fact CashAndDueFromBanks
    Label Cash and Due from Banks
    Taxonomy us-gaap
    Unit USD
    Val 2,909,000,000
  166. Description Amount of expense classified as other.
    Fact OtherExpenses
    Label Other Expenses
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 151,000,000
  167. Description Amount of increase (decrease) in operating liabilities classified as other.
    Fact IncreaseDecreaseInOtherOperatingLiabilities
    Label Increase (Decrease) in Other Operating Liabilities
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,908,000,000
  168. Description Amount of gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3).
    Fact FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1
    Label Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -6,000,000
  169. Description Amount of transfers of liabilities measured on a recurring basis out of Level 2 of the fair value hierarchy into Level 1.
    Fact FairValueLiabilitiesLevel2ToLevel1TransfersAmount
    Frame CY2017Q1I
    Label Fair Value, Liabilities, Level 2 to Level 1 Transfers, Amount
    Taxonomy us-gaap
    Unit USD
    Val 0
  170. 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 CY2017Q1I
    Label Treasury Stock, Value
    Taxonomy us-gaap
    Unit USD
    Val 8,159,000,000
  171. Description Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business.
    Fact AccountsReceivableNet
    Frame CY2017Q1I
    Label Accounts Receivable, after Allowance for Credit Loss
    Taxonomy us-gaap
    Unit USD
    Val 317,000,000
  172. Description This item represents the aggregate fair value of investments in debt and equity securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for twelve months or longer.
    Fact AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue
    Frame CY2017Q1I
    Label Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value
    Taxonomy us-gaap
    Unit USD
    Val 5,959,000,000
  173. Description The cash outflow to reacquire common stock during the period.
    Fact PaymentsForRepurchaseOfCommonStock
    Label Payments for Repurchase of Common Stock
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 354,000,000
  174. Description Ratio of minimum Tier 1 leverage capital to average assets required for capital adequacy as defined by regulatory framework.
    Fact TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets
    Frame CY2017Q1I
    Label Banking Regulation, Tier One Leverage Capital Ratio, Capital Adequacy, Minimum
    Taxonomy us-gaap
    Unit pure
    Val 0.04
  175. Description Amount of fees and commissions from banking, advisory, brokerage, and securities underwriting activities. Activities include, but are not limited to, underwriting securities, private placements of securities, investment advisory and management services, merger and acquisition services, sale and servicing of mutual funds, and other related consulting fees.
    Fact InvestmentBankingAdvisoryBrokerageAndUnderwritingFeesAndCommissions
    Label Investment Banking, Advisory, Brokerage, and Underwriting Fees and Commissions
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 133,000,000
  176. Description Fair value of investment in debt security measured at amortized cost (held-to-maturity), in continuous unrealized loss position for less than 12 months.
    Fact HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue
    Frame CY2017Q1I
    Label Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value
    Taxonomy us-gaap
    Unit USD
    Val 16,239,000,000
  177. Description The cash outflow to acquire debt and equity securities not classified as either held-to-maturity securities or trading securities which would be classified as available-for-sale securities and reported at fair value, with unrealized gains and losses excluded from earnings and reported in a separate component of shareholders' equity.
    Fact PaymentsToAcquireAvailableForSaleSecurities
    Label Payments to Acquire Available-for-sale Securities
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 6,287,000,000
  178. Description The carrying amount of a life insurance policy on an officer, executive or employee for which the reporting entity (a bank) is entitled to proceeds from the policy upon death of the insured or surrender of the insurance policy.
    Fact BankOwnedLifeInsurance
    Frame CY2017Q1I
    Label Bank Owned Life Insurance
    Taxonomy us-gaap
    Unit USD
    Val 3,176,000,000
  179. Description Amount of increase (decrease) of investment in debt and equity securities, measured at fair value with changes in fair value recognized in net income.
    Fact IncreaseDecreaseInTradingSecurities
    Label Increase (Decrease) in Debt Securities, Trading, and Equity Securities, FV-NI
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -79,000,000
  180. Description Total aggregate amount of all noninterest expense.
    Fact NoninterestExpense
    Label Noninterest Expense
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 2,086,000,000
  181. Description Amount of paid and unpaid preferred stock dividends declared with the form of settlement in cash.
    Fact DividendsPreferredStockCash
    Label Dividends, Preferred Stock, Cash
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 55,000,000
  182. Description This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.
    Fact AvailableForSaleSecuritiesAmortizedCost
    Frame CY2017Q1I
    Label Available-for-sale Securities, Amortized Cost Basis
    Taxonomy us-gaap
    Unit USD
    Val 58,658,000,000
  183. Description The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.
    Fact WeightedAverageNumberOfDilutedSharesOutstanding
    Label Weighted Average Number of Shares Outstanding, Diluted
    Start 2017-01-01
    Taxonomy us-gaap
    Unit shares
    Val 386,417,000
  184. Description Amount, after tax and reclassification adjustment, of (increase) decrease in accumulated other comprehensive income for defined benefit plan.
    Fact OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax
    Label Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -6,000,000
  185. 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 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 650,000,000
  186. Description Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.
    Fact DividendsCommonStockCash
    Label Dividends, Common Stock, Cash
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 144,000,000
  187. Description Amount of securities, mortgage loans, or other financial instruments pledged as collateral for deposits.
    Fact DepositLiabilitiesCollateralIssuedFinancialInstruments
    Frame CY2017Q1I
    Label Deposit Liabilities, Collateral Issued, Financial Instruments
    Taxonomy us-gaap
    Unit USD
    Val 586,000,000
  188. Description Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in sixth through tenth 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 AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue
    Frame CY2017Q1I
    Label Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10
    Taxonomy us-gaap
    Unit USD
    Val 14,486,000,000
  189. 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 CY2017Q1I
    Label Derivative Asset, Fair Value, Gross Liability
    Taxonomy us-gaap
    Unit USD
    Val 6,154,000,000
  190. 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 21,294,000,000
  191. Description Fair value of the collateral, or portion thereof, that has been re-pledged, delivered, or otherwise used.
    Fact FairValueOfSecuritiesReceivedAsCollateralThatHaveBeenResoldOrRepledged
    Frame CY2017Q1I
    Label Fair Value of Securities Received as Collateral that Have Been Resold or Repledged
    Taxonomy us-gaap
    Unit USD
    Val 0
  192. Description Fair value of investment in debt security measured at amortized cost (held-to-maturity), in unrealized loss position.
    Fact HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue
    Frame CY2017Q1I
    Label Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value
    Taxonomy us-gaap
    Unit USD
    Val 17,851,000,000
  193. Description Amount of general expenses not normally included in Other Operating Costs and Expenses.
    Fact OtherGeneralExpense
    Label Other General Expense
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 86,000,000
  194. Description Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity.
    Fact CommonStockValue
    Frame CY2017Q1I
    Label Common Stock, Value, Issued
    Taxonomy us-gaap
    Unit USD
    Val 504,000,000
  195. Description Fair value of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing in next 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 HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue
    Frame CY2017Q1I
    Label Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, Year One
    Taxonomy us-gaap
    Unit USD
    Val 1,641,000,000
  196. Description Unpaid principal balance of impaired financing receivables for which there is a related allowance for credit losses.
    Fact ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance
    Frame CY2017Q1I
    Label Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance
    Taxonomy us-gaap
    Unit USD
    Val 15,000,000
  197. Description Amount of increase (decrease) in receivables classified as other.
    Fact IncreaseDecreaseInOtherReceivables
    Label Increase (Decrease) in Other Receivables
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 46,000,000
  198. Description Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).
    Fact AvailableForSaleSecuritiesDebtSecurities
    Frame CY2017Q1I
    Label Debt Securities, Available-for-sale
    Taxonomy us-gaap
    Unit USD
    Val 58,324,000,000
  199. Description This item represents reductions in the cumulative amount of credit losses recognized in earnings for an other than temporary impairment (OTTI) of a debt security because of the sale of impaired securities during the period.
    Fact OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesSold
    Frame CY2017Q1
    Label Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions, Securities Sold
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  200. Description Carrying amount due within one year of the balance sheet date (or one operating cycle, if longer) from tax authorities as of the balance sheet date representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes.
