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U.S. Securities and Exchange Commission's Electronic Data Gathering, Analysis, and Retrieval system Sec 3 May 2017 U.S. Securities and Exchange Commission's Electronic Data Gathering, Analysis, and Retrieval system, United States

Text

Entity

entityName WaFd, Inc.
Cik 936528
Form 10-Q
Filed 2017-05-03
Fp Q2
Fy 2017
Accn 0000936528-17-000021

Facts up to 2017-05-02

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 89,449,655

Facts up to 2017-03-31

  1. 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 2016-10-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 0.93
  2. 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 0.47
  3. 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 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 40,580,000
  4. 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 20,721,000
  5. Description Number of warrants or rights outstanding.
    Fact ClassOfWarrantOrRightOutstanding
    Frame CY2017Q1I
    Label Class of Warrant or Right, Outstanding
    Taxonomy us-gaap
    Unit shares
    Val 536,152
  6. Description The net amount of operating interest income (expense).
    Fact InterestIncomeExpenseNet
    Label Interest Income (Expense), Net
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 210,879,000
  7. 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 107,727,000
  8. Description The net cash inflow or outflow for the increase (decrease) in the beginning and end of period deposits balances.
    Fact IncreaseDecreaseInDeposits
    Label Increase (Decrease) in Deposits
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 30,107,000
  9. 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 291,503,000
  10. Description Amount, after troubled debt restructuring, of modified financing receivable.
    Fact FinancingReceivableModificationsPostModificationRecordedInvestment2
    Label Financing Receivable, Troubled Debt Restructuring, Postmodification
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 4,278,000
  11. Description Amount, after troubled debt restructuring, of modified financing receivable.
    Fact FinancingReceivableModificationsPostModificationRecordedInvestment2
    Label Financing Receivable, Troubled Debt Restructuring, Postmodification
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,712,000
  12. Description Amount after tax and reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss), attributable to parent entity.
    Fact OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent
    Label Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax, Portion Attributable to Parent
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 20,029,000
  13. Description Amount after tax and reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss), attributable to parent entity.
    Fact OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent
    Label Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax, Portion Attributable to Parent
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,515,000
  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 4,554,000
  15. Description Amount after tax and reclassification adjustments of other comprehensive income (loss).
    Fact OtherComprehensiveIncomeLossNetOfTax
    Label Other Comprehensive Income (Loss), Net of Tax
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 13,435,000
  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 5,111,000
  17. 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 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 415,729,000
  18. 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 8,687,000
  19. Description Amount of increase in allowance for credit loss on financing receivable from recovery.
    Fact FinancingReceivableAllowanceForCreditLossesRecovery
    Label Financing Receivable, Allowance for Credit Loss, Recovery
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 12,009,000
  20. Description Amount of increase in allowance for credit loss on financing receivable from recovery.
    Fact FinancingReceivableAllowanceForCreditLossesRecovery
    Label Financing Receivable, Allowance for Credit Loss, Recovery
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 6,309,000
  21. Description Value received from shareholders in common stock-related transactions that are in excess of par value or stated value and amounts received from other stock-related transactions. Includes only common stock transactions (excludes preferred stock transactions). May be called contributed capital, capital in excess of par, capital surplus, or paid-in capital.
    Fact AdditionalPaidInCapitalCommonStock
    Frame CY2017Q1I
    Label Additional Paid in Capital, Common Stock
    Taxonomy us-gaap
    Unit USD
    Val 1,658,548,000
  22. Description Carrying amount as of the balance sheet date of investments in land and buildings held for sale, excluding real estate considered to be inventory of the entity.
    Fact RealEstateHeldforsale
    Frame CY2017Q1I
    Label Real Estate Held-for-sale
    Taxonomy us-gaap
    Unit USD
    Val 22,543,000
  23. Description Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.
    Fact OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax
    Label Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 3,832,000
  24. Description Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.
    Fact OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax
    Label Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -2,089,000
  25. Description Amount of cash outflow to acquire Federal Reserve Bank (FRB) stock.
    Fact PaymentsToAcquireFederalReserveStock
    Label Payments to Acquire Federal Reserve Bank Stock
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 17,209,000
  26. 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 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 37,544,000
  27. Description Number of financing receivables that have been modified by troubled debt restructurings.
    Fact FinancingReceivableModificationsNumberOfContracts2
    Label Financing Receivable, Modifications, Number of Contracts
    Start 2016-10-01
    Taxonomy us-gaap
    Unit contract
    Val 22
  28. Description Number of financing receivables that have been modified by troubled debt restructurings.
    Fact FinancingReceivableModificationsNumberOfContracts2
    Label Financing Receivable, Modifications, Number of Contracts
    Start 2017-01-01
    Taxonomy us-gaap
    Unit contract
    Val 8
  29. Description Amount of expense for Federal Deposit Insurance Corporation (FDIC) insurance.
    Fact FederalDepositInsuranceCorporationPremiumExpense
    Label Federal Deposit Insurance Corporation Premium Expense
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 5,749,000
  30. Description Amount of expense for Federal Deposit Insurance Corporation (FDIC) insurance.
    Fact FederalDepositInsuranceCorporationPremiumExpense
    Label Federal Deposit Insurance Corporation Premium Expense
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 2,910,000
  31. 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 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 131,556,000
  32. Description The fair value of stock issued in noncash financing activities.
    Fact StockIssued1
    Label Stock Issued
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 4,036,000
  33. Description Amount, before troubled debt restructuring, of financing receivable to be modified.
    Fact FinancingReceivableModificationsPreModificationRecordedInvestment2
    Label Financing Receivable, Troubled Debt Restructuring, Premodification
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 4,278,000
  34. Description Amount, before troubled debt restructuring, of financing receivable to be modified.
    Fact FinancingReceivableModificationsPreModificationRecordedInvestment2
    Label Financing Receivable, Troubled Debt Restructuring, Premodification
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,712,000
  35. 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 45,385,216
  36. Description Total cost of shares repurchased divided by the total number of shares repurchased.
    Fact TreasuryStockAcquiredAverageCostPerShare
    Frame CY2017Q1
    Label Treasury Stock Acquired, Average Cost Per Share
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 33.55
  37. Description Aggregate amount of interest expense on all borrowings.
    Fact InterestExpenseBorrowings
    Label Interest Expense, Borrowings
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 32,674,000
  38. Description Aggregate amount of interest expense on all borrowings.
    Fact InterestExpenseBorrowings
    Label Interest Expense, Borrowings
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 16,079,000
  39. Description Amount of noninterest expense classified as other.
    Fact OtherNoninterestExpense
    Label Other Noninterest Expense
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 12,704,000
  40. Description Amount of noninterest expense classified as other.
    Fact OtherNoninterestExpense
    Label Other Noninterest Expense
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 6,458,000
  41. 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 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 96,751,000
  42. 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 47,181,000
  43. Description The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.
    Fact FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
    Frame CY2017Q1I
    Label Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment
    Taxonomy us-gaap
    Unit USD
    Val 4,317,000
  44. Description Amount of liabilities incurred and payable to vendors for goods and services received, and accrued liabilities classified as other.
    Fact AccountsPayableAndOtherAccruedLiabilities
    Frame CY2017Q1I
    Label Accounts Payable and Other Accrued Liabilities
    Taxonomy us-gaap
    Unit USD
    Val 122,881,000
  45. Description Carrying amount of accumulated prepayments received by financial institutions from borrowers for taxes (for example, property taxes) and insurance (for example, property and catastrophe) which will periodically be remitted to the appropriate governmental agency or vendor on behalf of the borrower.
    Fact AdvancePaymentsByBorrowersForTaxesAndInsurance
    Frame CY2017Q1I
    Label Advance Payments by Borrowers for Taxes and Insurance
    Taxonomy us-gaap
    Unit USD
    Val 42,226,000
  46. 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 121,922,000
  47. 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 271,727,000
  48. Description Amount of writeoff of financing receivable, charged against allowance for credit loss.
    Fact FinancingReceivableAllowanceForCreditLossesWriteOffs
    Label Financing Receivable, Allowance for Credit Loss, Writeoff
