Quarterly report pursuant to Section 13 or 15(d)

Fair Value, Measurement Inputs, Disclosure (Details)

v3.2.0.727
Fair Value, Measurement Inputs, Disclosure (Details) - USD ($)
$ in Thousands
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Available-for-sale Securities Categorized as Level 2 Assets 100.00%          
Assets Reported at Fair Value, Available-for-sale Securities 76.50%          
Mortgage Loans Held-for-sale Categorized as Level 2 Assets 91.20%          
Mortgage Loans Held-for-sale Categorized as Level 3 Assets 8.80%          
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 $ 27,401,335 $ 33,709,043 $ 48,115,523 $ 43,379,217 $ 43,576,146 $ 37,366,610
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 $ 12,807,658   14,341,102      
Trading Securities 0   1,997,656      
Mortgage servicing rights 437,576 410,229 452,006 500,490 476,663 514,402
Fair Value, Measurements, Recurring [Member]            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Available-for-sale Securities 12,807,658   14,341,102      
Trading Securities     1,997,656      
Mortgage loans held-for-sale 695,078   535,712      
Mortgage loans held-for-investment in securitization trust 2,449,199   1,744,746      
Derivative assets 347,322   380,791      
Mortgage servicing rights 437,576   452,006      
Assets, Fair Value Disclosure 16,736,833   19,452,013      
Collateralized borrowings in securitization trust 1,714,735   1,209,663      
Derivative liabilities 22,475   90,233      
Liabilities, Fair Value Disclosure 1,737,210   1,299,896      
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     1,997,656      
Mortgage loans held-for-sale 0   0      
Mortgage loans held-for-investment in securitization trust 0   0      
Derivative assets 0   10,350      
Mortgage servicing rights 0   0      
Assets, Fair Value Disclosure 0   2,008,006      
Collateralized borrowings in securitization trust 0   0      
Derivative liabilities 5,187   17,687      
Liabilities, Fair Value Disclosure 5,187   17,687      
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 12,807,658   14,341,102      
Trading Securities     0      
Mortgage loans held-for-sale 633,578   500,159      
Mortgage loans held-for-investment in securitization trust 2,449,199   1,744,746      
Derivative assets 347,322   370,441      
Mortgage servicing rights 0   0      
Assets, Fair Value Disclosure 16,237,757   16,956,448      
Collateralized borrowings in securitization trust 1,714,735   1,209,663      
Derivative liabilities 17,288   72,546      
Liabilities, Fair Value Disclosure 1,732,023   1,282,209      
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      
Mortgage loans held-for-sale 61,500   35,553      
Mortgage loans held-for-investment in securitization trust 0   0      
Derivative assets 0   0      
Mortgage servicing rights 437,576   452,006      
Assets, Fair Value Disclosure 499,076   487,559      
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 626,660 $ 707,304 554,838 $ 647,941 $ 153,637 $ 12,063
Derivative Financial Instruments, Liabilities [Member]            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Derivative, Notional Amount 4,723,016   16,200,000      
Derivative, Fair Value, Net (22,475)   (90,233)      
Derivative Financial Instruments, Liabilities [Member] | Forward Purchase Commitments [Member]            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Derivative, Notional Amount 491,479   0      
Derivative, Fair Value, Net $ (2,596)   $ 0