    Fact IncomeTaxesReceivable
    Frame CY2017Q1I
    Label Income Taxes Receivable, Current
    Taxonomy us-gaap
    Unit USD
    Val 155,000,000
  201. Description Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.
    Fact NetCashProvidedByUsedInOperatingActivities
    Label Net Cash Provided by (Used in) Operating Activities
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 3,509,000,000
  202. Description Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.
    Fact FiniteLivedIntangibleAssetsGross
    Frame CY2017Q1I
    Label Finite-Lived Intangible Assets, Gross
    Taxonomy us-gaap
    Unit USD
    Val 3,356,000,000
  203. Description Amount of allowance for credit losses related to recorded investment.
    Fact ImpairedFinancingReceivableRelatedAllowance
    Frame CY2017Q1I
    Label Impaired Financing Receivable, Related Allowance
    Taxonomy us-gaap
    Unit USD
    Val 0
  204. Description Fair value of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing in sixth through tenth 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 HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue
    Frame CY2017Q1I
    Label Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10
    Taxonomy us-gaap
    Unit USD
    Val 3,270,000,000
  205. 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 CY2017Q1I
    Label Accumulated Other Comprehensive Income (Loss), Net of Tax
    Taxonomy us-gaap
    Unit USD
    Val -1,805,000,000
  206. Description Amount, before effects of master netting arrangements, of securities loaned to entities in exchange for collateral. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.
    Fact SecuritiesLoanedGross
    Frame CY2017Q1I
    Label Securities Loaned, Gross
    Taxonomy us-gaap
    Unit USD
    Val 10,124,000,000
  207. 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 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 2,668,000,000
  208. Description Amount of foreign interest-bearing deposits held by the entity.
    Fact InterestBearingDepositLiabilitiesForeign
    Frame CY2017Q1I
    Label Interest-bearing Deposit Liabilities, Foreign
    Taxonomy us-gaap
    Unit USD
    Val 99,933,000,000
  209. Description Amount of settlement of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.
    Fact FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements
    Label Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 295,000,000
  210. 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 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 110,000,000
  211. Description Amount of cash outflow to acquire investments classified as other.
    Fact PaymentsToAcquireOtherInvestments
    Label Payments to Acquire Other Investments
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 18,000,000
  212. 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
    Frame CY2017Q1
    Label Number of Reportable Segments
    Start 2017-01-01
    Taxonomy us-gaap
    Unit line_of_business
    Val 2
  213. Description Amount of obligation to return cash collateral under master netting arrangements that have not been offset against derivative assets, securities purchased under agreements to resell and securities borrowed.
    Fact DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedCollateralObligationToReturnCash
    Frame CY2017Q1I
    Label Derivative Asset, Securities Purchased under Agreements to Resell, Securities Borrowed, Collateral, Obligation to Return Cash
    Taxonomy us-gaap
    Unit USD
    Val 24,762,000,000
  214. Description The aggregate amount of all domestic and foreign noninterest-bearing deposits liabilities held by the entity.
    Fact NoninterestBearingDepositLiabilities
    Frame CY2017Q1I
    Label Noninterest-bearing Deposit Liabilities
    Taxonomy us-gaap
    Unit USD
    Val 56,786,000,000
  215. Description Amount, after effects of master netting arrangements, of derivative liabilities, securities sold under agreements to repurchase and securities loaned offset against a right to receive collateral. Includes liabilities not subject to a master netting arrangement and not elected to be offset.
    Fact DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedAmountOffsetAgainstCollateral
    Frame CY2017Q1I
    Label Derivative Liability, Securities Sold under Agreements to Repurchase, Securities Loaned, Amount Offset Against Collateral
    Taxonomy us-gaap
    Unit USD
    Val 6,147,000,000
  216. Description The maximum number of common shares permitted to be issued by an entity's charter and bylaws.
    Fact CommonStockSharesAuthorized
    Frame CY2017Q1I
    Label Common Stock, Shares Authorized
    Taxonomy us-gaap
    Unit shares
    Val 750,000,000
  217. Description Amount of increase (decrease) in operating assets classified as other.
    Fact IncreaseDecreaseInOtherOperatingAssets
    Label Increase (Decrease) in Other Operating Assets
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,606,000,000
  218. Description Amount after tax, before reclassification adjustments, of other comprehensive income (loss), attributable to parent.
    Fact OciBeforeReclassificationsNetOfTaxAttributableToParent
    Frame CY2017Q1
    Label OCI, before Reclassifications, Net of Tax, Attributable to Parent
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 253,000,000
  219. Description The net cash inflow or outflow in Interest-bearing Deposits by banks in other financial institutions for relatively short periods of time including, for example, certificates of deposits.
    Fact ProceedsFromPaymentsForInInterestBearingDepositsInBanks
    Label Proceeds from (Payments for) in Interest-bearing Deposits in Banks
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 4,146,000,000
  220. Description Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.
    Fact FiniteLivedIntangibleAssetsAccumulatedAmortization
    Frame CY2017Q1I
    Label Finite-Lived Intangible Assets, Accumulated Amortization
    Taxonomy us-gaap
    Unit USD
    Val 1,646,000,000
  221. Description Amount, after tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit).
    Fact AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax
    Frame CY2017Q1I
    Label Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax
    Taxonomy us-gaap
    Unit USD
    Val 188,000,000

Facts up to 2016-12-31

  1. Description The amount of securities on deposit with clearing organizations and other entities which provide services necessary to operations of the Company. This item would include, for instance, securities advanced as refundable collateral for securities borrowed.
    Fact DepositsWithClearingOrganizationsAndOthersSecurities
    Label Deposits with Clearing Organizations and Others, Securities
    Taxonomy us-gaap
    Unit USD
    Val 132,000,000
  2. Description Accumulated adjustment, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains or losses.
    Fact AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax
    Label Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax
    Taxonomy us-gaap
    Unit USD
    Val -1,875,000,000
  3. Description Amount of asset associated with derivative liabilities, securities sold under agreements to repurchase and securities loaned.
    Fact DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedAsset
    Label Derivative Liability, Securities Sold under Agreements to Repurchase, Securities Loaned, Asset
    Taxonomy us-gaap
    Unit USD
    Val 46,199,000,000
  4. Description Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.
    Fact FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue
    Label Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value
    Taxonomy us-gaap
    Unit USD
    Val 1,345,000,000
  5. 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 4,400,000,000
  6. 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 5,814,000,000
  7. 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 16,552,000,000
  8. Description Amount of accumulated unrecognized gain on investment in debt security measured at amortized cost (held-to-maturity).
    Fact HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain
    Label Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain
    Taxonomy us-gaap
    Unit USD
    Val 160,000,000
  9. Description Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale that have been in a continuous loss position for less than twelve months.
    Fact AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
    Label Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss
    Taxonomy us-gaap
    Unit USD
    Val 308,000,000
  10. Description Amount of increase (decrease) from foreign currency translation adjustments and purchase accounting adjustments 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 GoodwillTranslationAndPurchaseAccountingAdjustments
    Label Goodwill, Translation and Purchase Accounting Adjustments
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val -82,000,000
  11. Description Ratio of minimum total risk-based capital to risk-weighted assets required for capital adequacy as defined by regulatory framework.
    Fact CapitalRequiredForCapitalAdequacyToRiskWeightedAssets
    Label Banking Regulation, Total Risk-Based Capital Ratio, Capital Adequacy, Minimum
    Taxonomy us-gaap
    Unit pure
    Val 0.09
  12. Description Ratio of minimum Tier 1 risk-based capital to risk-weighted assets required for capital adequacy as defined by regulatory framework.
    Fact TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets
    Label Banking Regulation, Tier One Risk-Based Capital Ratio, Capital Adequacy, Minimum
    Taxonomy us-gaap
    Unit pure
    Val 0.07
  13. Description Number of financing receivables that have been modified by troubled debt restructurings.
    Fact FinancingReceivableModificationsNumberOfContracts2
    Label Financing Receivable, Modifications, Number of Contracts
    Start 2016-01-01
    Taxonomy us-gaap
    Unit loan
    Val 0
  14. Description Fair value of investment in debt security measured at amortized cost (held-to-maturity), in continuous unrealized loss position for 12 months or longer.
