Quarterly report pursuant to Section 13 or 15(d)

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value (Details)

v2.4.1.9
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Mar. 31, 2014
Dec. 31, 2013
Notional Disclosures [Abstract]        
Derivative, Notional Amount $ 33,709,043invest_DerivativeNotionalAmount $ 48,115,523invest_DerivativeNotionalAmount $ 43,576,146invest_DerivativeNotionalAmount $ 37,366,610invest_DerivativeNotionalAmount
Inverse Interest-Only Securities [Member]        
Notional Disclosures [Abstract]        
Derivative, Notional Amount 1,106,210invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= two_InverseInterestOnlySecuritiesMember 		1,168,226invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= two_InverseInterestOnlySecuritiesMember 		1,412,374invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= two_InverseInterestOnlySecuritiesMember 		1,525,845invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= two_InverseInterestOnlySecuritiesMember
Interest Rate Swap [Member]        
Notional Disclosures [Abstract]        
Derivative, Notional Amount 19,929,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember 		18,584,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember 		21,663,148invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember 		19,619,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
Credit Default Swap [Member]        
Notional Disclosures [Abstract]        
Derivative, Notional Amount 125,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditDefaultSwapMember 		125,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditDefaultSwapMember 		125,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditDefaultSwapMember 		427,073invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditDefaultSwapMember
Interest Rate Swaption [Member]        
Notional Disclosures [Abstract]        
Derivative, Notional Amount 12,960,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwaptionMember 		12,410,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwaptionMember 		9,500,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwaptionMember 		5,130,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwaptionMember
Forward Contracts [Member]        
Notional Disclosures [Abstract]        
Derivative, Notional Amount 2,496,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember 		1,325,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember 		1,022,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember 		603,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember
Options Held [Member]        
Notional Disclosures [Abstract]        
Derivative, Notional Amount 2,500,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_OptionMember 		2,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_OptionMember 		1,500,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_OptionMember 		0invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_OptionMember
Swap [Member]        
Derivative, Fair Value, Net [Abstract]        
Derivative, Fair Value, Net 1,236us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_SwapMember 		1,530us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_SwapMember 		   
Notional Disclosures [Abstract]        
Derivative, Notional Amount 3,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_SwapMember 		14,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_SwapMember 		10,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_SwapMember 		10,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_SwapMember
Total Return Swap [Member]        
Notional Disclosures [Abstract]        
Derivative, Notional Amount 877,529invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_TotalReturnSwapMember 		598,459invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_TotalReturnSwapMember 		243,987invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_TotalReturnSwapMember 		49,629invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_TotalReturnSwapMember
Forward Purchase Commitments [Member]        
Notional Disclosures [Abstract]        
Derivative, Notional Amount 707,304invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_LoanPurchaseCommitmentsMember 		554,838invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_LoanPurchaseCommitmentsMember 		153,637invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_LoanPurchaseCommitmentsMember 		12,063invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_LoanPurchaseCommitmentsMember
Derivative Financial Instruments, Assets [Member]        
Derivative, Fair Value, Net [Abstract]        
Derivative, Fair Value, Net 362,646us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsAssetsMember 		380,791us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsAssetsMember 		   
Notional Disclosures [Abstract]        
Derivative, Notional Amount 26,795,748invest_DerivativeNotionalAmount
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsAssetsMember 		36,315,523invest_DerivativeNotionalAmount
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsAssetsMember 		   
Derivative Financial Instruments, Assets [Member] | Inverse Interest-Only Securities [Member]        
Derivative, Fair Value, Net [Abstract]        
Derivative, Fair Value, Net 189,875us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= two_InverseInterestOnlySecuritiesMember 		188,592us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= two_InverseInterestOnlySecuritiesMember 		   
Notional Disclosures [Abstract]        
Derivative, Notional Amount 1,106,210invest_DerivativeNotionalAmount