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 1,497,000
  49. Description Amount of writeoff of financing receivable, charged against allowance for credit loss.
    Fact FinancingReceivableAllowanceForCreditLossesWriteOffs
    Label Financing Receivable, Allowance for Credit Loss, Writeoff
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,093,000
  50. Description Amount of financing receivable past due.
    Fact FinancingReceivableRecordedInvestmentPastDue
    Frame CY2017Q1I
    Label Financing Receivable, Past Due
    Taxonomy us-gaap
    Unit USD
    Val 69,456,000
  51. Description Amount of interest income or expense, including any amortization and accretion (as applicable) of discounts and premiums, including consideration of the provisions for loan, lease, credit, and other related losses.
    Fact InterestIncomeExpenseAfterProvisionForLoanLoss
    Label Interest Income (Expense), after Provision for Loan Loss
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 212,479,000
  52. Description Amount of interest income or expense, including any amortization and accretion (as applicable) of discounts and premiums, including consideration of the provisions for loan, lease, credit, and other related losses.
    Fact InterestIncomeExpenseAfterProvisionForLoanLoss
    Label Interest Income (Expense), after Provision for Loan Loss
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 109,327,000
  53. 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 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 55,827,000
  54. 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 28,833,000
  55. Description Amount of operating interest income, including amortization and accretion of premiums and discounts, on securitized, pass-through debt securities collateralized by real estate mortgage loans.
    Fact InterestIncomeSecuritiesMortgageBacked
    Label Interest Income, Securities, Mortgage Backed
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 29,015,000
  56. Description Amount of operating interest income, including amortization and accretion of premiums and discounts, on securitized, pass-through debt securities collateralized by real estate mortgage loans.
    Fact InterestIncomeSecuritiesMortgageBacked
    Label Interest Income, Securities, Mortgage Backed
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 16,226,000
  57. 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 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 350,890,000
  58. Description Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects.
    Fact GainLossOnDerivativeInstrumentsNetPretax
    Label Gain (Loss) on Derivative Instruments, Net, Pretax
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  59. Description Amount of assets classified as other.
    Fact OtherAssets
    Frame CY2017Q1I
    Label Other Assets
    Taxonomy us-gaap
    Unit USD
    Val 183,049,000
  60. Description The total amount of noninterest income which may be derived from: (1) fees and commissions; (2) premiums earned; (3) insurance policy charges; (4) the sale or disposal of assets; and (5) other sources not otherwise specified.
    Fact NoninterestIncome
    Label Noninterest Income
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 22,032,000
  61. Description The total amount of noninterest income which may be derived from: (1) fees and commissions; (2) premiums earned; (3) insurance policy charges; (4) the sale or disposal of assets; and (5) other sources not otherwise specified.
    Fact NoninterestIncome
    Label Noninterest Income
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 10,136,000
  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 2,108,724,000
  63. 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 10,463,022,000
  64. Description Amount before tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).
    Fact OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax
    Label Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 31,666,000
  65. Description Amount before tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).
    Fact OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax
    Label Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 2,395,000
  66. 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 33,494,000
  67. Description Federal Home Loan Bank (FHLB) stock represents an equity interest in a FHLB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity).
    Fact FederalHomeLoanBankStock
    Frame CY2017Q1I
    Label Federal Home Loan Bank Stock
    Taxonomy us-gaap
    Unit USD
    Val 119,990,000
  68. Description The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.
    Fact ProceedsFromIssuanceOfDebt
    Label Proceeds from Issuance of Debt
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 430,000,000
  69. Description Amount of cash paid for interest, including, but not limited to, capitalized interest and payment to settle zero-coupon bond attributable to accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount; classified as operating and investing activities.
    Fact InterestPaid
    Label Interest Paid, Including Capitalized Interest, Operating and Investing Activities
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 55,599,000
  70. Description Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.
    Fact StockRepurchasedDuringPeriodShares
    Frame CY2017Q1
    Label Stock Repurchased During Period, Shares
    Start 2017-01-01
    Taxonomy us-gaap
    Unit shares
    Val 477
  71. Description Earnings on or other increases in the value of the cash surrender value of bank owned life insurance policies.
    Fact BankOwnedLifeInsuranceIncome
    Label Bank Owned Life Insurance Income
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 3,332,000
  72. Description The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.
    Fact RepaymentsOfDebt
    Label Repayments of Debt
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 360,000,000
  73. Description Aggregate dividends paid during the period for each share of common stock outstanding.
    Fact CommonStockDividendsPerShareCashPaid
    Label Common Stock, Dividends, Per Share, Cash Paid
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 0.54
  74. Description Aggregate dividends paid during the period for each share of common stock outstanding.
    Fact CommonStockDividendsPerShareCashPaid
    Label Common Stock, Dividends, Per Share, Cash Paid
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 0.4
  75. 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
  76. Description Increases to the indemnification asset due to accretion of the loan discount relating to loss sharing agreements with the Federal Deposit Insurance Corporation (FDIC).
    Fact FDICIndemnificationAssetAccretionOfDiscount
    Label FDIC Indemnification Asset, Accretion of Discount
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 118,000
  77. 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 40,573,000
  78. Description Amount of time deposit liabilities, including certificates of deposit.
    Fact TimeDeposits
    Frame CY2017Q1I
    Label Time Deposits
    Taxonomy us-gaap
    Unit USD
    Val 4,418,108,000
  79. 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 14,960,676,000
  80. Description The amount of expenses incurred in the period for information technology and data processing products and services.
    Fact InformationTechnologyAndDataProcessing
    Label Information Technology and Data Processing
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 13,137,000
  81. Description The amount of expenses incurred in the period for information technology and data processing products and services.
    Fact InformationTechnologyAndDataProcessing
    Label Information Technology and Data Processing
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 6,686,000
  82. Description Includes amounts charged depositors for: (1) maintenance of their accounts (maintenance charges); (2) failure to maintain specified minimum balances on account; (3) exceeding the number of checks or transactions allowed to be processed in a given period; (4) checks drawn on no minimum balance deposit accounts; (5) withdrawals from nontransaction deposit accounts; (6) closing savings accounts before a specified minimum period of time has elapsed; (7) accounts which have remained inactive for extended periods of time or which have become dormant; (8) use of automated teller machines or remote service units; (9) checks drawn against insufficient funds that the bank assesses regardless of whether it decides to pay, return or hold the check; (10) issuing stop payment orders; (11) certifying checks; and (12) accumulating or disbursing funds deposited in IRAs or Keogh Plan accounts when not handled by the bank's trust department. This item does not include penalties assessed on the early withdrawal of time deposits.
    Fact FeesAndCommissionsDepositorAccounts
    Label Fees and Commissions, Depositor Accounts (Deprecated 2018-01-31)
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 10,089,000
  83. Description Includes amounts charged depositors for: (1) maintenance of their accounts (maintenance charges); (2) failure to maintain specified minimum balances on account; (3) exceeding the number of checks or transactions allowed to be processed in a given period; (4) checks drawn on no minimum balance deposit accounts; (5) withdrawals from nontransaction deposit accounts; (6) closing savings accounts before a specified minimum period of time has elapsed; (7) accounts which have remained inactive for extended periods of time or which have become dormant; (8) use of automated teller machines or remote service units; (9) checks drawn against insufficient funds that the bank assesses regardless of whether it decides to pay, return or hold the check; (10) issuing stop payment orders; (11) certifying checks; and (12) accumulating or disbursing funds deposited in IRAs or Keogh Plan accounts when not handled by the bank's trust department. This item does not include penalties assessed on the early withdrawal of time deposits.
    Fact FeesAndCommissionsDepositorAccounts
    Label Fees and Commissions, Depositor Accounts (Deprecated 2018-01-31)
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 4,904,000
  84. 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 979,198,000
  85. Description Amount of undisbursed portion of the loan receivable balance (loans in process). Excludes loans and leases covered under loss sharing agreements.
    Fact LoansAndLeasesReceivableLoansInProcess
    Frame CY2017Q1I
    Label Loans and Leases Receivable, Loans in Process
    Taxonomy us-gaap
    Unit USD
    Val 1,009,937,000
  86. Description The increase (decrease) during the reporting period in the amount due from borrowers for interest payments.
