Quarterly report pursuant to Section 13 or 15(d)

Securities - AFS Debt Securities in a Continuous Unrealized Loss Position (Details)

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Securities - AFS Debt Securities in a Continuous Unrealized Loss Position (Details) - USD ($)
$ in Millions
Mar. 31, 2021
Dec. 31, 2020
Fair Value    
Less than Twelve Months $ 46,000 $ 18,763
Twelve Months or Longer 2,218 2,077
Total 48,218 20,840
Gross Unrealized Losses    
Less than Twelve Months (612) (100)
Twelve Months or Longer (43) (31)
Total (655) (131)
Mortgage-backed securities    
Fair Value    
Less than Twelve Months 5,692 3,936
Twelve Months or Longer 493 431
Total 6,185 4,367
Gross Unrealized Losses    
Less than Twelve Months (121) (54)
Twelve Months or Longer (22) (19)
Total (143) (73)
Agency    
Fair Value    
Less than Twelve Months 2,111 2,841
Twelve Months or Longer 0 2
Total 2,111 2,843
Gross Unrealized Losses    
Less than Twelve Months (30) (39)
Twelve Months or Longer 0 0
Total (30) (39)
Agency-collateralized mortgage obligations    
Fair Value    
Less than Twelve Months 1,864 187
Twelve Months or Longer 316 364
Total 2,180 551
Gross Unrealized Losses    
Less than Twelve Months (10) (2)
Twelve Months or Longer (7) (11)
Total (17) (13)
Commercial    
Fair Value    
Less than Twelve Months 1,177 566
Twelve Months or Longer 2 9
Total 1,179 575
Gross Unrealized Losses    
Less than Twelve Months (53) (4)
Twelve Months or Longer 0 0
Total (53) (4)
Non-agency residential    
Fair Value    
Less than Twelve Months 540 342
Twelve Months or Longer 175 56
Total 715 398
Gross Unrealized Losses    
Less than Twelve Months (28) (9)
Twelve Months or Longer (15) (8)
Total (43) (17)
U.S. Treasury and agency securities    
Fair Value    
Less than Twelve Months 39,989 8,282
Twelve Months or Longer 689 498
Total 40,678 8,780
Gross Unrealized Losses    
Less than Twelve Months (488) (9)
Twelve Months or Longer (4) (4)
Total (492) (13)
Non-U.S. securities    
Fair Value    
Less than Twelve Months 66 1,861
Twelve Months or Longer 625 135
Total 691 1,996
Gross Unrealized Losses    
Less than Twelve Months (1) (6)
Twelve Months or Longer (5) (1)
Total (6) (7)
Other taxable securities, substantially all asset-backed securities    
Fair Value    
Less than Twelve Months 253 576
Twelve Months or Longer 203 396
Total 456 972
Gross Unrealized Losses    
Less than Twelve Months (2) (2)
Twelve Months or Longer (2) (4)
Total (4) (6)
Total taxable securities    
Fair Value    
Less than Twelve Months 46,000 14,655
Twelve Months or Longer 2,010 1,460
Total 48,010 16,115
Gross Unrealized Losses    
Less than Twelve Months (612) (71)
Twelve Months or Longer (33) (28)
Total (645) (99)
Tax-exempt securities    
Fair Value    
Less than Twelve Months 0 4,108
Twelve Months or Longer 208 617
Total 208 4,725
Gross Unrealized Losses    
Less than Twelve Months 0 (29)
Twelve Months or Longer (10) (3)
Total $ (10) $ (32)