Quarterly report pursuant to Section 13 or 15(d)

Securities - Gross Unrealized Losses (Details)

v2.4.0.6
Securities - Gross Unrealized Losses (Details) (USD $)
Jun. 30, 2012
Securities
Dec. 31, 2011
Securities
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]    
Less than Twelve Months, Fair Value $ 26,662,000,000 [1] $ 25,233,000,000 [1]
Less than Twelve Months, Gross Unrealized Losses (247,000,000) [1] (344,000,000) [1]
Twelve Months or Longer, Fair Value 34,555,000,000 [1] 48,555,000,000 [1]
Twelve Months or Longer, Gross Unrealized Losses (787,000,000) [1] (1,346,000,000) [1]
Total, Fair Value 61,217,000,000 [1] 73,788,000,000 [1]
Total, Gross Unrealized Losses (1,034,000,000) [1] (1,690,000,000) [1]
Table Details [Abstract]    
Number of Available for Sale Securities Amortized Cost Exceeds Fair Value 3,600 3,800
Available for Sale Securities Amortized Cost Exceeding Fair Value 1,000,000,000 1,700,000,000
Temporarily Impaired [Member]
   
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]    
Less than Twelve Months, Fair Value 26,619,000,000 25,075,000,000
Less than Twelve Months, Gross Unrealized Losses (240,000,000) (316,000,000)
Twelve Months or Longer, Fair Value 34,354,000,000 48,066,000,000
Twelve Months or Longer, Gross Unrealized Losses (764,000,000) (1,301,000,000)
Total, Fair Value 60,973,000,000 73,141,000,000
Total, Gross Unrealized Losses (1,004,000,000) (1,617,000,000)
Temporarily Impaired [Member] | Debt Securities [Member]
   
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]    
Less than Twelve Months, Fair Value 26,616,000,000 25,044,000,000
Less than Twelve Months, Gross Unrealized Losses (239,000,000) (315,000,000)
Twelve Months or Longer, Fair Value 34,347,000,000 48,060,000,000
Twelve Months or Longer, Gross Unrealized Losses (759,000,000) (1,295,000,000)
Total, Fair Value 60,963,000,000 73,104,000,000
Total, Gross Unrealized Losses (998,000,000) (1,610,000,000)
Temporarily Impaired [Member] | Taxable Securities [Member]
   
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]    
Less than Twelve Months, Fair Value 25,783,000,000 23,927,000,000
Less than Twelve Months, Gross Unrealized Losses (231,000,000) (290,000,000)
Twelve Months or Longer, Fair Value 33,187,000,000 45,306,000,000
Twelve Months or Longer, Gross Unrealized Losses (715,000,000) (1,230,000,000)
Total, Fair Value 58,970,000,000 69,233,000,000
Total, Gross Unrealized Losses (946,000,000) (1,520,000,000)
Temporarily Impaired [Member] | United States Treasury And Agency Securities [Member]
   
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]    
Less than Twelve Months, Fair Value 254,000,000  
Less than Twelve Months, Gross Unrealized Losses (1,000,000)  
Twelve Months or Longer, Fair Value 26,163,000,000 38,269,000,000
Twelve Months or Longer, Gross Unrealized Losses (439,000,000) (811,000,000)
Total, Fair Value 26,417,000,000 38,269,000,000
Total, Gross Unrealized Losses (440,000,000) (811,000,000)
Temporarily Impaired [Member] | Agency Securities [Member]
   
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]    
Less than Twelve Months, Fair Value 11,060,000,000 4,679,000,000
Less than Twelve Months, Gross Unrealized Losses (45,000,000) (13,000,000)
Twelve Months or Longer, Fair Value 442,000,000 474,000,000
Twelve Months or Longer, Gross Unrealized Losses (6,000,000) (8,000,000)
Total, Fair Value 11,502,000,000 5,153,000,000
Total, Gross Unrealized Losses (51,000,000) (21,000,000)
Temporarily Impaired [Member] | Collateralized Mortgage Obligations [Member]
   
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]    
Less than Twelve Months, Fair Value 7,748,000,000 11,448,000,000
Less than Twelve Months, Gross Unrealized Losses (112,000,000) (134,000,000)
Twelve Months or Longer, Fair Value 1,861,000,000 976,000,000
Twelve Months or Longer, Gross Unrealized Losses (44,000,000) (33,000,000)
Total, Fair Value 9,609,000,000 12,424,000,000
Total, Gross Unrealized Losses (156,000,000) (167,000,000)
Temporarily Impaired [Member] | Residential Mortgage Backed Securities [Member]
   