    Fact IncreaseDecreaseInAccruedInterestReceivableNet
    Label Increase (Decrease) in Accrued Interest Receivable, Net
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 2,904,000
  87. 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 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 230,869,000
  88. 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 116,034,000
  89. Description Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.
    Fact InvestmentsFairValueDisclosure
    Frame CY2017Q1I
    Label Investments, Fair Value Disclosure
    Taxonomy us-gaap
    Unit USD
    Val 3,057,330,000
  90. 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 1,388,782,000
  91. Description The net gain (loss) realized from the sale, exchange, redemption, or retirement of securities, not separately or otherwise categorized as trading, available-for-sale, or held-to-maturity.
    Fact GainLossOnSaleOfSecuritiesNet
    Label Gain (Loss) on Sale of Securities, Net (Deprecated 2018-01-31)
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 968,000
  92. Description The net gain (loss) realized from the sale, exchange, redemption, or retirement of securities, not separately or otherwise categorized as trading, available-for-sale, or held-to-maturity.
    Fact GainLossOnSaleOfSecuritiesNet
    Label Gain (Loss) on Sale of Securities, Net (Deprecated 2018-01-31)
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  93. Description Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property.
    Fact GainLossOnSaleOfPropertyPlantEquipment
    Label Gain (Loss) on Disposition of Property Plant Equipment
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 2,587,000
  94. Description Amount of increase (decrease) in accrued expenses, and obligations classified as other.
    Fact IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities
    Label Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val -41,839,000
  95. Description The increase (decrease) during the reporting period in the amounts payable to taxing authorities for taxes that are based on the reporting entity's earnings, net of amounts receivable from taxing authorities for refunds of overpayments or recoveries of income taxes.
    Fact IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable
    Label Increase (Decrease) in Income Taxes Payable, Net of Income Taxes Receivable
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 16,047,000
  96. 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 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 123,896,000
  97. 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 62,791,000
  98. Description Sum of the carrying amounts as of the balance sheet date of all investments.
    Fact Investments
    Frame CY2017Q1I
    Label Investments
    Taxonomy us-gaap
    Unit USD
    Val 3,083,148,000
  99. Description Reflects the amount of additional interest income that would have been recorded if impaired or nonperforming loans were instead current, in compliance with their original terms, and outstanding throughout the reporting period or since origination (if held for part of the period).
    Fact LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans
    Label Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 1,134,000
  100. 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 808,820,000
  101. Description Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.
    Fact PaymentsOfDividendsCommonStock
    Label Payments of Ordinary Dividends, Common Stock
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 47,995,000
  102. 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 9,373,000
  103. Description The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income.
    Fact IncomeTaxesPaid
    Label Income Taxes Paid
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 16,903,000
  104. Description The noninterest income derived from mortgage banking activities (fees and commissions), excluding fees earned from servicing third-party assets.
    Fact FeesAndCommissionsMortgageBanking
    Label Fees and Commissions, Mortgage Banking (Deprecated 2018-01-31)
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 2,421,000
  105. Description The noninterest income derived from mortgage banking activities (fees and commissions), excluding fees earned from servicing third-party assets.
    Fact FeesAndCommissionsMortgageBanking
    Label Fees and Commissions, Mortgage Banking (Deprecated 2018-01-31)
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,087,000
  106. 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 12,657,000
  107. 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 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val -305,479,000
  108. 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 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 6,505,000
  109. 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 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val -183,971,000
  110. Description Amount of tax expense (benefit), after reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss), attributable to parent entity.
    Fact OtherComprehensiveIncomeDerivativesQualifyingAsHedgesTaxPortionAttributableToParent
    Label Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax, Portion Attributable to Parent
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 11,637,000
  111. Description Amount of tax expense (benefit), after reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss), attributable to parent entity.
    Fact OtherComprehensiveIncomeDerivativesQualifyingAsHedgesTaxPortionAttributableToParent
    Label Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax, Portion Attributable to Parent
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 880,000
  112. Description Aggregate amount of interest expense on all deposits.
    Fact InterestExpenseDeposits
    Label Interest Expense, Deposits
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 25,409,000
  113. 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 12,392,000
  114. Description Amount of the cost of borrowed funds accounted for as interest expense.
    Fact InterestExpense
    Label Interest Expense
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 58,083,000
  115. 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 28,471,000
  116. Description Amount before tax of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.
    Fact OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax
    Label Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val -968,000
  117. Description Amount before tax of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.
    Fact OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax
    Label Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  118. Description Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.
    Fact CashAndCashEquivalentsAtCarryingValue
    Label Cash and Cash Equivalents, at Carrying Value
    Taxonomy us-gaap
    Unit USD
    Val 266,397,000
  119. 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 42,181,000
  120. Description Carrying amount as of the balance sheet date of income taxes previously overpaid to tax authorities (such as U.S. Federal, state and local tax authorities) representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes. Also called income tax refund receivable.
    Fact IncomeTaxReceivable
    Frame CY2017Q1I
    Label Income Taxes Receivable
    Taxonomy us-gaap
    Unit USD
    Val 0
  121. Description Amount of revenue earned, classified as other, excluding interest income.
    Fact NoninterestIncomeOtherOperatingIncome
    Label Noninterest Income, Other Operating Income
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 8,554,000
  122. Description Amount of revenue earned, classified as other, excluding interest income.
    Fact NoninterestIncomeOtherOperatingIncome
    Label Noninterest Income, Other Operating Income
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 4,145,000
  123. Description Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.
    Fact ImpairedFinancingReceivableRecordedInvestment
    Frame CY2017Q1I
    Label Impaired Financing Receivable, Recorded Investment
    Taxonomy us-gaap
    Unit USD
    Val 282,439,000
  124. 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 11,640,489,000
  125. Description Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.
    Fact TreasuryStockValueAcquiredCostMethod
    Label Treasury Stock, Value, Acquired, Cost Method
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 20,401,000
  126. 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 2016-10-01
    Taxonomy us-gaap
    Unit shares
    Val 89,346,294
  127. 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 89,382,416
  128. Description The cash outflow associated with purchasing loans held for investment purposes during the period.
    Fact PaymentsToAcquireLoansHeldForInvestment
    Label Payments to Acquire Loans Held-for-investment
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 72,856,000
  129. Description Amount of cash outflow (inflow) from acquisition (sale) of Federal Home Loan Bank (FHLBank) stock.
    Fact PaymentsForProceedsFromFederalHomeLoanBankStock
    Label Payments for (Proceeds from) Federal Home Loan Bank Stock
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val -14,424,000
  130. Description Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.
    Fact FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
    Frame CY2017Q1I
    Label Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment
    Taxonomy us-gaap
    Unit USD
    Val 100,000
  131. 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 134,823,779
  132. Description Amount before accretion (amortization) of purchase discount (premium) of interest income and dividend income on nonoperating securities.
    Fact InvestmentIncomeInterestAndDividend
    Label Investment Income, Interest and Dividend
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 268,962,000
  133. Description Amount before accretion (amortization) of purchase discount (premium) of interest income and dividend income on nonoperating securities.
    Fact InvestmentIncomeInterestAndDividend
    Label Investment Income, Interest and Dividend
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 136,198,000
  134. Description Amount of expense related to estimated loss from loan and lease transactions.
    Fact ProvisionForLoanAndLeaseLosses
    Label Provision for Loan and Lease Losses
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val -1,600,000
  135. 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 -1,600,000
  136. 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 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 169,937,000