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= two_InverseInterestOnlySecuritiesMember 		1,168,226invest_DerivativeNotionalAmount
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= two_InverseInterestOnlySecuritiesMember 		   
Derivative Financial Instruments, Assets [Member] | Interest Rate Swap [Member]        
Derivative, Fair Value, Net [Abstract]        
Derivative, Fair Value, Net 49,485us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember 		55,471us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember 		   
Notional Disclosures [Abstract]        
Derivative, Notional Amount 9,614,000invest_DerivativeNotionalAmount
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember 		9,569,000invest_DerivativeNotionalAmount
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember 		   
Derivative Financial Instruments, Assets [Member] | Credit Default Swap [Member]        
Derivative, Fair Value, Net [Abstract]        
Derivative, Fair Value, Net 0us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditDefaultSwapMember 		0us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditDefaultSwapMember 		   
Notional Disclosures [Abstract]        
Derivative, Notional Amount 0invest_DerivativeNotionalAmount
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditDefaultSwapMember 		0invest_DerivativeNotionalAmount
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditDefaultSwapMember 		   
Derivative Financial Instruments, Assets [Member] | Interest Rate Swaption [Member]        
Derivative, Fair Value, Net [Abstract]        
Derivative, Fair Value, Net 108,348us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwaptionMember 		121,591us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwaptionMember 		   
Notional Disclosures [Abstract]        
Derivative, Notional Amount 11,600,000invest_DerivativeNotionalAmount
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwaptionMember 		9,550,000invest_DerivativeNotionalAmount
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwaptionMember 		   
Derivative Financial Instruments, Assets [Member] | Forward Contracts [Member]        
Derivative, Fair Value, Net [Abstract]        
Derivative, Fair Value, Net 0us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember 		10,350us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember 		   
Notional Disclosures [Abstract]        
Derivative, Notional Amount 0invest_DerivativeNotionalAmount
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember 		875,000invest_DerivativeNotionalAmount
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember 		   
Derivative Financial Instruments, Assets [Member] | Options Held [Member]        
Derivative, Fair Value, Net [Abstract]        
Derivative, Fair Value, Net 0us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_OptionMember 		90us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_OptionMember 		   
Notional Disclosures [Abstract]        
Derivative, Notional Amount 0invest_DerivativeNotionalAmount
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_OptionMember 		2,000,000invest_DerivativeNotionalAmount
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_OptionMember 		   
Derivative Financial Instruments, Assets [Member] | Swap [Member]        
Derivative, Fair Value, Net [Abstract]        
Derivative, Fair Value, Net 1,236us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_SwapMember 		2,013us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_SwapMember 		   
Notional Disclosures [Abstract]        
Derivative, Notional Amount 3,000,000invest_DerivativeNotionalAmount
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_SwapMember 		12,000,000invest_DerivativeNotionalAmount
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_SwapMember 		   
Derivative Financial Instruments, Assets [Member] | Total Return Swap [Member]        
Derivative, Fair Value, Net [Abstract]        
Derivative, Fair Value, Net 12,299us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_TotalReturnSwapMember 		1,387us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_TotalReturnSwapMember 		   
Notional Disclosures [Abstract]        
Derivative, Notional Amount 877,529invest_DerivativeNotionalAmount
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_TotalReturnSwapMember 		598,459invest_DerivativeNotionalAmount
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_TotalReturnSwapMember 		   
Derivative Financial Instruments, Assets [Member] | Forward Purchase Commitments [Member]        
Derivative, Fair Value, Net [Abstract]        
Derivative, Fair Value, Net 1,403us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_LoanPurchaseCommitmentsMember 		1,297us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_LoanPurchaseCommitmentsMember 		   
Notional Disclosures [Abstract]        
Derivative, Notional Amount 598,009invest_DerivativeNotionalAmount
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_LoanPurchaseCommitmentsMember 		     
Derivative Financial Instruments, Liabilities [Member]        
Derivative, Fair Value, Net [Abstract]        
Derivative, Fair Value, Net (155,149)us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember 		(90,233)us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember 		   
Notional Disclosures [Abstract]        
Derivative, Notional Amount 16,905,295invest_DerivativeNotionalAmount
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember 		16,200,000invest_DerivativeNotionalAmount
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember 		   