    Fact HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue
    Label Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value
    Taxonomy us-gaap
    Unit USD
    Val 1,899,000,000
  15. Description Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.
    Fact TreasuryStockShares
    Label Treasury Stock, Shares
    Taxonomy us-gaap
    Unit shares
    Val 121,940,502
  16. 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 10,682,000,000
  17. 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 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 207,000,000
  18. Description Amount of investment in debt security measured at fair value with change in fair value recognized in net income (trading) and investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).
    Fact TradingSecurities
    Label Debt Securities, Trading, and Equity Securities, FV-NI
    Taxonomy us-gaap
    Unit USD
    Val 1,024,000,000
  19. Description Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.
    Fact RestructuringReserve
    Label Restructuring Reserve
    Taxonomy us-gaap
    Unit USD
    Val 56,000,000
  20. Description Sum of the carrying amounts as of the date of the latest financial statement presented of securities which are owned but transferred to another party to serve as collateral to partially or fully secure a debt obligation, repurchase agreement or other current or potential obligation, and for which the transferee is not permitted to sell or re-pledge them to an unrelated party.
    Fact PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesPledged
    Label Pledged Financial Instruments, Not Separately Reported, Securities
    Taxonomy us-gaap
    Unit USD
    Val 46,000,000,000
  21. Description Fair value, after effects of master netting arrangements, 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. Includes assets not subject to a master netting arrangement and not elected to be offset.
    Fact DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral
    Label Derivative Asset, Fair Value, Amount Offset Against Collateral
    Taxonomy us-gaap
    Unit USD
    Val 7,074,000,000
  22. 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 1,750,000,000
  23. 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 21,219,000,000
  24. Description Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.
    Fact FinancingReceivableAllowanceForCreditLosses
    Label Financing Receivable, Allowance for Credit Loss
    Taxonomy us-gaap
    Unit USD
    Val 53,000,000
  25. Description Amount, after effects of master netting arrangements, of derivative assets, securities purchased under agreements to resell and securities borrowed offset against an obligation to return collateral under a master netting arrangement. Includes assets not subject to a master netting arrangement and not elected to be offset.
    Fact DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedAmountOffsetAgainstCollateral
    Label Derivative Asset, Securities Purchased under Agreements to Resell, Securities Borrowed, Amount Offset Against Collateral
    Taxonomy us-gaap
    Unit USD
    Val 7,295,000,000
  26. 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 2,062,000,000
  27. Description Amount, before effects of master netting arrangements, of derivative liabilities, securities sold under agreements to repurchase and securities loaned. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.
    Fact DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedGross
    Label Derivative Liability, Securities Sold under Agreements to Repurchase, Securities Loaned, Gross
    Taxonomy us-gaap
    Unit USD
    Val 61,617,000,000
  28. Description Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity), in unrealized loss position.
    Fact HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss
    Label Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss
    Taxonomy us-gaap
    Unit USD
    Val 335,000,000
  29. Description Amount of unrecognized tax benefits.
    Fact UnrecognizedTaxBenefits
    Label Unrecognized Tax Benefits
    Taxonomy us-gaap
    Unit USD
    Val 71,000,000
  30. Description Amount of assets classified as other.
    Fact OtherAssets
    Label Other Assets
    Taxonomy us-gaap
    Unit USD
    Val 38,328,000,000
  31. Description This item represents the aggregate fair value of investments in debt and equity securities in an unrealized loss position which are categorized neither as held-to-maturity nor trading securities.
    Fact AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue
    Label Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value
    Taxonomy us-gaap
    Unit USD
    Val 24,728,000,000
  32. Description For banks and other depository institutions (including Federal Reserve Banks, if applicable): Interest-bearing deposits in other financial institutions for relatively short periods of time including, for example, certificates of deposits, which are presented separately from cash on the balance sheet.
    Fact InterestBearingDepositsInBanks
    Label Interest-bearing Deposits in Banks and Other Financial Institutions
    Taxonomy us-gaap
    Unit USD
    Val 70,935,000,000
  33. Description Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.
    Fact LoansAndLeasesReceivableNetReportedAmount
    Label Loans and Leases Receivable, Net Amount
    Taxonomy us-gaap
    Unit USD
    Val 19,704,000,000
  34. Description Amount of right to receive cash collateral under master netting arrangements that have not been offset against derivative liabilities, securities sold under agreements to repurchase and securities loaned.
    Fact DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedCollateralRightToReclaimCash
    Label Derivative Liability, Securities Sold under Agreements to Repurchase, Securities Loaned, Collateral, Right to Reclaim Cash
    Taxonomy us-gaap
    Unit USD
    Val 7,239,000,000
  35. Description Face amount per share of no-par value preferred stock nonredeemable or redeemable solely at the option of the issuer.
    Fact PreferredStockNoParValue
    Label Preferred Stock, No Par Value
    Taxonomy us-gaap
    Unit USD/shares
    Val 0
  36. Description Carrying amount as of the balance sheet date of loans that have been pledged as collateral for borrowings. If the secured party has the right by contract or custom to sell or re-pledge the collateral, then the debtor reclassifies that asset and report that asset in its statement of financial position separately from other assets not so encumbered.
    Fact LoansPledgedAsCollateral
    Label Loans Pledged as Collateral
    Taxonomy us-gaap
    Unit USD
    Val 1,500,000,000
  37. Description Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale that have been in a continuous loss position for twelve months or longer.
    Fact AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
    Label Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss
    Taxonomy us-gaap
    Unit USD
    Val 177,000,000
  38. Description The carrying amount of the consolidated Variable Interest Entity's assets included in the reporting entity's statement of financial position.
    Fact VariableInterestEntityConsolidatedCarryingAmountAssets
    Label Variable Interest Entity, Consolidated, Carrying Amount, Assets (Deprecated 2020-01-31)
    Taxonomy us-gaap
    Unit USD
    Val 1,160,000,000
  39. Description Face amount or stated value per share of common stock.
    Fact CommonStockParOrStatedValuePerShare
    Label Common Stock, Par or Stated Value Per Share
    Taxonomy us-gaap
    Unit USD/shares
    Val 1
  40. Description Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.
    Fact PaymentsForRestructuring
    Label Payments for Restructuring
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 107,000,000
  41. Description Interest, dividends, rents, ancillary and other revenues earned but not yet received by the entity on its investments.
    Fact AccruedInvestmentIncomeReceivable
    Label Accrued Investment Income Receivable
    Taxonomy us-gaap
    Unit USD
    Val 2,644,000,000
  42. 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 3,333,000,000
  43. Description Amount of transfers of assets measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2.
    Fact FairValueAssetsLevel1ToLevel2TransfersAmount
    Label Fair Value, Assets, Level 1 to Level 2 Transfers, Amount
    Taxonomy us-gaap
    Unit USD
    Val 0
  44. Description Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity), in continuous loss position for 12 months or longer.
    Fact HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
    Label Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss
    Taxonomy us-gaap
    Unit USD
    Val 42,000,000
  45. Description The cumulative amount of credit losses recognized in earnings related to debt securities held for which a portion of an other than temporary impairment (OTTI) was recognized in other comprehensive income (a component of shareholders' equity).
    Fact OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld
    Label Other than Temporary Impairment, Credit Losses Recognized in Earnings, Credit Losses on Debt Securities Held
    Taxonomy us-gaap
    Unit USD
    Val 66,000,000
  46. 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 242,698,000,000
  47. Description Accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses.
    Fact AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax
    Label Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax
    Taxonomy us-gaap
    Unit USD
    Val 229,000,000
  48. Description Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities.
    Fact AccruedLiabilitiesCurrentAndNoncurrent
    Label Accrued Liabilities
    Taxonomy us-gaap
    Unit USD
    Val 16,901,000,000
  49. Description Amount of borrowings classified as other, maturing within one year or the normal operating cycle, if longer.
    Fact OtherShortTermBorrowings
    Label Other Short-term Borrowings
    Taxonomy us-gaap
    Unit USD
    Val 1,585,000,000
  50. Description Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity), in continuous loss position for less than 12 months.
    Fact HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
    Label Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss
    Taxonomy us-gaap
    Unit USD
    Val 293,000,000
  51. Description Amount, before 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 elected not to be offset. Excludes liabilities not subject to a master netting arrangement.