  137. Description Amount of cash outflow for payment of premium on corporate-owned life insurance policy, classified as investing activities. Includes, but is not limited to, bank-owned life insurance policy.
    Fact PaymentsToAcquireLifeInsurancePolicies
    Label Payment to Acquire Life Insurance Policy, Investing Activities
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  138. 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 4,060,000
  139. 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 1,697,650,000
  140. 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 12,945,914,000
  141. 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 14,960,676,000
  142. Description Value of stock related to Restricted Stock Awards issued during the period, net of the stock value of such awards forfeited.
    Fact StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures
    Label Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 4,171,000
  143. 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 2016-10-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 0.93
  144. 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 0.47
  145. Description The cash inflow from the sale of formerly productive land held for sale, anything permanently fixed to it, including buildings, structures on it, and so forth.
    Fact ProceedsFromSaleOfPropertyHeldForSale
    Label Proceeds from Sale of Property Held-for-sale
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 10,222,000
  146. 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 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 83,316,000
  147. 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 42,070,000
  148. Description The net realized gain (loss) on investments sold during the period, not including gains (losses) on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity, which, for cash flow reporting, is a component of proceeds from investing activities.
    Fact GainLossOnSaleOfInvestments
    Label Gain (Loss) on Sale of Investments
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 968,000
  149. 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 760,087,000
  150. 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 1,299,904,000
  151. Description Amount of deferred fees paid by borrowers and unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of loans that are being amortized into income as an adjustment to yield. Excludes amounts for loans and leases covered under loss sharing agreements.
    Fact UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums
    Frame CY2017Q1I
    Label Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums
    Taxonomy us-gaap
    Unit USD
    Val -45,608,000
  152. Description The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.
    Fact StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased
    Frame CY2017Q1I
    Label Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased
    Taxonomy us-gaap
    Unit shares
    Val 4,157,081
  153. Description Amount of financing receivable not past due.
    Fact FinancingReceivableRecordedInvestmentCurrent
    Frame CY2017Q1I
    Label Financing Receivable, Not Past Due
    Taxonomy us-gaap
    Unit USD
    Val 10,561,096,000
  154. Description The cash outflow to reacquire common stock during the period.
    Fact PaymentsForRepurchaseOfCommonStock
    Label Payments for Repurchase of Common Stock
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 20,401,000
  155. 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 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  156. 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 210,873,000
  157. Description Total aggregate amount of all noninterest expense.
    Fact NoninterestExpense
    Label Noninterest Expense
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 111,808,000
  158. Description Total aggregate amount of all noninterest expense.
    Fact NoninterestExpense
    Label Noninterest Expense
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 57,467,000
  159. Description Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.
    Fact ImpairedFinancingReceivableUnpaidPrincipalBalance
    Frame CY2017Q1I
    Label Impaired Financing Receivable, Unpaid Principal Balance
    Taxonomy us-gaap
    Unit USD
    Val 321,859,000
  160. 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 1,385,498,000
  161. 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 2016-10-01
    Taxonomy us-gaap
    Unit shares
    Val 89,732,042
  162. 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 89,736,320
  163. Description Amount of cash inflow for proceeds from settlement of corporate-owned life insurance policy, classified as investing activities. Includes, but is not limited to, bank-owned life insurance policy.
    Fact ProceedsFromLifeInsurancePolicies
    Label Proceeds from Life Insurance Policy
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 1,231,000
  164. 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 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 47,995,000
  165. 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 2,014,762,000
  166. Description Amount after tax and reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities, attributable to parent entity. Excludes amounts related to other than temporary impairment (OTTI) loss.
    Fact OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent
    Label Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Parent
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val -6,594,000
  167. Description Amount after tax and reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities, attributable to parent entity. Excludes amounts related to other than temporary impairment (OTTI) loss.
    Fact OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent
    Label Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Parent
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 3,596,000
  168. Description The net gain (loss) resulting from sales and other disposals of other real estate owned, increases (decreases) in the valuation allowance for foreclosed real estate, and write-downs of other real estate owned after acquisition or physical possession.
    Fact GainsLossesOnSalesOfOtherRealEstate
    Label Gains (Losses) on Sales of Other Real Estate
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 1,193,000
  169. Description The net gain (loss) resulting from sales and other disposals of other real estate owned, increases (decreases) in the valuation allowance for foreclosed real estate, and write-downs of other real estate owned after acquisition or physical possession.
    Fact GainsLossesOnSalesOfOtherRealEstate
    Label Gains (Losses) on Sales of Other Real Estate
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 795,000
  170. 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 134,824,000
  171. Description Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.
    Fact ImpairedFinancingReceivableAverageRecordedInvestment
    Label Impaired Financing Receivable, Average Recorded Investment
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 265,297,000
  172. 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 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 83,964,000
  173. 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 4,417,000
  174. 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 2,279,000
  175. Description Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.
    Fact CommonStockSharesOutstanding
    Frame CY2017Q1I
    Label Common Stock, Shares, Outstanding
    Taxonomy us-gaap
    Unit shares
    Val 89,438,563
  176. Description Amount, before tax and 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 OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax
    Label OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment and Tax
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val -11,394,000
  177. Description Amount, before tax and 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 OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax
    Label OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment and Tax
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 5,685,000
  178. 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 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 17,541,000
  179. 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 9,091,000
  180. Description The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.
    Fact DepreciationDepletionAndAmortization
    Label Depreciation, Depletion and Amortization
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 18,770,000
  181. Description The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.
    Fact ProceedsFromSaleOfPropertyPlantAndEquipment
    Label Proceeds from Sale of Property, Plant, and Equipment
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 3,956,000
  182. Description Amount of increase (decrease) in prepayments received from borrowers for taxes and insurance remitted to the appropriate tax authority or insurer on behalf of the borrower.
    Fact IncreaseDecreaseInAdvancePaymentsByBorrowersForTaxesAndInsurance
    Label Increase (Decrease) in Advance Payments by Borrowers for Taxes and Insurance
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val -672,000
  183. 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 300,000,000
  184. Description Amount of increase (decrease) in operating assets classified as other.
    Fact IncreaseDecreaseInOtherOperatingAssets
    Label Increase (Decrease) in Other Operating Assets
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val -15,275,000
  185. Description Including both current and noncurrent portions, Federal Home Loan Bank borrowings initially due beyond one year or beyond the normal operating cycle if longer.
    Fact FederalHomeLoanBankAdvancesLongTerm
    Frame CY2017Q1I
    Label Long-term Federal Home Loan Bank Advances
    Taxonomy us-gaap
    Unit USD
    Val 2,150,000,000
  186. Description The cash inflow associated with the sale of securities that had been designated as held-to-maturity. Excludes proceeds from maturities, prepayments and calls by the issuer.
    Fact ProceedsFromSaleOfHeldToMaturitySecurities
    Label Proceeds from Sale of Held-to-maturity Securities
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  187. Description Amount of cash inflow from exercise of option under share-based payment arrangement.
    Fact ProceedsFromStockOptionsExercised
    Label Proceeds from Stock Options Exercised
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 6,505,000
  188. Description Amount of noncash expense for option under share-based payment arrangement.
    Fact StockOptionPlanExpense
    Label Stock or Unit Option Plan Expense
    Start 2016-10-01
    Taxonomy us-gaap
    Unit USD
    Val 4,171,000

