Quarterly report pursuant to Section 13 or 15(d)

Securities - Gross Unrealized Losses (Details)

v2.4.0.8
Securities - Gross Unrealized Losses (Details) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]    
Less than Twelve Months, Fair Value $ 163,636 [1] $ 154,358 [1]
Less than Twelve Months, Gross Unrealized Losses (4,118) [1] (5,791) [1]
Twelve Months or Longer, Fair Value 15,301 [1] 14,839 [1]
Twelve Months or Longer, Gross Unrealized Losses (583) [1] (760) [1]
Total, Fair Value 178,937 [1] 169,197 [1]
Total, Gross Unrealized Losses (4,701) [1] (6,551) [1]
Temporarily Impaired [Member] | US Government Corporations and Agencies Securities [Member]
   
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]    
Less than Twelve Months, Fair Value 23,797 5,770
Less than Twelve Months, Gross Unrealized Losses (119) (61)
Twelve Months or Longer, Fair Value 93 19
Twelve Months or Longer, Gross Unrealized Losses (2) (1)
Total, Fair Value 23,890 5,789
Total, Gross Unrealized Losses (121) (62)
Temporarily Impaired [Member] | Debt Securities [Member]
   
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]    
Less than Twelve Months, Fair Value 163,636 154,356
Less than Twelve Months, Gross Unrealized Losses (4,118) (5,790)
Twelve Months or Longer, Fair Value 15,300 14,838
Twelve Months or Longer, Gross Unrealized Losses (582) (759)
Total, Fair Value 178,936 169,194
Total, Gross Unrealized Losses (4,700) (6,549)
Temporarily Impaired [Member] | Agency MBS [Member]
   
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]    
Less than Twelve Months, Fair Value 131,550 132,032
Less than Twelve Months, Gross Unrealized Losses (3,910) (5,457)
Twelve Months or Longer, Fair Value 9,518 9,324
Twelve Months or Longer, Gross Unrealized Losses (389) (497)
Total, Fair Value 141,068 141,356
Total, Gross Unrealized Losses (4,299) (5,954)
Temporarily Impaired [Member] | Collateralized Mortgage Obligations [Member]
   
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]    
Less than Twelve Months, Fair Value 3,340 13,438
Less than Twelve Months, Gross Unrealized Losses (49) (210)
Twelve Months or Longer, Fair Value 2,900 2,661
Twelve Months or Longer, Gross Unrealized Losses (60) (105)
Total, Fair Value 6,240 16,099
Total, Gross Unrealized Losses (109) (315)
Temporarily Impaired [Member] | Residential Mortgage Backed Securities [Member]
   
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]    
Less than Twelve Months, Fair Value 531 819
Less than Twelve Months, Gross Unrealized Losses (8) (15)
Twelve Months or Longer, Fair Value 959 1,237
Twelve Months or Longer, Gross Unrealized Losses (88) (106)
Total, Fair Value 1,490 2,056
Total, Gross Unrealized Losses (96) (121)
Temporarily Impaired [Member] | Commercial Mortgage Backed Securities [Member]
   
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]    
Less than Twelve Months, Fair Value 530 286
Less than Twelve Months, Gross Unrealized Losses (5) (12)
Twelve Months or Longer, Fair Value 0 0
Twelve Months or Longer, Gross Unrealized Losses 0 0
Total, Fair Value 530 286
Total, Gross Unrealized Losses (5) (12)
Temporarily Impaired [Member] | Foreign Securities [Member]
   
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]    
Less than Twelve Months, Fair Value 0 0
Less than Twelve Months, Gross Unrealized Losses 0 0
Twelve Months or Longer, Fair Value 42 45
Twelve Months or Longer, Gross Unrealized Losses (18) (24)
Total, Fair Value 42 45
Total, Gross Unrealized Losses (18) (24)
Temporarily Impaired [Member] | Corporate Bond Securities [Member]
   
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]    
Less than Twelve Months, Fair Value 0 106
Less than Twelve Months, Gross Unrealized Losses 0 (3)
Twelve Months or Longer, Fair Value 313 282
Twelve Months or Longer, Gross Unrealized Losses (4) (4)
Total, Fair Value 313 388
Total, Gross Unrealized Losses (4) (7)
Temporarily Impaired [Member] | Other Debt Obligations [Member]
   
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]    
Less than Twelve Months, Fair Value 2,300 116
Less than Twelve Months, Gross Unrealized Losses (10) (2)
Twelve Months or Longer, Fair Value 457 280
Twelve Months or Longer, Gross Unrealized Losses (5) (3)
Total, Fair Value 2,757 396
Total, Gross Unrealized Losses (15) (5)
Temporarily Impaired [Member] | Taxable Securities [Member]
   
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]    
Less than Twelve Months, Fair Value 162,048 152,567
Less than Twelve Months, Gross Unrealized Losses (4,101) (5,760)
Twelve Months or Longer, Fair Value 14,282 13,848
Twelve Months or Longer, Gross Unrealized Losses (566) (740)
Total, Fair Value 176,330 166,415
Total, Gross Unrealized Losses (4,667) (6,500)
Temporarily Impaired [Member] | Tax-exempt securities [Member]
   
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]    
Less than Twelve Months, Fair Value 1,588 1,789
Less than Twelve Months, Gross Unrealized Losses (17) (30)
Twelve Months or Longer, Fair Value 1,018 990
Twelve Months or Longer, Gross Unrealized Losses (16) (19)
Total, Fair Value 2,606 2,779
Total, Gross Unrealized Losses (33) (49)
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 0 [1] 2 [1]
Less than Twelve Months, Gross Unrealized Losses 0 [1] (1) [1]
Twelve Months or Longer, Fair Value 1 [1] 1 [1]
Twelve Months or Longer, Gross Unrealized Losses (1) [1] (1) [1]
Total, Fair Value 1 [1] 3 [1]
Total, Gross Unrealized Losses $ (1) [1] $ (2) [1]
[1] (1)Includes other-than-temporarily impaired AFS debt securities on which an OTTI loss remains in accumulated OCI.