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]    
Less than Twelve Months, Fair Value 1,581,000,000 2,112,000,000
Less than Twelve Months, Gross Unrealized Losses (39,000,000) (59,000,000)
Twelve Months or Longer, Fair Value 2,148,000,000 3,950,000,000
Twelve Months or Longer, Gross Unrealized Losses (186,000,000) (350,000,000)
Total, Fair Value 3,729,000,000 6,062,000,000
Total, Gross Unrealized Losses (225,000,000) (409,000,000)
Temporarily Impaired [Member] | Commercial Mortgage Backed Securities [Member]
   
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]    
Less than Twelve Months, Fair Value   55,000,000
Less than Twelve Months, Gross Unrealized Losses   (1,000,000)
Total, Fair Value   55,000,000
Total, Gross Unrealized Losses   (1,000,000)
Temporarily Impaired [Member] | Foreign Securities [Member]
   
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]    
Less than Twelve Months, Fair Value 469,000,000 1,008,000,000
Less than Twelve Months, Gross Unrealized Losses (3,000,000) (13,000,000)
Twelve Months or Longer, Fair Value 657,000,000 165,000,000
Twelve Months or Longer, Gross Unrealized Losses (5,000,000) (1,000,000)
Total, Fair Value 1,126,000,000 1,173,000,000
Total, Gross Unrealized Losses (8,000,000) (14,000,000)
Temporarily Impaired [Member] | Corporate Bond Securities [Member]
   
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]    
Less than Twelve Months, Fair Value 222,000,000 415,000,000
Less than Twelve Months, Gross Unrealized Losses (17,000,000) (29,000,000)
Twelve Months or Longer, Fair Value 103,000,000 111,000,000
Twelve Months or Longer, Gross Unrealized Losses (9,000,000) (8,000,000)
Total, Fair Value 325,000,000 526,000,000
Total, Gross Unrealized Losses (26,000,000) (37,000,000)
Temporarily Impaired [Member] | Other Debt Obligations [Member]
   
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]    
Less than Twelve Months, Fair Value 4,449,000,000 4,210,000,000
Less than Twelve Months, Gross Unrealized Losses (14,000,000) (41,000,000)
Twelve Months or Longer, Fair Value 1,813,000,000 1,361,000,000
Twelve Months or Longer, Gross Unrealized Losses (26,000,000) (19,000,000)
Total, Fair Value 6,262,000,000 5,571,000,000
Total, Gross Unrealized Losses (40,000,000) (60,000,000)
Temporarily Impaired [Member] | Tax-exempt securities [Member]
   
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]    
Less than Twelve Months, Fair Value 833,000,000 1,117,000,000
Less than Twelve Months, Gross Unrealized Losses (8,000,000) (25,000,000)
Twelve Months or Longer, Fair Value 1,160,000,000 2,754,000,000
Twelve Months or Longer, Gross Unrealized Losses (44,000,000) (65,000,000)
Total, Fair Value 1,993,000,000 3,871,000,000
Total, Gross Unrealized Losses (52,000,000) (90,000,000)
Temporarily Impaired [Member] | Equity Securities
   
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]    
Less than Twelve Months, Fair Value 3,000,000 31,000,000
Less than Twelve Months, Gross Unrealized Losses (1,000,000) (1,000,000)
Twelve Months or Longer, Fair Value 7,000,000 6,000,000
Twelve Months or Longer, Gross Unrealized Losses (5,000,000) (6,000,000)
Total, Fair Value 10,000,000 37,000,000
Total, Gross Unrealized Losses (6,000,000) (7,000,000)
Other Than Temporarily Impaired [Member] | Residential Mortgage Backed Securities [Member]
   
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]    
Less than Twelve Months, Fair Value 43,000,000 [2] 158,000,000 [2]
Less than Twelve Months, Gross Unrealized Losses (7,000,000) [2] (28,000,000) [2]
Twelve Months or Longer, Fair Value 201,000,000 [2] 489,000,000 [2]
Twelve Months or Longer, Gross Unrealized Losses (23,000,000) [2] (45,000,000) [2]
Total, Fair Value 244,000,000 [2] 647,000,000 [2]
Total, Gross Unrealized Losses $ (30,000,000) [2] $ (73,000,000) [2]
[1] At June 30, 2012, the amortized cost of approximately 3,600 AFS securities exceeded their fair value by $1.0 billion. At December 31, 2011, the amortized cost of approximately 3,800 AFS securities exceeded their fair value by $1.7 billion.
[2] Includes other-than-temporarily impaired AFS debt securities on which OTTI loss remains in OCI.