Facts up to 2017-02-10

Description Aggregate dividends paid during the period for each share of common stock outstanding.
Fact CommonStockDividendsPerShareCashPaid
Frame CY2016Q4I
Label Common Stock, Dividends, Per Share, Cash Paid
Taxonomy us-gaap
Unit USD/shares
Val 0.15

Facts up to 2016-12-31

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 118,456,000

Facts up to 2016-09-30

  1. 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 291,503,000
  2. 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 20,895,000
  3. 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 1,289,000
  4. Description Value received from shareholders in common stock-related transactions that are in excess of par value or stated value and amounts received from other stock-related transactions. Includes only common stock transactions (excludes preferred stock transactions). May be called contributed capital, capital in excess of par, capital surplus, or paid-in capital.
    Fact AdditionalPaidInCapitalCommonStock
    Label Additional Paid in Capital, Common Stock
    Taxonomy us-gaap
    Unit USD
    Val 1,648,388,000
  5. Description Carrying amount as of the balance sheet date of investments in land and buildings held for sale, excluding real estate considered to be inventory of the entity.
    Fact RealEstateHeldforsale
    Label Real Estate Held-for-sale
    Taxonomy us-gaap
    Unit USD
    Val 29,027,000
  6. 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 44,626,971
  7. Description The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.
    Fact FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
    Label Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment
    Taxonomy us-gaap
    Unit USD
    Val 3,549,000
  8. Description Amount of liabilities incurred and payable to vendors for goods and services received, and accrued liabilities classified as other.
    Fact AccountsPayableAndOtherAccruedLiabilities
    Label Accounts Payable and Other Accrued Liabilities
    Taxonomy us-gaap
    Unit USD
    Val 188,582,000
  9. Description Carrying amount of accumulated prepayments received by financial institutions from borrowers for taxes (for example, property taxes) and insurance (for example, property and catastrophe) which will periodically be remitted to the appropriate governmental agency or vendor on behalf of the borrower.
    Fact AdvancePaymentsByBorrowersForTaxesAndInsurance
    Label Advance Payments by Borrowers for Taxes and Insurance
    Taxonomy us-gaap
    Unit USD
    Val 42,898,000
  10. 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 113,494,000
  11. 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 281,951,000
  12. Description Amount of financing receivable past due.
    Fact FinancingReceivableRecordedInvestmentPastDue
    Label Financing Receivable, Past Due
    Taxonomy us-gaap
    Unit USD
    Val 68,280,000
  13. Description Amount of assets classified as other.
    Fact OtherAssets
    Label Other Assets
    Taxonomy us-gaap
    Unit USD
    Val 199,271,000
  14. 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 857,684,000
  15. 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 9,910,920,000
  16. 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 10,637,000
  17. Description Federal Home Loan Bank (FHLB) stock represents an equity interest in a FHLB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity).
    Fact FederalHomeLoanBankStock
    Label Federal Home Loan Bank Stock
    Taxonomy us-gaap
    Unit USD
    Val 117,205,000
  18. 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
  19. Description Increases to the indemnification asset due to accretion of the loan discount relating to loss sharing agreements with the Federal Deposit Insurance Corporation (FDIC).
    Fact FDICIndemnificationAssetAccretionOfDiscount
    Label FDIC Indemnification Asset, Accretion of Discount
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 236,000
  20. 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 37,669,000
  21. Description Amount of time deposit liabilities, including certificates of deposit.
    Fact TimeDeposits
    Label Time Deposits
    Taxonomy us-gaap
    Unit USD
    Val 4,595,260,000
  22. 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 14,888,063,000
  23. 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 943,877,000
  24. Description Amount of undisbursed portion of the loan receivable balance (loans in process). Excludes loans and leases covered under loss sharing agreements.
    Fact LoansAndLeasesReceivableLoansInProcess
    Label Loans and Leases Receivable, Loans in Process
    Taxonomy us-gaap
    Unit USD
    Val 879,484,000
  25. Description Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.
    Fact InvestmentsFairValueDisclosure
    Label Investments, Fair Value Disclosure
    Taxonomy us-gaap
    Unit USD
    Val 3,364,450,000
  26. 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 1,922,894,000
  27. Description Sum of the carrying amounts as of the balance sheet date of all investments.
    Fact Investments
    Label Investments
    Taxonomy us-gaap
    Unit USD
    Val 3,326,783,000
  28. 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 304,197,000
  29. 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 11,712,000
  30. 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 25,422,000
  31. Description Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.
    Fact CashAndCashEquivalentsAtCarryingValue
    Label Cash and Cash Equivalents, at Carrying Value
    Taxonomy us-gaap
    Unit USD
    Val 450,368,000
  32. 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 11,926,000
  33. Description Carrying amount as of the balance sheet date of income taxes previously overpaid to tax authorities (such as U.S. Federal, state and local tax authorities) representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes. Also called income tax refund receivable.
    Fact IncomeTaxReceivable
    Label Income Taxes Receivable
    Taxonomy us-gaap
    Unit USD
    Val 16,047,000
  34. Description Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.
    Fact ImpairedFinancingReceivableRecordedInvestment
    Label Impaired Financing Receivable, Recorded Investment
    Taxonomy us-gaap
    Unit USD
    Val 285,243,000
  35. 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 10,950,608,000
  36. Description Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.
    Fact FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
    Label Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment
    Taxonomy us-gaap
    Unit USD
    Val 366,000
  37. 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 134,307,818
  38. 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 55,554,000
  39. 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 1,417,599,000
  40. 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 12,912,332,000
  41. 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 14,888,063,000
  42. 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 739,686,000
  43. 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 553,487,000
  44. Description Amount of deferred fees paid by borrowers and unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of loans that are being amortized into income as an adjustment to yield. Excludes amounts for loans and leases covered under loss sharing agreements.
    Fact UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums
    Label Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums
    Taxonomy us-gaap
    Unit USD
    Val -46,710,000
  45. Description Amount of financing receivable not past due.
    Fact FinancingReceivableRecordedInvestmentCurrent
    Label Financing Receivable, Not Past Due
    Taxonomy us-gaap
    Unit USD
    Val 10,002,844,000
  46. 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 208,123,000
  47. Description Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.
    Fact ImpairedFinancingReceivableUnpaidPrincipalBalance
    Label Impaired Financing Receivable, Unpaid Principal Balance
    Taxonomy us-gaap
    Unit USD
    Val 321,743,000
  48. 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 1,909,184,000
  49. 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 1,975,731,000
  50. 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 134,308,000
  51. Description Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.
    Fact ImpairedFinancingReceivableAverageRecordedInvestment
    Label Impaired Financing Receivable, Average Recorded Investment
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 265,771,000
  52. Description Amount of allowance for credit losses related to recorded investment.
    Fact ImpairedFinancingReceivableRelatedAllowance
    Label Impaired Financing Receivable, Related Allowance
    Taxonomy us-gaap
    Unit USD
    Val 3,915,000
  53. 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 -11,156,000
  54. Description Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.
    Fact CommonStockSharesOutstanding
    Label Common Stock, Shares, Outstanding
    Taxonomy us-gaap
    Unit shares
    Val 89,680,847
  55. 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 300,000,000
  56. Description Including both current and noncurrent portions, Federal Home Loan Bank borrowings initially due beyond one year or beyond the normal operating cycle if longer.
    Fact FederalHomeLoanBankAdvancesLongTerm
    Label Long-term Federal Home Loan Bank Advances
    Taxonomy us-gaap
    Unit USD
    Val 2,080,000,000