    Fact SecuritiesSoldUnderAgreementsToRepurchaseGross
    Label Securities Sold under Agreements to Repurchase, Gross
    Taxonomy us-gaap
    Unit USD
    Val 35,509,000,000
  52. 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 17,459,000,000
  53. Description Amount of divestiture 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 GoodwillWrittenOffRelatedToSaleOfBusinessUnit
    Label Goodwill, Written off Related to Sale of Business Unit
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 11,000,000
  54. 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 2,363,000,000
  55. Description Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.
    Fact AvailableForSaleSecurities
    Label Available-for-sale Securities
    Taxonomy us-gaap
    Unit USD
    Val 61,998,000,000
  56. Description Amount of other miscellaneous assets.
    Fact OtherAssetsMiscellaneous
    Label Other Assets, Miscellaneous
    Taxonomy us-gaap
    Unit USD
    Val 339,000,000
  57. Description This item represents the aggregate fair value of investments in debt and equity securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for less than twelve months.
    Fact AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue
    Label Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value
    Taxonomy us-gaap
    Unit USD
    Val 16,928,000,000
  58. Description Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.
    Fact AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
    Label Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax
    Taxonomy us-gaap
    Unit USD
    Val 485,000,000
  59. Description Amount, after tax, of accumulated unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).
    Fact AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax
    Label AOCI, Debt Securities, Available-for-sale, Adjustment, after Tax
    Taxonomy us-gaap
    Unit USD
    Val -225,000,000
  60. Description Fair value, after effects of master netting arrangements, 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. Includes liabilities not subject to a master netting arrangement and not elected to be offset.
    Fact DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral
    Label Derivative Liability, Fair Value, Amount Offset Against Collateral
    Taxonomy us-gaap
    Unit USD
    Val 5,822,000,000
  61. Description Carrying amount as of the balance sheet date of expenditures made in advance of when the economic benefit of the cost will be realized, and which will be expensed in future periods with the passage of time or when a triggering event occurs.
    Fact PrepaidExpenseCurrentAndNoncurrent
    Label Prepaid Expense
    Taxonomy us-gaap
    Unit USD
    Val 333,000,000
  62. Description Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.
    Fact AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
    Label Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax
    Taxonomy us-gaap
    Unit USD
    Val 427,000,000
  63. Description Amount of investment in impaired financing receivables for which there is a related allowance for credit losses.
    Fact ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
    Frame CY2016Q4I
    Label Impaired Financing Receivable, with Related Allowance, Recorded Investment
    Taxonomy us-gaap
    Unit USD
    Val 15,000,000
  64. Description Total amount of interest-bearing domestic deposit liabilities, which may include brokered, retail, demand, checking, notice of withdrawal, money market and other interest-bearing deposits.
    Fact InterestBearingDepositLiabilitiesDomestic
    Label Interest-bearing Deposit Liabilities, Domestic
    Taxonomy us-gaap
    Unit USD
    Val 30,911,000,000
  65. Description Amount, after the effects of master netting arrangements, of funds outstanding loaned in the form of a security resale agreement between the entity and another party for the purchase and resale of identical or substantially the same securities at a date certain for a specified price. Includes purchases of participations in pools of securities that are subject to a resale agreement, assets not subject to a master netting arrangement and not elected to be offset.
    Fact SecuritiesPurchasedUnderAgreementsToResell
    Label Securities Purchased under Agreements to Resell
    Taxonomy us-gaap
    Unit USD
    Val 1,956,000,000
  66. Description The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.
    Fact PreferredStockSharesAuthorized
    Label Preferred Stock, Shares Authorized
    Taxonomy us-gaap
    Unit shares
    Val 3,500,000
  67. Description Amount of long-term debt and lease obligation, including portion classified as current.
    Fact LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities
    Label Long-term Debt and Lease Obligation, Including Current Maturities
    Taxonomy us-gaap
    Unit USD
    Val 11,430,000,000
  68. 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 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 236,000,000
  69. Description Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.
    Fact FinitelivedIntangibleAssetsAcquired1
    Label Finite-lived Intangible Assets Acquired
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 217,000,000
  70. Description Amount, before effects of master netting arrangements, of derivative assets, securities purchased under agreements to resell and securities borrowed. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.
    Fact DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedGross
    Label Derivative Asset, Securities Purchased under Agreements to Resell, Securities Borrowed, Gross
    Taxonomy us-gaap
    Unit USD
    Val 75,229,000,000
  71. Description Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.
    Fact LoansAndLeasesReceivableAllowance
    Label Loans and Leases Receivable, Allowance
    Taxonomy us-gaap
    Unit USD
    Val 53,000,000
  72. Description Amount of transfers of liabilities measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2.
    Fact FairValueLiabilitiesLevel1ToLevel2TransfersAmount
    Label Fair Value, Liabilities, Level 1 to Level 2 Transfers, Amount
    Taxonomy us-gaap
    Unit USD
    Val 0
  73. Description Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting.
    Fact DeferredTaxAssetsLiabilitiesNet
    Label Deferred Tax Assets, Net
    Taxonomy us-gaap
    Unit USD
    Val 210,000,000
  74. Description Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders. Includes adjustments to additional paid in capital. Some examples of such adjustments include recording the issuance of debt with a beneficial conversion feature and certain tax consequences of equity instruments awarded to employees. Use this element for the aggregate amount of additional paid-in capital associated with common and preferred stock. For additional paid-in capital associated with only common stock, use the element additional paid in capital, common stock. For additional paid-in capital associated with only preferred stock, use the element additional paid in capital, preferred stock.
    Fact AdditionalPaidInCapital
    Label Additional Paid in Capital
    Taxonomy us-gaap
    Unit USD
    Val 9,782,000,000
  75. Description Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale in a continuous loss position.
    Fact AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss
    Label Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss
    Taxonomy us-gaap
    Unit USD
    Val 485,000,000
  76. Description Fair value, after offset of derivative asset, 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 and before offset against a right to receive collateral under a master netting arrangement. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.
    Fact DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral
    Label Derivative Liability, Fair Value, Amount Not Offset Against Collateral
    Taxonomy us-gaap
    Unit USD
    Val 6,002,000,000
  77. Description Fair value of investment in debt security measured at amortized cost (held-to-maturity).
    Fact HeldToMaturitySecuritiesFairValue
    Label Debt Securities, Held-to-maturity, Fair Value
    Taxonomy us-gaap
    Unit USD
    Val 34,994,000,000
  78. Description Amount of additional cost recognized for award under share-based payment arrangement from occurrence of event accelerating recognition of cost.
    Fact ShareBasedCompensationArrangementByShareBasedPaymentAwardAcceleratedCompensationCost
    Label Share-based Payment Arrangement, Accelerated Cost
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 249,000,000
  79. Description The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others.
    Fact Deposits
    Label Deposits
    Taxonomy us-gaap
    Unit USD
    Val 187,163,000,000
  80. Description Fair value of collateral permitted, by contact or custom, to be sold or re-pledged.
    Fact FairValueOfSecuritiesReceivedAsCollateralThatCanBeResoldOrRepledged
    Label Fair Value of Securities Received as Collateral that Can be Resold or Repledged
    Taxonomy us-gaap
    Unit USD
    Val 1,770,000,000
  81. Description Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity).
    Fact HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss
    Label Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss
    Taxonomy us-gaap
    Unit USD
    Val 335,000,000
  82. Description Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.
    Fact LoansAndLeasesReceivableGrossCarryingAmount
    Label Loans and Leases Receivable, Gross
    Taxonomy us-gaap
    Unit USD
    Val 19,757,000,000
  83. Description Amount of liability associated with derivative assets, securities purchased under agreements to resell and securities borrowed.
    Fact DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedLiability
    Label Derivative Asset, Securities Purchased under Agreements to Resell, Securities Borrowed, Liability
    Taxonomy us-gaap
    Unit USD
    Val 44,748,000,000
  84. Description Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.
    Fact CommonStockSharesIssued
    Label Common Stock, Shares, Issued
    Taxonomy us-gaap
    Unit shares
    Val 503,879,642
  85. 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 16,684,000,000
  86. Description Amount of investment in debt security measured at amortized cost (held-to-maturity).
    Fact HeldToMaturitySecurities
    Label Debt Securities, Held-to-maturity
    Taxonomy us-gaap
    Unit USD
    Val 35,169,000,000
  87. 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 221,479,000,000
  88. 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 242,698,000,000
  89. Description Amount of transfers of assets measured on a recurring basis out of Level 2 of the fair value hierarchy into Level 1.
