Quarterly report pursuant to Section 13 or 15(d)

Fair Value, Measurement Inputs, Disclosure (Details)

v2.4.0.8
Fair Value, Measurement Inputs, Disclosure (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Jun. 30, 2014
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Dec. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Trading Securities Categorized as Level 1 Assets 100.00%          
Available-for-sale Securities Categorized as Level 2 Assets 100.00%          
Assets Reported at Fair Value, Available-for-sale Securities 72.90%          
Assets Reported at Fair Value, Trading Securities 11.40%          
Mortgage Loans Held-for-sale Categorized as Level 2 Assets 94.10%          
Mortgage Loans Held-for-sale Categorized as Level 3 Assets 5.90%          
Mortgage Loans Held-for-investment Categorized as Level 2 Assets 100.00%          
Mortgage Servicing Rights Categorized as Level 3 Assets 100.00%          
Interest Rate Swaps, Swaptions and Credit Default Swaps Categorized as Level 2 Assets (Liabilities) 100.00%          
Inverse Interest-only Securities Categorized as Level 2 Assets 100.00%          
Agency To-be-Announced Securities Categorized as Level 1 Assets (Liabilities) 100.00%          
Derivative, Notional Amount $ 57,015,981 $ 43,379,217 $ 37,366,610 $ 36,472,401 $ 44,262,605 $ 22,377,656
Forward Purchase Commitments Categorized as Level 2 Assets (Liabilities) 100.00%          
Collateralized Borrowings in Securitization Trust Categorized as Level 2 Liabilities 100.00%          
Available-for-sale Securities 12,697,908   12,256,727      
Trading Securities 1,993,124   1,000,180      
Mortgage servicing rights 498,466 500,490 514,402 15,703 1,452 0
Fair Value, Measurements, Recurring [Member]
           
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Available-for-sale Securities 12,697,908   12,256,727      
Trading Securities 1,993,124   1,000,180      
Mortgage loans held-for-sale 445,065   544,581      
Mortgage loans held-for-investment in securitization trust 1,428,890   792,390      
Derivative assets 353,893   549,859      
Mortgage servicing rights 498,466   514,402      
Assets, Fair Value Disclosure 17,417,346   15,658,139      
Collateralized borrowings in securitization trust 938,506   639,731      
Derivative liabilities 4,221   22,081      
Liabilities, Fair Value Disclosure 942,727   661,812      
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
           
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Available-for-sale Securities 0   0      
Trading Securities 1,993,124   1,000,180      
Mortgage loans held-for-sale 0   0      
Mortgage loans held-for-investment in securitization trust 0   0      
Derivative assets 4,101   33,425      
Mortgage servicing rights 0   0      
Assets, Fair Value Disclosure 1,997,225   1,033,605      
Collateralized borrowings in securitization trust 0   0      
Derivative liabilities 2,396   125      
Liabilities, Fair Value Disclosure 2,396   125      
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
           
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Available-for-sale Securities 12,697,908   12,256,727      
Trading Securities 0   0      
Mortgage loans held-for-sale 418,719   119,855      
Mortgage loans held-for-investment in securitization trust 1,428,890   792,390      
Derivative assets 349,792   516,434      
Mortgage servicing rights 0   0      
Assets, Fair Value Disclosure 14,895,309   13,685,406      
Collateralized borrowings in securitization trust 938,506   639,731      
Derivative liabilities 1,825   21,956      
Liabilities, Fair Value Disclosure 940,331   661,687      
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
           
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Available-for-sale Securities 0   0      
Trading Securities 0   0      
Mortgage loans held-for-sale 26,346   424,726      
Mortgage loans held-for-investment in securitization trust 0   0      
Derivative assets 0   0      
Mortgage servicing rights 498,466   514,402      
Assets, Fair Value Disclosure 524,812   939,128      
Collateralized borrowings in securitization trust 0   0      
Derivative liabilities 0   0      
Liabilities, Fair Value Disclosure 0   0      
Forward Purchase Commitments [Member]
           
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Derivative, Notional Amount 326,376 647,941 12,063 0 29,229 56,865
Derivative, Fair Value, Net $ 104