v2.4.0.6
Securities Available for Sale (Schedule of Available for Sale Securities) (Details) (USD $)
In Millions, unless otherwise specified
6 Months Ended 12 Months Ended
Jun. 30, 2012
Dec. 31, 2011
Amortized Cost $ 31,189 $ 30,282
Gross Unrealized Gains 270 236
Gross Unrealized Losses 17 23
Other-than-Temporary Impairment 0 0
Securities available for sale, at fair value 31,442 30,495
Debt Securities
   
Amortized Cost 31,174 30,267
Gross Unrealized Gains 270 236
Gross Unrealized Losses 7 23
Other-than-Temporary Impairment 0 0
Securities available for sale, at fair value 31,437 30,480
U.S. Government and Agency Securities
   
Amortized Cost 26,865  
Gross Unrealized Gains 254  
Gross Unrealized Losses 6  
Other-than-Temporary Impairment 0  
Securities available for sale, at fair value 27,113  
U.S. Treasury Securities
   
Amortized Cost 11,415 13,240
Gross Unrealized Gains 142 182
Gross Unrealized Losses 0 0
Other-than-Temporary Impairment 0 0
Securities available for sale, at fair value 11,557 13,422
U.S. Agency Securities
   
Amortized Cost 15,450 16,083
Gross Unrealized Gains 112 54
Gross Unrealized Losses 6 20
Other-than-Temporary Impairment 0 0
Securities available for sale, at fair value 15,556 16,117
Corporate and Other Debt
   
Amortized Cost 4,309 944 [1]
Gross Unrealized Gains 16 0 [1]
Gross Unrealized Losses 1 3 [1]
Other-than-Temporary Impairment 0 0 [1]
Securities available for sale, at fair value 4,324 941 [1]
Auto Loan Asset-backed Securities
   
Amortized Cost 914  
Gross Unrealized Gains 2  
Gross Unrealized Losses 0  
Other-than-Temporary Impairment 0  
Securities available for sale, at fair value 916  
Corporate Bonds
   
Amortized Cost 1,467  
Gross Unrealized Gains 5  
Gross Unrealized Losses 1  
Other-than-Temporary Impairment 0  
Securities available for sale, at fair value 1,471  
FFELP Student Loan Asset-backed Securities
   
Amortized Cost 1,928 [2]  
Gross Unrealized Gains 9 [2]  
Gross Unrealized Losses 0 [2]  
Other-than-Temporary Impairment 0 [2]  
Securities available for sale, at fair value 1,937 [2]  
Equity Securities
   
Amortized Cost 15 15
Gross Unrealized Gains 0 0
Gross Unrealized Losses 10 0
Other-than-Temporary Impairment 0 0
Securities available for sale, at fair value $ 5 $ 15
[1] Amounts represent FFELP student loan asset-backed securities, in which the loans are backed by a guarantee from the U.S. Department of Education ofat least 95% of the principal balance and interest on such loans.
[2] Amounts are backed by a guarantee from the U.S. Department of Education of at least 95% of the principal balance and interest on such loans.