    Fact FairValueAssetsLevel2ToLevel1TransfersAmount
    Label Fair Value, Assets, Level 2 to Level 1 Transfers, Amount
    Taxonomy us-gaap
    Unit USD
    Val 0
  90. Description Amount of foreign currency translation gain (loss) which increases (decreases) assets, excluding financial assets and goodwill, lacking physical substance with a finite life.
    Fact FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss
    Label Finite Lived Intangible Assets, Foreign Currency Translation Gain (Loss)
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val -20,000,000
  91. Description Fair value, after offset of derivative liability, 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, before offset against an obligation to return collateral under a master netting arrangement. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.
    Fact DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral
    Label Derivative Asset, Fair Value, Amount Not Offset Against Collateral
    Taxonomy us-gaap
    Unit USD
    Val 7,321,000,000
  92. Description For banks and other depository institutions: Includes cash on hand (currency and coin), cash items in process of collection, noninterest bearing deposits due from other financial institutions (including corporate credit unions), and noninterest bearing balances with the Federal Reserve Banks, Federal Home Loan Banks and central banks.
    Fact CashAndDueFromBanks
    Label Cash and Due from Banks
    Taxonomy us-gaap
    Unit USD
    Val 1,314,000,000
  93. Description Amount of transfers of liabilities measured on a recurring basis out of Level 2 of the fair value hierarchy into Level 1.
    Fact FairValueLiabilitiesLevel2ToLevel1TransfersAmount
    Label Fair Value, Liabilities, Level 2 to Level 1 Transfers, Amount
    Taxonomy us-gaap
    Unit USD
    Val 0
  94. 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 7,682,000,000
  95. Description Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business.
    Fact AccountsReceivableNet
    Label Accounts Receivable, after Allowance for Credit Loss
    Taxonomy us-gaap
    Unit USD
    Val 886,000,000
  96. Description This item represents the aggregate fair value of investments in debt and equity securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for twelve months or longer.
    Fact AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue
    Label Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value
    Taxonomy us-gaap
    Unit USD
    Val 7,800,000,000
  97. Description Ratio of minimum Tier 1 leverage capital to average assets required for capital adequacy as defined by regulatory framework.
    Fact TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets
    Label Banking Regulation, Tier One Leverage Capital Ratio, Capital Adequacy, Minimum
    Taxonomy us-gaap
    Unit pure
    Val 0.04
  98. Description Fair value of investment in debt security measured at amortized cost (held-to-maturity), in continuous unrealized loss position for less than 12 months.
    Fact HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue
    Label Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value
    Taxonomy us-gaap
    Unit USD
    Val 17,284,000,000
  99. Description The carrying amount of a life insurance policy on an officer, executive or employee for which the reporting entity (a bank) is entitled to proceeds from the policy upon death of the insured or surrender of the insurance policy.
    Fact BankOwnedLifeInsurance
    Label Bank Owned Life Insurance
    Taxonomy us-gaap
    Unit USD
    Val 3,158,000,000
  100. Description This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.
    Fact AvailableForSaleSecuritiesAmortizedCost
    Label Available-for-sale Securities, Amortized Cost Basis
    Taxonomy us-gaap
    Unit USD
    Val 62,056,000,000
  101. Description Amount of securities, mortgage loans, or other financial instruments pledged as collateral for deposits.
    Fact DepositLiabilitiesCollateralIssuedFinancialInstruments
    Label Deposit Liabilities, Collateral Issued, Financial Instruments
    Taxonomy us-gaap
    Unit USD
    Val 2,236,000,000
  102. 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 9,231,000,000
  103. 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 21,219,000,000
  104. Description Fair value of the collateral, or portion thereof, that has been re-pledged, delivered, or otherwise used.
    Fact FairValueOfSecuritiesReceivedAsCollateralThatHaveBeenResoldOrRepledged
    Label Fair Value of Securities Received as Collateral that Have Been Resold or Repledged
    Taxonomy us-gaap
    Unit USD
    Val 166,000,000
  105. Description Fair value of investment in debt security measured at amortized cost (held-to-maturity), in unrealized loss position.
    Fact HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue
    Label Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value
    Taxonomy us-gaap
    Unit USD
    Val 19,183,000,000
  106. Description Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity.
    Fact CommonStockValue
    Label Common Stock, Value, Issued
    Taxonomy us-gaap
    Unit USD
    Val 504,000,000
  107. Description Unpaid principal balance of impaired financing receivables for which there is a related allowance for credit losses.
    Fact ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance
    Frame CY2016Q4I
    Label Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance
    Taxonomy us-gaap
    Unit USD
    Val 15,000,000
  108. Description Carrying amount due within one year of the balance sheet date (or one operating cycle, if longer) from tax authorities as of the balance sheet date representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes.
    Fact IncomeTaxesReceivable
    Label Income Taxes Receivable, Current
    Taxonomy us-gaap
    Unit USD
    Val 106,000,000
  109. 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 3,413,000,000
  110. Description Amount of allowance for credit losses related to recorded investment.
    Fact ImpairedFinancingReceivableRelatedAllowance
    Frame CY2016Q4I
    Label Impaired Financing Receivable, Related Allowance
    Taxonomy us-gaap
    Unit USD
    Val 0
  111. 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 -2,040,000,000
  112. Description Amount, before effects of master netting arrangements, of securities loaned to entities in exchange for collateral. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.
    Fact SecuritiesLoanedGross
    Label Securities Loaned, Gross
    Taxonomy us-gaap
    Unit USD
    Val 9,424,000,000
  113. Description Amount of foreign interest-bearing deposits held by the entity.
    Fact InterestBearingDepositLiabilitiesForeign
    Label Interest-bearing Deposit Liabilities, Foreign
    Taxonomy us-gaap
    Unit USD
    Val 96,855,000,000
  114. Description Amount of obligation to return cash collateral under master netting arrangements that have not been offset against derivative assets, securities purchased under agreements to resell and securities borrowed.
    Fact DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedCollateralObligationToReturnCash
    Label Derivative Asset, Securities Purchased under Agreements to Resell, Securities Borrowed, Collateral, Obligation to Return Cash
    Taxonomy us-gaap
    Unit USD
    Val 23,186,000,000
  115. Description The aggregate amount of all domestic and foreign noninterest-bearing deposits liabilities held by the entity.
    Fact NoninterestBearingDepositLiabilities
    Label Noninterest-bearing Deposit Liabilities
    Taxonomy us-gaap
    Unit USD
    Val 59,397,000,000
  116. Description Amount, after effects of master netting arrangements, of derivative liabilities, securities sold under agreements to repurchase and securities loaned offset against a right to receive collateral. Includes liabilities not subject to a master netting arrangement and not elected to be offset.
    Fact DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedAmountOffsetAgainstCollateral
    Label Derivative Liability, Securities Sold under Agreements to Repurchase, Securities Loaned, Amount Offset Against Collateral
    Taxonomy us-gaap
    Unit USD
    Val 8,179,000,000
  117. Description The maximum number of common shares permitted to be issued by an entity's charter and bylaws.
    Fact CommonStockSharesAuthorized
    Label Common Stock, Shares Authorized
    Taxonomy us-gaap
    Unit shares
    Val 750,000,000
  118. 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 1,663,000,000
  119. Description Amount, after tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit).
    Fact AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax
    Label Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax
    Taxonomy us-gaap
    Unit USD
    Val 194,000,000

Facts up to 2016-03-31

  1. Description Amount of fees and commissions from financial services and banking activities and correspondent clearing. Includes fees from depositor accounts, credit cards, merchant discounts, and fiduciary and trust activities, guarantee fees, investment advisory, management, and administrative fees, transfer agent fees, and insurance commissions.
