Quarterly report pursuant to Section 13 or 15(d)

Schedule of Available-for-sale Securities Reconciliation (Details)

v2.4.0.8
Schedule of Available-for-sale Securities Reconciliation (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items]    
Available-for-sale Securities, Face Value $ 16,860,718 $ 16,393,943
Available-for-sale Securities, Unamortized Premium 656,843 621,279
Available-for-sale Securities, Designated Credit Reserve (1,162,457) (1,234,449)
Available-for-sale Securities, Net, Unamortized (4,064,483) (3,968,781)
Available-for-sale Securities, Amortized Cost Basis 12,290,621 11,811,992
Available-for-sale Securities, Gross Unrealized Gains 897,043 697,779
Available-for-sale Securities, Gross Unrealized Losses (79,413) (253,044)
Available-for-sale securities, at fair value 13,108,251 12,256,727
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
   
Schedule of Available-for-sale Securities [Line Items]    
Available-for-sale Securities, Face Value 12,285,416 11,919,590
Available-for-sale Securities, Unamortized Premium 656,843 621,279
Available-for-sale Securities, Designated Credit Reserve 0 0
Available-for-sale Securities, Net, Unamortized (3,008,183) (2,897,222)
Available-for-sale Securities, Amortized Cost Basis 9,934,076 9,643,647
Available-for-sale Securities, Gross Unrealized Gains 194,613 102,600
Available-for-sale Securities, Gross Unrealized Losses (77,161) (248,838)
Available-for-sale securities, at fair value 10,051,528 9,497,409
Mortgage-backed Securities, Issued by Private Enterprises [Member]
   
Schedule of Available-for-sale Securities [Line Items]    
Available-for-sale Securities, Face Value 4,575,302 4,474,353
Available-for-sale Securities, Unamortized Premium 0 0
Available-for-sale Securities, Designated Credit Reserve (1,162,457) (1,234,449)
Available-for-sale Securities, Net, Unamortized (1,056,300) (1,071,559)
Available-for-sale Securities, Amortized Cost Basis 2,356,545 2,168,345
Available-for-sale Securities, Gross Unrealized Gains 702,430 595,179
Available-for-sale Securities, Gross Unrealized Losses (2,252) (4,206)
Available-for-sale securities, at fair value $ 3,056,723 $ 2,759,318