Facts up to 2016-03-31

  1. 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 2015-10-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 0.83
  2. 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 2016-01-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 0.45
  3. 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 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 40,816,000
  4. 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 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 21,499,000
  5. Description The net amount of operating interest income (expense).
    Fact InterestIncomeExpenseNet
    Label Interest Income (Expense), Net
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 213,194,000
  6. Description The net amount of operating interest income (expense).
    Fact InterestIncomeExpenseNet
    Label Interest Income (Expense), Net
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 106,325,000
  7. Description The net cash inflow or outflow for the increase (decrease) in the beginning and end of period deposits balances.
    Fact IncreaseDecreaseInDeposits
    Label Increase (Decrease) in Deposits
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val -88,243,000
  8. Description Amount, after troubled debt restructuring, of modified financing receivable.
    Fact FinancingReceivableModificationsPostModificationRecordedInvestment2
    Label Financing Receivable, Troubled Debt Restructuring, Postmodification
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 2,795,000
  9. Description Amount, after troubled debt restructuring, of modified financing receivable.
    Fact FinancingReceivableModificationsPostModificationRecordedInvestment2
    Frame CY2016Q1
    Label Financing Receivable, Troubled Debt Restructuring, Postmodification
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,101,000
  10. Description Amount after tax and reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss), attributable to parent entity.
    Fact OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent
    Label Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax, Portion Attributable to Parent
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val -6,760,000
  11. Description Amount after tax and reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss), attributable to parent entity.
    Fact OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent
    Frame CY2016Q1
    Label Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax, Portion Attributable to Parent
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val -8,528,000
  12. Description Amount after tax and reclassification adjustments of other comprehensive income (loss).
    Fact OtherComprehensiveIncomeLossNetOfTax
    Label Other Comprehensive Income (Loss), Net of Tax
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val -8,939,000
  13. 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 -4,154,000
  14. 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 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  15. Description Amount of increase in allowance for credit loss on financing receivable from recovery.
    Fact FinancingReceivableAllowanceForCreditLossesRecovery
    Label Financing Receivable, Allowance for Credit Loss, Recovery
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 8,649,000
  16. Description Amount of increase in allowance for credit loss on financing receivable from recovery.
    Fact FinancingReceivableAllowanceForCreditLossesRecovery
    Frame CY2016Q1
    Label Financing Receivable, Allowance for Credit Loss, Recovery
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 5,456,000
  17. Description Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.
    Fact OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax
    Label Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 1,266,000
  18. Description Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.
    Fact OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax
    Frame CY2016Q1
    Label Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val -2,542,000
  19. Description Amount of cash outflow to acquire Federal Reserve Bank (FRB) stock.
    Fact PaymentsToAcquireFederalReserveStock
    Label Payments to Acquire Federal Reserve Bank Stock
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 32,329,000
  20. 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 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val -28,387,000
  21. Description Number of financing receivables that have been modified by troubled debt restructurings.
    Fact FinancingReceivableModificationsNumberOfContracts2
    Label Financing Receivable, Modifications, Number of Contracts
    Start 2015-10-01
    Taxonomy us-gaap
    Unit contract
    Val 15
  22. Description Number of financing receivables that have been modified by troubled debt restructurings.
    Fact FinancingReceivableModificationsNumberOfContracts2
    Frame CY2016Q1
    Label Financing Receivable, Modifications, Number of Contracts
    Start 2016-01-01
    Taxonomy us-gaap
    Unit contract
    Val 7
  23. Description Amount of expense for Federal Deposit Insurance Corporation (FDIC) insurance.
    Fact FederalDepositInsuranceCorporationPremiumExpense
    Label Federal Deposit Insurance Corporation Premium Expense
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 5,374,000
  24. Description Amount of expense for Federal Deposit Insurance Corporation (FDIC) insurance.
    Fact FederalDepositInsuranceCorporationPremiumExpense
    Frame CY2016Q1
    Label Federal Deposit Insurance Corporation Premium Expense
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 2,785,000
  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 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 82,536,000
  26. Description The fair value of stock issued in noncash financing activities.
    Fact StockIssued1
    Label Stock Issued
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  27. Description Amount, before troubled debt restructuring, of financing receivable to be modified.
    Fact FinancingReceivableModificationsPreModificationRecordedInvestment2
    Label Financing Receivable, Troubled Debt Restructuring, Premodification
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 2,795,000
  28. Description Amount, before troubled debt restructuring, of financing receivable to be modified.
    Fact FinancingReceivableModificationsPreModificationRecordedInvestment2
    Frame CY2016Q1
    Label Financing Receivable, Troubled Debt Restructuring, Premodification
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,101,000
  29. Description Aggregate amount of interest expense on all borrowings.
    Fact InterestExpenseBorrowings
    Label Interest Expense, Borrowings
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 31,205,000
  30. Description Aggregate amount of interest expense on all borrowings.
    Fact InterestExpenseBorrowings
    Frame CY2016Q1
    Label Interest Expense, Borrowings
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 15,667,000
  31. Description Amount of noninterest expense classified as other.
    Fact OtherNoninterestExpense
    Label Other Noninterest Expense
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 15,937,000
  32. Description Amount of noninterest expense classified as other.
    Fact OtherNoninterestExpense
    Frame CY2016Q1
    Label Other Noninterest Expense
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 6,541,000
  33. 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 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 67,882,000
  34. 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 37,569,000
  35. 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 109,919,000
  36. Description Amount of writeoff of financing receivable, charged against allowance for credit loss.
    Fact FinancingReceivableAllowanceForCreditLossesWriteOffs
    Label Financing Receivable, Allowance for Credit Loss, Writeoff
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 4,059,000
  37. Description Amount of writeoff of financing receivable, charged against allowance for credit loss.
    Fact FinancingReceivableAllowanceForCreditLossesWriteOffs
    Frame CY2016Q1
    Label Financing Receivable, Allowance for Credit Loss, Writeoff
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,938,000
  38. Description Amount of interest income or expense, including any amortization and accretion (as applicable) of discounts and premiums, including consideration of the provisions for loan, lease, credit, and other related losses.
    Fact InterestIncomeExpenseAfterProvisionForLoanLoss
    Label Interest Income (Expense), after Provision for Loan Loss
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 214,694,000
  39. Description Amount of interest income or expense, including any amortization and accretion (as applicable) of discounts and premiums, including consideration of the provisions for loan, lease, credit, and other related losses.
    Fact InterestIncomeExpenseAfterProvisionForLoanLoss
    Frame CY2016Q1
    Label Interest Income (Expense), after Provision for Loan Loss
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 107,825,000
  40. 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 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 58,883,000
  41. 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 29,184,000
  42. Description Amount of operating interest income, including amortization and accretion of premiums and discounts, on securitized, pass-through debt securities collateralized by real estate mortgage loans.
    Fact InterestIncomeSecuritiesMortgageBacked
    Label Interest Income, Securities, Mortgage Backed
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 33,833,000
  43. Description Amount of operating interest income, including amortization and accretion of premiums and discounts, on securitized, pass-through debt securities collateralized by real estate mortgage loans.
    Fact InterestIncomeSecuritiesMortgageBacked
    Frame CY2016Q1
    Label Interest Income, Securities, Mortgage Backed
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 16,846,000
  44. 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 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  45. Description Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects.
    Fact GainLossOnDerivativeInstrumentsNetPretax
    Label Gain (Loss) on Derivative Instruments, Net, Pretax
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  46. Description The total amount of noninterest income which may be derived from: (1) fees and commissions; (2) premiums earned; (3) insurance policy charges; (4) the sale or disposal of assets; and (5) other sources not otherwise specified.
    Fact NoninterestIncome
    Label Noninterest Income
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 21,364,000
  47. Description The total amount of noninterest income which may be derived from: (1) fees and commissions; (2) premiums earned; (3) insurance policy charges; (4) the sale or disposal of assets; and (5) other sources not otherwise specified.
    Fact NoninterestIncome
    Frame CY2016Q1
    Label Noninterest Income
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 10,729,000
  48. Description Amount before tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).
    Fact OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax
    Label Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val -10,688,000
