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
Mar. 31, 2014
Dec. 31, 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%      
Avaialble-for-sale Securities Categorized as Level 2 Assets 100.00%      
Assets Reported at Fair Value, Available-for-sale Securities 81.60%      
Assets Reported at Fair Value, Trading Securities 6.50%      
Mortgage Loans Held-for-sale Categorized as Level 2 Assets 87.50%      
Mortgage Loans Held-for-sale Categorized as Level 3 Assets 12.50%      
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 Categoized as Level 1 Assets (Liabilities) 100.00%      
Collateralized Borrowings in Securitization Trust Categorized as Level 2 Liabilities 100.00%      
Available-for-Sale Securities $ 12,634,056 $ 12,256,727    
Trading Securities 1,000,312 1,000,180    
Mortgage servicing rights 476,663 514,402 0 0
Fair Value, Measurements, Recurring [Member]
       
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Available-for-Sale Securities 12,634,056 12,256,727    
Trading Securities 1,000,312 1,000,180    
Mortgage loans held-for-sale 161,021 544,581    
Mortgage loans held-for-investment in securitization trust 781,085 792,390    
Derivative assets 429,419 549,859    
Mortgage servicing rights 476,663 514,402    
Assets, Fair Value Disclosure 15,482,556 15,658,139    
Collateralized borrowings in securitization trust 658,953 639,731    
Derivative liabilities 8,395 22,081    
Liabilities, Fair Value Disclosure 667,348 661,812    
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 1,000,312 1,000,180    
Mortgage loans held-for-sale 0 0    
Mortgage loans held-for-investment in securitization trust 0 0    
Derivative assets 4,331 33,425    
Mortgage servicing rights 0 0    
Assets, Fair Value Disclosure 1,004,643 1,033,605    
Collateralized borrowings in securitization trust 0 0    
Derivative liabilities 5,487 125    
Liabilities, Fair Value Disclosure 5,487 125    
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 12,634,056 12,256,727    
Trading Securities 0 0    
Mortgage loans held-for-sale 140,924 119,855    
Mortgage loans held-for-investment in securitization trust 781,085 792,390    
Derivative assets 425,088 516,434    
Mortgage servicing rights 0 0    
Assets, Fair Value Disclosure 13,981,153 13,685,406    
Collateralized borrowings in securitization trust 658,953 639,731    
Derivative liabilities 2,908 21,956    
Liabilities, Fair Value Disclosure 661,861 661,687    
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 20,097 424,726    
Mortgage loans held-for-investment in securitization trust 0 0    
Derivative assets 0 0    
Mortgage servicing rights 476,663 514,402    
Assets, Fair Value Disclosure 496,760 939,128    
Collateralized borrowings in securitization trust 0 0    
Derivative liabilities 0 0    
Liabilities, Fair Value Disclosure 0 0    
Derivative Financial Instruments, Liabilities [Member]
       
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative, Notional Amount 2,894,624 10,876,702    
Derivative, Fair Value, Net (8,395) (22,081)    
Derivative Financial Instruments, Liabilities [Member] | Forward Purchase Commitment [Member]
       
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative, Notional Amount 153,637 0    
Derivative, Fair Value, Net $ (387) $ 0