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
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2013
Jun. 30, 2013
Mar. 31, 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 81.20%          
Assets Reported at Fair Value, Trading Securities 6.20%          
Mortgage Loans Held-for-sale Categorized as Level 2 Assets 94.30%          
Mortgage Loans Held-for-sale Categorized as Level 3 Assets 5.70%          
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 $ 43,379,217 $ 43,576,146 $ 37,366,610 $ 44,262,605 $ 27,041,328 $ 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 13,108,251   12,256,727      
Trading Securities 1,002,422   1,000,180      
Mortgage servicing rights 500,490 476,663 514,402 1,452 0 0
Fair Value, Measurements, Recurring [Member]
           
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Available-for-sale Securities 13,108,251   12,256,727      
Trading Securities 1,002,422   1,000,180      
Mortgage loans held-for-sale 399,841   544,581      
Mortgage loans held-for-investment in securitization trust 804,666   792,390      
Derivative assets 331,601   549,859      
Mortgage servicing rights 500,490   514,402      
Assets, Fair Value Disclosure 16,147,271   15,658,139      
Collateralized borrowings in securitization trust 561,921   639,731      
Derivative liabilities 17,097   22,081      
Liabilities, Fair Value Disclosure 579,018   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 1,002,422   1,000,180      
Mortgage loans held-for-sale 0   0      
Mortgage loans held-for-investment in securitization trust 0   0      
Derivative assets 9,063   33,425      
Mortgage servicing rights 0   0      
Assets, Fair Value Disclosure 1,011,485   1,033,605      
Collateralized borrowings in securitization trust 0   0      
Derivative liabilities 13,566   125      
Liabilities, Fair Value Disclosure 13,566   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 13,108,251   12,256,727      
Trading Securities 0   0      
Mortgage loans held-for-sale 377,044   119,855      
Mortgage loans held-for-investment in securitization trust 804,666   792,390      
Derivative assets 322,538   516,434      
Mortgage servicing rights 0   0      
Assets, Fair Value Disclosure 14,612,499   13,685,406      
Collateralized borrowings in securitization trust 561,921   639,731      
Derivative liabilities 3,531   21,956      
Liabilities, Fair Value Disclosure 565,452   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 22,797   424,726      
Mortgage loans held-for-investment in securitization trust 0   0      
Derivative assets 0   0      
Mortgage servicing rights 500,490   514,402      
Assets, Fair Value Disclosure 523,287   939,128      
Collateralized borrowings in securitization trust 0   0      
Derivative liabilities 0   0      
Liabilities, Fair Value Disclosure 0   0      
Forward Purchase Commitment [Member]
           
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Derivative, Notional Amount 647,941 153,637 12,063 29,229 8,745 56,865
Derivative, Fair Value, Net $ 3,444