    Fact FeesAndCommissions
    Frame CY2016Q1
    Label Fees and Commissions (Deprecated 2018-01-31)
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,970,000,000
  2. Description Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.
    Fact RestructuringCharges
    Frame CY2016Q1
    Label Restructuring Charges
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 97,000,000
  3. Description Amount of cash (inflow) outflow from investing activities classified as other.
    Fact PaymentsForProceedsFromOtherInvestingActivities
    Frame CY2016Q1
    Label Payments for (Proceeds from) Other Investing Activities
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val -6,000,000
  4. Description The amount of net income (loss) for 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 EarningsPerShareDiluted
    Frame CY2016Q1
    Label Earnings Per Share, Diluted
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 0.79
  5. Description Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.
    Fact IncomeTaxExpenseBenefit
    Frame CY2016Q1
    Label Income Tax Expense (Benefit)
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 62,000,000
  6. Description Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.
    Fact FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue
    Label Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value
    Taxonomy us-gaap
    Unit USD
    Val 2,835,000,000
  7. Description The net amount of operating interest income (expense).
    Fact InterestIncomeExpenseNet
    Frame CY2016Q1
    Label Interest Income (Expense), Net
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 512,000,000
  8. 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 CY2016Q1
    Label Floor Brokerage, Exchange and Clearance Fees
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 200,000,000
  9. Description Amount after tax of reclassification adjustments of other comprehensive income (loss).
    Fact ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax
    Frame CY2016Q1
    Label Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val -4,000,000
  10. Description Amount after tax and reclassification adjustments of other comprehensive income (loss).
    Fact OtherComprehensiveIncomeLossNetOfTax
    Frame CY2016Q1
    Label Other Comprehensive Income (Loss), Net of Tax
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 478,000,000
  11. Description Amount of cash outflow through purchase of long-term held-to-maturity securities.
    Fact PaymentsToAcquireHeldToMaturitySecurities
    Frame CY2016Q1
    Label Payments to Acquire Held-to-maturity Securities
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,782,000,000
  12. Description Amount of cash inflow (outflow) from financing activities, including 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 NetCashProvidedByUsedInFinancingActivities
    Frame CY2016Q1
    Label Net Cash Provided by (Used in) Financing Activities
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val -8,351,000,000
  13. Description The cash inflow associated with the maturity, prepayments and calls (requests for early payments) of debt securities designated as held-to-maturity.
    Fact ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities
    Frame CY2016Q1
    Label Proceeds from Maturities, Prepayments and Calls of Held-to-maturity Securities
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 618,000,000
  14. Description Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.
    Fact DeferredIncomeTaxExpenseBenefit
    Frame CY2016Q1
    Label Deferred Income Tax Expense (Benefit)
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val -23,000,000
  15. Description Amount of paid and unpaid preferred stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK).
    Fact DividendsPreferredStock
    Frame CY2016Q1
    Label Dividends, Preferred Stock
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 49,000,000
  16. 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 CY2016Q1
    Label Net Income (Loss) Available to Common Stockholders, Basic
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 319,000,000
  17. Description Amount of increase (decrease) in deposit liabilities classified as other.
    Fact IncreaseDecreaseInOtherDeposits
    Frame CY2016Q1
    Label Increase (Decrease) in Other Deposits
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val -9,202,000,000
  18. 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
    Frame CY2016Q1
    Label Payments to Acquire Property, Plant, and Equipment
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 168,000,000
  19. 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 CY2016Q1
    Label Amortization of Intangible Assets
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 49,000,000
  20. 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 CY2016Q1
    Label Comprehensive Income (Loss), Net of Tax, Attributable to Parent
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 846,000,000
  21. Description The cash inflow from the sale of an investment interest in a joint venture that the reporting entity has not previously accounted for using consolidation or the equity method of accounting.
    Fact ProceedsFromDivestitureOfInterestInJointVenture
    Frame CY2016Q1
    Label Proceeds from Divestiture of Interest in Joint Venture
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  22. Description Amount of income (expense) included in net income that results in no cash inflow (outflow), classified as other.
    Fact OtherNoncashIncomeExpense
    Frame CY2016Q1
    Label Other Noncash Income (Expense)
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val -317,000,000
  23. Description Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.
    Fact FinancingReceivableAllowanceForCreditLosses
    Label Financing Receivable, Allowance for Credit Loss
    Taxonomy us-gaap
    Unit USD
    Val 47,000,000
  24. Description Amount of revenue from providing investment advisory, asset management and administrative services, including, but not limited to, distribution and shareholder services, accounting, tax, legal, regulatory filing, share registration, and shareholder correspondence activities.
    Fact InvestmentAdvisoryManagementAndAdministrativeFees
    Frame CY2016Q1
    Label Investment Advisory, Management and Administrative Fees (Deprecated 2018-01-31)
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 270,000,000
  25. Description Aggregate amount of interest paid or due on all long-term debt.
    Fact InterestExpenseLongTermDebt
    Frame CY2016Q1
    Label Interest Expense, Long-term Debt
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 61,000,000
  26. Description The total amount of proceeds received for the sale of securities, categorized neither as held-to-maturity nor trading securities, during the reporting period.
    Fact AvailableForSaleSecuritiesGrossRealizedGainsLossesSaleProceeds
    Frame CY2016Q1
    Label Available-for-sale Securities, Gross Realized Gains (Losses), Sale Proceeds (Deprecated 2018-01-31)
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 2,000,000
  27. Description Aggregate dividends declared during the period for each share of common stock outstanding.
    Fact CommonStockDividendsPerShareDeclared
    Frame CY2016Q1
    Label Common Stock, Dividends, Per Share, Declared
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 0.34
  28. Description The amount by which the fair value of an investment is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income.
    Fact ImpairmentOfInvestments
    Frame CY2016Q1
    Label Other than Temporary Impairment Losses, Investments
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,000,000
  29. 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 CY2016Q1
    Label Stockholders' Equity, Other
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,000,000
  30. Description Amount of expense for salary, wage, profit sharing; incentive and equity-based compensation; and other employee benefit.
    Fact LaborAndRelatedExpense
    Frame CY2016Q1
    Label Labor and Related Expense
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,107,000,000
  31. Description The cash inflow associated with the sale of debt and equity securities classified as available-for-sale securities.
    Fact ProceedsFromSaleOfAvailableForSaleSecurities
    Frame CY2016Q1
    Label Proceeds from Sale of Available-for-sale Securities
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 226,000,000
  32. 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 CY2016Q1
    Label Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 306,000,000
  33. Description Amount of cash inflow from realized tax benefit related to deductible compensation cost reported on the entity's tax return for equity instruments in excess of the compensation cost for those instruments recognized for financial reporting purposes.
    Fact ExcessTaxBenefitFromShareBasedCompensationFinancingActivities
    Frame CY2016Q1
    Label Excess Tax Benefit from Share-based Compensation, Financing Activities
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 3,000,000
  34. Description Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.
    Fact AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
    Frame CY2016Q1
    Label Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
    Start 2016-01-01
    Taxonomy us-gaap
    Unit shares
    Val 3,920,000
  35. Description Amount of unrealized and realized gain (loss) on investment in marketable security, including other-than-temporary impairment (OTTI).
    Fact MarketableSecuritiesGainLoss
    Frame CY2016Q1
    Label Marketable Securities, Gain (Loss)
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 2,000,000
  36. Description Net cash inflow (outflow) of time deposits.
    Fact IncreaseDecreaseInTimeDeposits
    Frame CY2016Q1
    Label Increase (Decrease) in Time Deposits
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 3,087,000,000
  37. Description Amount of fee and commission revenue classified as other.
    Fact FeesAndCommissionsOther
    Frame CY2016Q1
    Label Fees and Commissions, Other (Deprecated 2018-01-31)
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 52,000,000
  38. 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 CY2016Q1
    Label Professional Fees
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 93,000,000
  39. Description Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests.
    Fact PaymentsOfDividends
    Frame CY2016Q1
    Label Payments of Dividends
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 184,000,000
  40. Description The cumulative amount of credit losses recognized in earnings related to debt securities held for which a portion of an other than temporary impairment (OTTI) was recognized in other comprehensive income (a component of shareholders' equity).
    Fact OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld
    Frame CY2016Q1I
    Label Other than Temporary Impairment, Credit Losses Recognized in Earnings, Credit Losses on Debt Securities Held
    Taxonomy us-gaap
    Unit USD
    Val 91,000,000
  41. Description Amount of operating interest income, including amortization and accretion of premiums and discounts, on U.S. Treasury securities and other U.S. government securities.