  49. Description Amount before tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).
    Fact OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax
    Frame CY2016Q1
    Label Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val -13,483,000
  50. Description The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.
    Fact ProceedsFromIssuanceOfDebt
    Label Proceeds from Issuance of Debt
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 818,000,000
  51. Description Amount of cash paid for interest, including, but not limited to, capitalized interest and payment to settle zero-coupon bond attributable to accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount; classified as operating and investing activities.
    Fact InterestPaid
    Label Interest Paid, Including Capitalized Interest, Operating and Investing Activities
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 57,325,000
  52. Description Earnings on or other increases in the value of the cash surrender value of bank owned life insurance policies.
    Fact BankOwnedLifeInsuranceIncome
    Label Bank Owned Life Insurance Income
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 2,159,000
  53. Description The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.
    Fact RepaymentsOfDebt
    Label Repayments of Debt
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 668,000,000
  54. Description Aggregate dividends paid during the period for each share of common stock outstanding.
    Fact CommonStockDividendsPerShareCashPaid
    Label Common Stock, Dividends, Per Share, Cash Paid
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 0.27
  55. Description Aggregate dividends paid during the period for each share of common stock outstanding.
    Fact CommonStockDividendsPerShareCashPaid
    Label Common Stock, Dividends, Per Share, Cash Paid
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 0.14
  56. Description The amount of expenses incurred in the period for information technology and data processing products and services.
    Fact InformationTechnologyAndDataProcessing
    Label Information Technology and Data Processing
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 16,163,000
  57. Description The amount of expenses incurred in the period for information technology and data processing products and services.
    Fact InformationTechnologyAndDataProcessing
    Frame CY2016Q1
    Label Information Technology and Data Processing
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 7,453,000
  58. Description Includes amounts charged depositors for: (1) maintenance of their accounts (maintenance charges); (2) failure to maintain specified minimum balances on account; (3) exceeding the number of checks or transactions allowed to be processed in a given period; (4) checks drawn on no minimum balance deposit accounts; (5) withdrawals from nontransaction deposit accounts; (6) closing savings accounts before a specified minimum period of time has elapsed; (7) accounts which have remained inactive for extended periods of time or which have become dormant; (8) use of automated teller machines or remote service units; (9) checks drawn against insufficient funds that the bank assesses regardless of whether it decides to pay, return or hold the check; (10) issuing stop payment orders; (11) certifying checks; and (12) accumulating or disbursing funds deposited in IRAs or Keogh Plan accounts when not handled by the bank's trust department. This item does not include penalties assessed on the early withdrawal of time deposits.
    Fact FeesAndCommissionsDepositorAccounts
    Label Fees and Commissions, Depositor Accounts (Deprecated 2018-01-31)
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 11,267,000
  59. Description Includes amounts charged depositors for: (1) maintenance of their accounts (maintenance charges); (2) failure to maintain specified minimum balances on account; (3) exceeding the number of checks or transactions allowed to be processed in a given period; (4) checks drawn on no minimum balance deposit accounts; (5) withdrawals from nontransaction deposit accounts; (6) closing savings accounts before a specified minimum period of time has elapsed; (7) accounts which have remained inactive for extended periods of time or which have become dormant; (8) use of automated teller machines or remote service units; (9) checks drawn against insufficient funds that the bank assesses regardless of whether it decides to pay, return or hold the check; (10) issuing stop payment orders; (11) certifying checks; and (12) accumulating or disbursing funds deposited in IRAs or Keogh Plan accounts when not handled by the bank's trust department. This item does not include penalties assessed on the early withdrawal of time deposits.
    Fact FeesAndCommissionsDepositorAccounts
    Frame CY2016Q1
    Label Fees and Commissions, Depositor Accounts (Deprecated 2018-01-31)
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 5,350,000
  60. Description The increase (decrease) during the reporting period in the amount due from borrowers for interest payments.
    Fact IncreaseDecreaseInAccruedInterestReceivableNet
    Label Increase (Decrease) in Accrued Interest Receivable, Net
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val -2,858,000
  61. 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 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 226,074,000
  62. 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 113,211,000
  63. Description Value, after forfeiture, of shares issued under share-based payment arrangement. Excludes employee stock ownership plan (ESOP).
    Fact StockIssuedDuringPeriodValueShareBasedCompensation
    Label Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 600,000
  64. Description The net gain (loss) realized from the sale, exchange, redemption, or retirement of securities, not separately or otherwise categorized as trading, available-for-sale, or held-to-maturity.
    Fact GainLossOnSaleOfSecuritiesNet
    Label Gain (Loss) on Sale of Securities, Net (Deprecated 2018-01-31)
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  65. Description The net gain (loss) realized from the sale, exchange, redemption, or retirement of securities, not separately or otherwise categorized as trading, available-for-sale, or held-to-maturity.
    Fact GainLossOnSaleOfSecuritiesNet
    Frame CY2016Q1
    Label Gain (Loss) on Sale of Securities, Net (Deprecated 2018-01-31)
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  66. Description Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property.
    Fact GainLossOnSaleOfPropertyPlantEquipment
    Label Gain (Loss) on Disposition of Property Plant Equipment
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 6,629,000
  67. Description Amount of increase (decrease) in accrued expenses, and obligations classified as other.
    Fact IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities
    Label Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 49,710,000
  68. Description The increase (decrease) during the reporting period in the amounts payable to taxing authorities for taxes that are based on the reporting entity's earnings, net of amounts receivable from taxing authorities for refunds of overpayments or recoveries of income taxes.
    Fact IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable
    Label Increase (Decrease) in Income Taxes Payable, Net of Income Taxes Receivable
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 8,163,000
  69. 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 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 117,637,000
  70. 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 63,222,000
  71. Description Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.
    Fact PaymentsOfDividendsCommonStock
    Label Payments of Ordinary Dividends, Common Stock
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 24,735,000
  72. Description The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income.
    Fact IncomeTaxesPaid
    Label Income Taxes Paid
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 27,245,000
  73. Description The noninterest income derived from mortgage banking activities (fees and commissions), excluding fees earned from servicing third-party assets.
    Fact FeesAndCommissionsMortgageBanking
    Label Fees and Commissions, Mortgage Banking (Deprecated 2018-01-31)
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 2,683,000
  74. Description The noninterest income derived from mortgage banking activities (fees and commissions), excluding fees earned from servicing third-party assets.
    Fact FeesAndCommissionsMortgageBanking
    Frame CY2016Q1
    Label Fees and Commissions, Mortgage Banking (Deprecated 2018-01-31)
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,166,000
  75. 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 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val -115,126,000
  76. 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 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 5,399,000
  77. 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 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val -7,965,000
  78. Description Amount of tax expense (benefit), after reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss), attributable to parent entity.
    Fact OtherComprehensiveIncomeDerivativesQualifyingAsHedgesTaxPortionAttributableToParent
    Label Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax, Portion Attributable to Parent
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val -3,928,000
  79. Description Amount of tax expense (benefit), after reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss), attributable to parent entity.
    Fact OtherComprehensiveIncomeDerivativesQualifyingAsHedgesTaxPortionAttributableToParent
    Frame CY2016Q1
    Label Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax, Portion Attributable to Parent
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val -4,955,000
  80. Description Aggregate amount of interest expense on all deposits.
    Fact InterestExpenseDeposits
    Label Interest Expense, Deposits
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 25,788,000
  81. 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 13,071,000
  82. Description Amount of the cost of borrowed funds accounted for as interest expense.
    Fact InterestExpense
    Label Interest Expense
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 56,993,000
  83. Description Amount of the cost of borrowed funds accounted for as interest expense.
    Fact InterestExpense
    Label Interest Expense
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 28,738,000
  84. Description Amount before tax of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.
    Fact OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax
    Label Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  85. Description Amount before tax of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.
    Fact OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax
    Frame CY2016Q1
    Label Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  86. Description Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.
    Fact CashAndCashEquivalentsAtCarryingValue
    Frame CY2016Q1I
    Label Cash and Cash Equivalents, at Carrying Value
    Taxonomy us-gaap
    Unit USD
    Val 276,084,000
  87. Description Amount of revenue earned, classified as other, excluding interest income.
