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Fair Value by Balance Sheet Grouping (Details) (USD $)
In Thousands, unless otherwise specified |
Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||
| Available-for-sale securities | $ 14,341,102us-gaap_AvailableForSaleSecurities | $ 12,256,727us-gaap_AvailableForSaleSecurities | ||
| Trading securities | 1,997,656us-gaap_TradingSecurities | 1,000,180us-gaap_TradingSecurities | ||
| Mortgage loans held-for-sale | 535,712us-gaap_LoansAndLeasesReceivableNetReportedAmount | 544,581us-gaap_LoansAndLeasesReceivableNetReportedAmount | 58,607us-gaap_LoansAndLeasesReceivableNetReportedAmount | 5,782us-gaap_LoansAndLeasesReceivableNetReportedAmount |
| Mortgage loans held-for-investment in securitization trusts | 1,744,746us-gaap_LoansAndLeasesReceivableNetReportedAmountOther | 792,390us-gaap_LoansAndLeasesReceivableNetReportedAmountOther | ||
| Mortgage servicing rights | 452,006us-gaap_ServicingAssetAtFairValueAmount | 514,402us-gaap_ServicingAssetAtFairValueAmount | 0us-gaap_ServicingAssetAtFairValueAmount | |
| Cash and cash equivalents | 1,005,792us-gaap_CashAndCashEquivalentsAtCarryingValue | 1,025,487us-gaap_CashAndCashEquivalentsAtCarryingValue | 821,108us-gaap_CashAndCashEquivalentsAtCarryingValue | 360,016us-gaap_CashAndCashEquivalentsAtCarryingValue |
| Restricted cash | 336,771us-gaap_RestrictedCashAndCashEquivalents | 401,647us-gaap_RestrictedCashAndCashEquivalents | ||
| Derivative assets | 380,791us-gaap_DerivativeFairValueOfDerivativeAsset | 549,859us-gaap_DerivativeFairValueOfDerivativeAsset | ||
| Federal Home Loan Bank Stock | 100,010us-gaap_FederalHomeLoanBankStock | 10us-gaap_FederalHomeLoanBankStock | ||
| Equity investments | 3,000us-gaap_CostMethodInvestments | 0us-gaap_CostMethodInvestments | ||
| Repurchase agreements | 12,932,463us-gaap_AssetsSoldUnderAgreementsToRepurchaseRepurchaseLiability | 12,250,450us-gaap_AssetsSoldUnderAgreementsToRepurchaseRepurchaseLiability | ||
| Collateralized borrowings in securitization trusts, at fair value | 1,209,663us-gaap_LongTermDebtFairValue | 639,731us-gaap_LongTermDebtFairValue | ||
| Federal Home Loan Bank advances | 2,500,000us-gaap_AdvancesFromFederalHomeLoanBanks | 0us-gaap_AdvancesFromFederalHomeLoanBanks | ||
| Derivative liabilities | 90,233us-gaap_DerivativeFairValueOfDerivativeLiability | 22,081us-gaap_DerivativeFairValueOfDerivativeLiability | ||
| Federal Home Loan Bank of Des Moines [Member] | ||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||
| Federal Home Loan Bank advances |
$ 2,500,000us-gaap_AdvancesFromFederalHomeLoanBanks / us-gaap_FederalHomeLoanBankAdvancesBranchOfFHLBBankAxis = us-gaap_FederalHomeLoanBankOfDesMoinesMember |
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- Definition
Amount of borrowings as of the balance sheet date from the Federal Home Loan Bank, which are primarily used to cover shortages in the required reserve balance and liquidity shortages. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount to be repaid to the counterparty to the repurchase agreement when the carrying amount (or market value, if higher than the carrying amount) of securities or other assets sold under the repurchase agreement exceeds 10 percent of total assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount, after adjustment, of cost-method investment. Adjustments include, but are not limited to, dividends received in excess of earnings after date of investment that are considered a return of investment and other than temporary impairments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
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). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of other loans and leases not otherwise specified in the taxonomy. Excludes loans and leases covered under loss sharing agreements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. No definition available.
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- Definition
The carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. This element is for unclassified presentations; for classified presentations there is a separate and distinct element. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of investments in debt and equity securities and other forms of securities that provide ownership interests classified as trading. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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