    Fact InterestIncomeSecuritiesUSTreasuryAndOtherUSGovernment
    Frame CY2016Q1
    Label Interest Income, Securities, US Treasury and Other US Government
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 211,000,000
  42. Description Income from services rendered by trust departments or by any consolidated subsidiaries acting in a fiduciary capacity, including fees earned for (1) acting as an agent for fiduciary placement and loans and (2) custody or investment advisory services when such fees are not separately billed to the customer. This item excludes commissions and fees received for the accumulation or disbursement of funds deposited to Individual Retirement or Keogh plan accounts when such are not handled by the reporting entity's trust department.
    Fact FeesAndCommissionsFiduciaryAndTrustActivities
    Frame CY2016Q1
    Label Fees and Commissions, Fiduciary and Trust Activities (Deprecated 2018-01-31)
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,242,000,000
  43. Description The aggregate interest and fee income generated by: (1) loans the Entity has positive intent and ability to hold for the foreseeable future, or until maturity or payoff, including commercial and consumer loans, whether domestic or foreign, which may consist of: (a) industrial and agricultural; (b) real estate; and (c) real estate construction loans; (d) trade financing; (e) lease financing; (f) home equity lines-of-credit; (g) automobile and other vehicle loans; and (h) credit card and other revolving-type loans and (2) loans and leases held-for-sale which may include mortgage loans, direct financing, and sales-type leases.
    Fact InterestAndFeeIncomeLoansAndLeases
    Frame CY2016Q1
    Label Interest and Fee Income, Loans and Leases
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 91,000,000
  44. Description Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.
    Fact IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
    Frame CY2016Q1
    Label Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 430,000,000
  45. Description This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.
    Fact BusinessCombinationAcquisitionRelatedCosts
    Frame CY2016Q1
    Label Business Combination, Acquisition Related Costs
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 7,000,000
  46. Description The net cash inflow or outflow for borrowing having initial term of repayment within one year or the normal operating cycle, if longer.
    Fact ProceedsFromRepaymentsOfShortTermDebt
    Frame CY2016Q1
    Label Proceeds from (Repayments of) Short-term Debt
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val -323,000,000
  47. Description Amount, after tax and before adjustment, of unrealized holding gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Excludes unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale.
    Fact OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax
    Frame CY2016Q1
    Label OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 260,000,000
  48. Description Amount of cash outflow for debt, mandatory redeemable security, and principal payment for finance lease obligation.
    Fact RepaymentsOfLongTermDebtAndCapitalSecurities
    Frame CY2016Q1
    Label Repayment of Long-term Debt, Long-term Lease Obligation, and Capital Security
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,410,000,000
  49. Description Amount of transfers of financial instrument classified as an asset out of level 3 of the fair value hierarchy.
    Fact FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3
    Frame CY2016Q1
    Label Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 82,000,000
  50. Description Amount of cash inflow (outflow) from investing activities, including 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 NetCashProvidedByUsedInInvestingActivities
    Frame CY2016Q1
    Label Net Cash Provided by (Used in) Investing Activities
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 8,027,000,000
  51. Description The amount of expense in the period for communications and data processing expense.
    Fact CommunicationsAndInformationTechnology
    Frame CY2016Q1
    Label Communications and Information Technology
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 272,000,000
  52. Description Value of stock issued as a result of the exercise of stock options.
    Fact StockIssuedDuringPeriodValueStockOptionsExercised
    Frame CY2016Q1
    Label Stock Issued During Period, Value, Stock Options Exercised
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 57,000,000
  53. Description Amount of increase (decrease) in cash and cash equivalents. Cash and cash equivalents are the 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. Includes effect from exchange rate changes.
    Fact CashAndCashEquivalentsPeriodIncreaseDecrease
    Frame CY2016Q1
    Label Cash and Cash Equivalents, Period Increase (Decrease)
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 2,528,000,000
  54. Description Amount after tax of reclassification adjustments of other comprehensive income (loss) attributable to parent.
    Fact ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent
    Frame CY2016Q1
    Label Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val -4,000,000
  55. Description Amount of purchases of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.
    Fact FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases
    Frame CY2016Q1
    Label Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 545,000,000
  56. Description Aggregate amount of interest expense on all deposits.
    Fact InterestExpenseDeposits
    Frame CY2016Q1
    Label Interest Expense, Deposits
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 38,000,000
  57. Description The aggregate interest expense incurred on short-term borrowings including commercial paper and Federal funds purchased and securities sold under agreements to repurchase.
    Fact InterestExpenseShortTermBorrowings
    Frame CY2016Q1
    Label Interest Expense, Short-term Borrowings
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  58. Description Amount of the cost of borrowed funds accounted for as interest expense.
    Fact InterestExpense
    Frame CY2016Q1
    Label Interest Expense
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 117,000,000
  59. Description The increase (decrease) during the reporting period in the amount of cash that is received as security when loaning securities.
    Fact IncreaseDecreaseInCashCollateralForLoanedSecurities
    Frame CY2016Q1
    Label Increase (Decrease) in Cash Collateral for Loaned Securities
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val -776,000,000
  60. Description Interest income, including any amortization and accretion (as applicable) of discounts and premiums, derived from debt securities issued by municipal governments, local taxing districts and US state government agencies.
    Fact InterestIncomeSecuritiesStateAndMunicipal
    Frame CY2016Q1
    Label Interest Income, Securities, State and Municipal
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 52,000,000
  61. Description The net cash outflow or inflow for the increase (decrease) in the beginning and end of period of loan and lease balances which are not originated or purchased specifically for resale. Includes cash payments and proceeds associated with (a) loans held-for-investment, (b) leases held-for-investment, and (c) both.
    Fact PaymentsForProceedsFromLoansAndLeases
    Frame CY2016Q1
    Label Payments for (Proceeds from) Loans and Leases
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 378,000,000
  62. Description Amount of tax expense (benefit), after 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 OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax
    Frame CY2016Q1
    Label Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 9,000,000
  63. Description Amount of gain (loss) recognized in other comprehensive income (OCI) from asset measured at fair value on recurring basis using unobservable input (level 3).
    Fact FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss
    Frame CY2016Q1
    Label Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss)
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val -16,000,000
  64. 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 CY2016Q1
    Label Weighted Average Number of Shares Outstanding, Basic
    Start 2016-01-01
    Taxonomy us-gaap
    Unit shares
    Val 399,421,000
  65. Description Amount of expense related to estimated loss from loan and lease transactions.
    Fact ProvisionForLoanAndLeaseLosses
    Frame CY2016Q1
    Label Provision for Loan and Lease Losses
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 4,000,000
  66. Description Amount of cash inflow from maturity, prepayment and call of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).
    Fact ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities
    Frame CY2016Q1
    Label Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-sale
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 6,544,000,000
  67. Description Interest income derived from securities purchased under agreements to resell. The difference in the price at which the institution buys the securities and resells the securities represents interest for the use of the funds by the other party. Most repurchase and sale agreements involve obligations of the federal government or its agencies, but other financial instruments, such as commercial paper, banker's acceptances and negotiable certificates of deposits are sometimes used in such transactions.
    Fact InterestIncomeSecuritiesPurchasedUnderAgreementsToResell
    Frame CY2016Q1
    Label Interest Income, Securities Purchased under Agreements to Resell
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 36,000,000
  68. Description Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.
    Fact AllowanceForLoanAndLeaseLossesWriteOffs
    Frame CY2016Q1
    Label Allowance for Loan and Lease Losses, Write-offs
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 3,000,000
  69. Description Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the par value method.
    Fact TreasuryStockValueAcquiredParValueMethod
    Frame CY2016Q1
    Label Treasury Stock, Value, Acquired, Par Value Method
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 325,000,000
  70. Description Interest income derived from funds deposited with both domestic and foreign financial institutions including funds in money market and other accounts.
    Fact InterestIncomeDepositsWithFinancialInstitutions
    Frame CY2016Q1
    Label Interest Income, Deposits with Financial Institutions
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 43,000,000
  71. 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 CY2016Q1
    Label Earnings Per Share, Basic
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 0.8
  72. Description The expense in the period incurred with respect to protection provided by insurance entities against risks other than risks associated with production (which are allocated to cost of sales).