    Fact NoninterestIncomeOtherOperatingIncome
    Label Noninterest Income, Other Operating Income
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 7,414,000
  88. Description Amount of revenue earned, classified as other, excluding interest income.
    Fact NoninterestIncomeOtherOperatingIncome
    Frame CY2016Q1
    Label Noninterest Income, Other Operating Income
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 4,213,000
  89. Description Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.
    Fact TreasuryStockValueAcquiredCostMethod
    Label Treasury Stock, Value, Acquired, Cost Method
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 44,447,000
  90. 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 2015-10-01
    Taxonomy us-gaap
    Unit shares
    Val 92,385,367
  91. 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 91,777,771
  92. Description The cash outflow associated with purchasing loans held for investment purposes during the period.
    Fact PaymentsToAcquireLoansHeldForInvestment
    Label Payments to Acquire Loans Held-for-investment
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 51,646,000
  93. Description Amount of cash outflow (inflow) from acquisition (sale) of Federal Home Loan Bank (FHLBank) stock.
    Fact PaymentsForProceedsFromFederalHomeLoanBankStock
    Label Payments for (Proceeds from) Federal Home Loan Bank Stock
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val -26,340,000
  94. Description Amount before accretion (amortization) of purchase discount (premium) of interest income and dividend income on nonoperating securities.
    Fact InvestmentIncomeInterestAndDividend
    Label Investment Income, Interest and Dividend
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 270,187,000
  95. Description Amount before accretion (amortization) of purchase discount (premium) of interest income and dividend income on nonoperating securities.
    Fact InvestmentIncomeInterestAndDividend
    Frame CY2016Q1
    Label Investment Income, Interest and Dividend
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 135,063,000
  96. Description Amount of expense related to estimated loss from loan and lease transactions.
    Fact ProvisionForLoanAndLeaseLosses
    Label Provision for Loan and Lease Losses
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val -1,500,000
  97. Description Amount of expense related to estimated loss from loan and lease transactions.
    Fact ProvisionForLoanAndLeaseLosses
    Label Provision for Loan and Lease Losses
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val -1,500,000
  98. 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 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 328,188,000
  99. Description Amount of cash outflow for payment of premium on corporate-owned life insurance policy, classified as investing activities. Includes, but is not limited to, bank-owned life insurance policy.
    Fact PaymentsToAcquireLifeInsurancePolicies
    Label Payment to Acquire Life Insurance Policy, Investing Activities
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 100,000,000
  100. Description Value of stock related to Restricted Stock Awards issued during the period, net of the stock value of such awards forfeited.
    Fact StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures
    Label Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 2,082,000
  101. 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 2015-10-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 0.83
  102. 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 2016-01-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 0.45
  103. Description The cash inflow from the sale of formerly productive land held for sale, anything permanently fixed to it, including buildings, structures on it, and so forth.
    Fact ProceedsFromSaleOfPropertyHeldForSale
    Label Proceeds from Sale of Property Held-for-sale
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 38,347,000
  104. 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 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 76,821,000
  105. 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 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 41,723,000
  106. Description The net realized gain (loss) on investments sold during the period, not including gains (losses) on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity, which, for cash flow reporting, is a component of proceeds from investing activities.
    Fact GainLossOnSaleOfInvestments
    Label Gain (Loss) on Sale of Investments
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  107. Description The cash outflow to reacquire common stock during the period.
    Fact PaymentsForRepurchaseOfCommonStock
    Label Payments for Repurchase of Common Stock
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 44,447,000
  108. 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 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 50,741,000
  109. Description Total aggregate amount of all noninterest expense.
    Fact NoninterestExpense
    Label Noninterest Expense
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 123,735,000
  110. Description Total aggregate amount of all noninterest expense.
    Fact NoninterestExpense
    Label Noninterest Expense
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 59,226,000
  111. 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 2015-10-01
    Taxonomy us-gaap
    Unit shares
    Val 92,860,052
  112. 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 92,147,998
  113. Description Amount of cash inflow for proceeds from settlement of corporate-owned life insurance policy, classified as investing activities. Includes, but is not limited to, bank-owned life insurance policy.
    Fact ProceedsFromLifeInsurancePolicies
    Label Proceeds from Life Insurance Policy
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  114. 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 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 24,735,000
  115. 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 1,962,460,000
  116. Description Amount after tax and reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities, attributable to parent entity. Excludes amounts related to other than temporary impairment (OTTI) loss.
    Fact OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent
    Label Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Parent
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val -2,179,000
  117. Description Amount after tax and reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities, attributable to parent entity. Excludes amounts related to other than temporary impairment (OTTI) loss.
    Fact OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent
    Frame CY2016Q1
    Label Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Parent
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 4,374,000
  118. Description The net gain (loss) resulting from sales and other disposals of other real estate owned, increases (decreases) in the valuation allowance for foreclosed real estate, and write-downs of other real estate owned after acquisition or physical possession.
    Fact GainsLossesOnSalesOfOtherRealEstate
    Label Gains (Losses) on Sales of Other Real Estate
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 5,314,000
  119. Description The net gain (loss) resulting from sales and other disposals of other real estate owned, increases (decreases) in the valuation allowance for foreclosed real estate, and write-downs of other real estate owned after acquisition or physical possession.
    Fact GainsLossesOnSalesOfOtherRealEstate
    Frame CY2016Q1
    Label Gains (Losses) on Sales of Other Real Estate
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 3,894,000
  120. 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 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 135,548,000
  121. Description Amount, before tax and 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 OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax
    Label OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment and Tax
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val -3,445,000
  122. Description Amount, before tax and 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 OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax
    Frame CY2016Q1
    Label OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment and Tax
    Start 2016-01-01
    Taxonomy us-gaap
    Unit USD
    Val 6,916,000
  123. 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 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 17,561,000
  124. 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 8,969,000
  125. Description The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.
    Fact DepreciationDepletionAndAmortization
    Label Depreciation, Depletion and Amortization
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 11,082,000
  126. Description The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.
    Fact ProceedsFromSaleOfPropertyPlantAndEquipment
    Label Proceeds from Sale of Property, Plant, and Equipment
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 40,000
  127. Description Amount of increase (decrease) in prepayments received from borrowers for taxes and insurance remitted to the appropriate tax authority or insurer on behalf of the borrower.
    Fact IncreaseDecreaseInAdvancePaymentsByBorrowersForTaxesAndInsurance
    Label Increase (Decrease) in Advance Payments by Borrowers for Taxes and Insurance
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val -26,361,000
  128. Description Amount of increase (decrease) in operating assets classified as other.
    Fact IncreaseDecreaseInOtherOperatingAssets
    Label Increase (Decrease) in Other Operating Assets
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 5,551,000
  129. Description The cash inflow associated with the sale of securities that had been designated as held-to-maturity. Excludes proceeds from maturities, prepayments and calls by the issuer.
    Fact ProceedsFromSaleOfHeldToMaturitySecurities
    Label Proceeds from Sale of Held-to-maturity Securities
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  130. Description Amount of cash inflow from exercise of option under share-based payment arrangement.
    Fact ProceedsFromStockOptionsExercised
    Label Proceeds from Stock Options Exercised
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 5,399,000
  131. Description Amount of noncash expense for option under share-based payment arrangement.
    Fact StockOptionPlanExpense
    Label Stock or Unit Option Plan Expense
    Start 2015-10-01
    Taxonomy us-gaap
    Unit USD
    Val 600,000

Facts up to 2015-12-31

Description Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.
Fact FinancingReceivableAllowanceForCreditLosses
Frame CY2015Q4I
Label Financing Receivable, Allowance for Credit Loss
Taxonomy us-gaap
Unit USD
Val 107,901,000

Facts up to 2015-09-30

  1. 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 106,829,000
  2. Description Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.
    Fact CashAndCashEquivalentsAtCarryingValue
    Label Cash and Cash Equivalents, at Carrying Value
    Taxonomy us-gaap
    Unit USD
    Val 284,049,000
  3. 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 1,955,679,000

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: WaFd Inc., Seattle, United States.