Derivative Financial Instruments, Liabilities [Member] | Inverse Interest-Only Securities [Member]        
Derivative, Fair Value, Net [Abstract]        
Derivative, Fair Value, Net 0us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= two_InverseInterestOnlySecuritiesMember 		0us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= two_InverseInterestOnlySecuritiesMember 		   
Notional Disclosures [Abstract]        
Derivative, Notional Amount 0invest_DerivativeNotionalAmount
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= two_InverseInterestOnlySecuritiesMember 		0invest_DerivativeNotionalAmount
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= two_InverseInterestOnlySecuritiesMember 		   
Derivative Financial Instruments, Liabilities [Member] | Interest Rate Swap [Member]        
Derivative, Fair Value, Net [Abstract]        
Derivative, Fair Value, Net (126,063)us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember 		(65,392)us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember 		   
Notional Disclosures [Abstract]        
Derivative, Notional Amount 10,315,000invest_DerivativeNotionalAmount
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember 		9,015,000invest_DerivativeNotionalAmount
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember 		   
Derivative Financial Instruments, Liabilities [Member] | Credit Default Swap [Member]        
Derivative, Fair Value, Net [Abstract]        
Derivative, Fair Value, Net (1,460)us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditDefaultSwapMember 		(1,672)us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditDefaultSwapMember 		   
Notional Disclosures [Abstract]        
Derivative, Notional Amount 125,000invest_DerivativeNotionalAmount
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditDefaultSwapMember 		125,000invest_DerivativeNotionalAmount
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditDefaultSwapMember 		   
Derivative Financial Instruments, Liabilities [Member] | Interest Rate Swaption [Member]        
Derivative, Fair Value, Net [Abstract]        
Derivative, Fair Value, Net (3,840)us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwaptionMember 		(4,999)us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwaptionMember 		   
Notional Disclosures [Abstract]        
Derivative, Notional Amount 1,360,000invest_DerivativeNotionalAmount
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwaptionMember 		2,860,000invest_DerivativeNotionalAmount
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwaptionMember 		   
Derivative Financial Instruments, Liabilities [Member] | Forward Contracts [Member]        
Derivative, Fair Value, Net [Abstract]        
Derivative, Fair Value, Net (17,930)us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember 		(17,687)us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember 		   
Notional Disclosures [Abstract]        
Derivative, Notional Amount 2,496,000invest_DerivativeNotionalAmount
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember 		2,200,000invest_DerivativeNotionalAmount
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember 		   
Derivative Financial Instruments, Liabilities [Member] | Options Held [Member]        
Derivative, Fair Value, Net [Abstract]        
Derivative, Fair Value, Net (5,776)us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_OptionMember 		0us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_OptionMember 		   
Notional Disclosures [Abstract]        
Derivative, Notional Amount 2,500,000invest_DerivativeNotionalAmount
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_OptionMember 		0invest_DerivativeNotionalAmount
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_OptionMember 		   
Derivative Financial Instruments, Liabilities [Member] | Swap [Member]        
Derivative, Fair Value, Net [Abstract]        
Derivative, Fair Value, Net 0us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_SwapMember 		(483)us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_SwapMember 		   
Notional Disclosures [Abstract]        
Derivative, Notional Amount 0invest_DerivativeNotionalAmount
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_SwapMember 		2,000,000invest_DerivativeNotionalAmount
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_SwapMember 		   
Derivative Financial Instruments, Liabilities [Member] | Total Return Swap [Member]        
Derivative, Fair Value, Net [Abstract]        
Derivative, Fair Value, Net 0us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_TotalReturnSwapMember 		0us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_TotalReturnSwapMember 		   
Notional Disclosures [Abstract]        
Derivative, Notional Amount 0invest_DerivativeNotionalAmount
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_TotalReturnSwapMember 		0invest_DerivativeNotionalAmount
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_TotalReturnSwapMember 		   
Derivative Financial Instruments, Liabilities [Member] | Forward Purchase Commitments [Member]        
Derivative, Fair Value, Net [Abstract]        
Derivative, Fair Value, Net (80)us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_LoanPurchaseCommitmentsMember 		0us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_LoanPurchaseCommitmentsMember 		   
Notional Disclosures [Abstract]        
Derivative, Notional Amount $ 109,295invest_DerivativeNotionalAmount
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_LoanPurchaseCommitmentsMember 		$ 0invest_DerivativeNotionalAmount
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_LoanPurchaseCommitmentsMember