    Fact GeneralInsuranceExpense
    Frame CY2016Q1
    Label General Insurance Expense
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 22,000,000
  73. Description The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.
    Fact NetIncomeLoss
    Frame CY2016Q1
    Label Net Income (Loss) Attributable to Parent
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 368,000,000
  74. Description For banks and other depository institutions: Includes cash on hand (currency and coin), cash items in process of collection, noninterest bearing deposits due from other financial institutions (including corporate credit unions), and noninterest bearing balances with the Federal Reserve Banks, Federal Home Loan Banks and central banks.
    Fact CashAndDueFromBanks
    Frame CY2016Q1I
    Label Cash and Due from Banks
    Taxonomy us-gaap
    Unit USD
    Val 3,735,000,000
  75. Description Amount of expense classified as other.
    Fact OtherExpenses
    Frame CY2016Q1
    Label Other Expenses
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 112,000,000
  76. Description Amount of increase (decrease) in operating liabilities classified as other.
    Fact IncreaseDecreaseInOtherOperatingLiabilities
    Frame CY2016Q1
    Label Increase (Decrease) in Other Operating Liabilities
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,293,000,000
  77. Description Amount of gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3).
    Fact FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1
    Frame CY2016Q1
    Label Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 10,000,000
  78. Description Amount of increase in additional paid in capital (APIC) resulting from a tax benefit associated with share-based compensation plan other than an employee stock ownership plan (ESOP). Includes, but is not limited to, excess tax benefit.
    Fact AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation
    Frame CY2016Q1
    Label Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 3,000,000
  79. Description The cash outflow to reacquire common stock during the period.
    Fact PaymentsForRepurchaseOfCommonStock
    Frame CY2016Q1
    Label Payments for Repurchase of Common Stock
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 268,000,000
  80. Description Amount of fees and commissions from banking, advisory, brokerage, and securities underwriting activities. Activities include, but are not limited to, underwriting securities, private placements of securities, investment advisory and management services, merger and acquisition services, sale and servicing of mutual funds, and other related consulting fees.
    Fact InvestmentBankingAdvisoryBrokerageAndUnderwritingFeesAndCommissions
    Frame CY2016Q1
    Label Investment Banking, Advisory, Brokerage, and Underwriting Fees and Commissions
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 134,000,000
  81. Description The cash outflow to acquire debt and equity securities not classified as either held-to-maturity securities or trading securities which would be classified as available-for-sale securities and reported at fair value, with unrealized gains and losses excluded from earnings and reported in a separate component of shareholders' equity.
    Fact PaymentsToAcquireAvailableForSaleSecurities
    Frame CY2016Q1
    Label Payments to Acquire Available-for-sale Securities
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 6,947,000,000
  82. Description Amount of increase (decrease) of investment in debt and equity securities, measured at fair value with changes in fair value recognized in net income.
    Fact IncreaseDecreaseInTradingSecurities
    Frame CY2016Q1
    Label Increase (Decrease) in Debt Securities, Trading, and Equity Securities, FV-NI
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 24,000,000
  83. Description Total aggregate amount of all noninterest expense.
    Fact NoninterestExpense
    Frame CY2016Q1
    Label Noninterest Expense
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 2,050,000,000
  84. Description Amount of paid and unpaid preferred stock dividends declared with the form of settlement in cash.
    Fact DividendsPreferredStockCash
    Frame CY2016Q1
    Label Dividends, Preferred Stock, Cash
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 49,000,000
  85. Description The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.
    Fact WeightedAverageNumberOfDilutedSharesOutstanding
    Frame CY2016Q1
    Label Weighted Average Number of Shares Outstanding, Diluted
    Start 2016-01-01
    Taxonomy us-gaap
    Unit shares
    Val 403,615,000
  86. Description Amount, after tax and reclassification adjustment, of (increase) decrease in accumulated other comprehensive income for defined benefit plan.
    Fact OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax
    Frame CY2016Q1
    Label Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 2,000,000
  87. Description Amount of operating interest income, including, but not limited to, amortization and accretion of premiums and discounts on securities.
    Fact InterestIncomeOperating
    Frame CY2016Q1
    Label Interest Income, Operating
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 629,000,000
  88. Description Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.
    Fact DividendsCommonStockCash
    Frame CY2016Q1
    Label Dividends, Common Stock, Cash
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 135,000,000
  89. 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 CY2016Q1I
    Label Stockholders' Equity Attributable to Parent
    Taxonomy us-gaap
    Unit USD
    Val 21,496,000,000
  90. Description Amount of general expenses not normally included in Other Operating Costs and Expenses.
    Fact OtherGeneralExpense
    Frame CY2016Q1
    Label Other General Expense
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 66,000,000
  91. Description Amount of increase (decrease) in receivables classified as other.
    Fact IncreaseDecreaseInOtherReceivables
    Frame CY2016Q1
    Label Increase (Decrease) in Other Receivables
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 25,000,000
  92. Description This item represents reductions in the cumulative amount of credit losses recognized in earnings for an other than temporary impairment (OTTI) of a debt security because of the sale of impaired securities during the period.
    Fact OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesSold
    Frame CY2016Q1
    Label Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions, Securities Sold
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,000,000
  93. Description Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.
    Fact NetCashProvidedByUsedInOperatingActivities
    Frame CY2016Q1
    Label Net Cash Provided by (Used in) Operating Activities
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 2,852,000,000
  94. 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 CY2016Q1
    Label Revenues
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 2,484,000,000
  95. Description Amount of settlement of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.
    Fact FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements
    Frame CY2016Q1
    Label Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 91,000,000
  96. 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 CY2016Q1
    Label Occupancy, Net
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 113,000,000
  97. Description Amount of cash outflow to acquire investments classified as other.
    Fact PaymentsToAcquireOtherInvestments
    Frame CY2016Q1
    Label Payments to Acquire Other Investments
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 80,000,000
  98. Description Amount of increase (decrease) in operating assets classified as other.
    Fact IncreaseDecreaseInOtherOperatingAssets
    Frame CY2016Q1
    Label Increase (Decrease) in Other Operating Assets
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 874,000,000
  99. Description Amount after tax, before reclassification adjustments, of other comprehensive income (loss), attributable to parent.
    Fact OciBeforeReclassificationsNetOfTaxAttributableToParent
    Frame CY2016Q1
    Label OCI, before Reclassifications, Net of Tax, Attributable to Parent
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 474,000,000
  100. Description The net cash inflow or outflow in Interest-bearing Deposits by banks in other financial institutions for relatively short periods of time including, for example, certificates of deposits.
    Fact ProceedsFromPaymentsForInInterestBearingDepositsInBanks
    Frame CY2016Q1
    Label Proceeds from (Payments for) in Interest-bearing Deposits in Banks
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 10,306,000,000

Facts up to 2015-12-31

  1. Description Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.
    Fact FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue
    Label Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value
    Taxonomy us-gaap
    Unit USD
    Val 2,469,000,000
  2. 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 5,671,000,000
  3. Description Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.
    Fact RestructuringReserve
    Label Restructuring Reserve
    Taxonomy us-gaap
    Unit USD
    Val 23,000,000
  4. 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 1,768,000,000
  5. Description Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.
    Fact FinancingReceivableAllowanceForCreditLosses
    Label Financing Receivable, Allowance for Credit Loss
    Taxonomy us-gaap
    Unit USD
    Val 46,000,000
  6. Description The cumulative amount of credit losses recognized in earnings related to debt securities held for which a portion of an other than temporary impairment (OTTI) was recognized in other comprehensive income (a component of shareholders' equity).
    Fact OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld
    Label Other than Temporary Impairment, Credit Losses Recognized in Earnings, Credit Losses on Debt Securities Held
    Taxonomy us-gaap
    Unit USD
    Val 92,000,000
  7. Description For banks and other depository institutions: Includes cash on hand (currency and coin), cash items in process of collection, noninterest bearing deposits due from other financial institutions (including corporate credit unions), and noninterest bearing balances with the Federal Reserve Banks, Federal Home Loan Banks and central banks.
    Fact CashAndDueFromBanks
    Label Cash and Due from Banks
    Taxonomy us-gaap
    Unit USD
    Val 1,207,000,000
  8. 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 21,103,000,000

The filing refers to a past date, and does not necessarily reflect the current state. The latest known state is available on the following page: State Street Corporation Company, Boston, United States.