Quarterly report pursuant to Section 13 or 15(d)

Fair Value by Balance Sheet Grouping (Details)

v3.2.0.727
Fair Value by Balance Sheet Grouping (Details) - USD ($)
$ in Thousands
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2013
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Available-for-sale Securities $ 12,807,658   $ 14,341,102      
Trading Securities 0   1,997,656      
Residential mortgage loans held-for-sale, at fair value 695,078   535,712 $ 399,841   $ 544,581
Residential mortgage loans held-for-investment in securitization trusts 2,449,199   1,744,746      
Commercial real estate loans held-for-investment 45,605   0      
Mortgage servicing rights 437,576 $ 410,229 452,006 500,490 $ 476,663 514,402
Cash and Cash Equivalents, at Carrying Value 933,579   1,005,792 $ 1,182,696   $ 1,025,487
Restricted Cash and Cash Equivalents 410,903   336,771      
Derivative Asset, Fair Value, Gross Asset 347,322   380,791      
Federal Home Loan Bank stock 125,250   100,010      
Cost Method Investments 3,000   3,000      
Securities Sold under Agreements to Repurchase 9,422,803   12,932,463      
Collateralized borrowings in securitization trust, at fair value 1,714,735   1,209,663      
Federal Home Loan Bank advances 3,000,000   2,500,000      
Derivative Liability, Fair Value, Gross Liability 22,475   90,233      
Federal Home Loan Bank of Des Moines [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Federal Home Loan Bank stock 125,250   103,010      
Federal Home Loan Bank advances $ 3,000,000   $ 2,500,000