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
Sep. 30, 2024
Dec. 31, 2023
Fair Value    
Less than Twelve Months $ 136,419 $ 37,331
Twelve Months or Longer 103,293 102,171
Total 239,712 139,502
Gross Unrealized Losses    
Less than Twelve Months (308) (92)
Twelve Months or Longer (3,354) (3,891)
Total (3,662) (3,983)
Mortgage-backed securities    
Fair Value    
Less than Twelve Months 20,033 10,987
Twelve Months or Longer 26,292 27,435
Total 46,325 38,422
Gross Unrealized Losses    
Less than Twelve Months (92) (48)
Twelve Months or Longer (1,967) (2,157)
Total (2,059) (2,205)
Agency    
Fair Value    
Less than Twelve Months 11,822 8,624
Twelve Months or Longer 19,671 20,776
Total 31,493 29,400
Gross Unrealized Losses    
Less than Twelve Months (61) (21)
Twelve Months or Longer (1,338) (1,399)
Total (1,399) (1,420)
Agency-collateralized mortgage obligations    
Fair Value    
Less than Twelve Months 1,979 0
Twelve Months or Longer 1,583 1,701
Total 3,562 1,701
Gross Unrealized Losses    
Less than Twelve Months (2) 0
Twelve Months or Longer (155) (201)
Total (157) (201)
Commercial    
Fair Value    
Less than Twelve Months 6,232 2,363
Twelve Months or Longer 4,876 4,588
Total 11,108 6,951
Gross Unrealized Losses    
Less than Twelve Months (29) (27)
Twelve Months or Longer (421) (487)
Total (450) (514)
Non-agency residential    
Fair Value    
Less than Twelve Months 0 0
Twelve Months or Longer 162 370
Total 162 370
Gross Unrealized Losses    
Less than Twelve Months 0 0
Twelve Months or Longer (53) (70)
Total (53) (70)
U.S. Treasury and government agencies    
Fair Value    
Less than Twelve Months 110,927 14,907
Twelve Months or Longer 70,551 69,669
Total 181,478 84,576
Gross Unrealized Losses    
Less than Twelve Months (191) (12)
Twelve Months or Longer (1,183) (1,449)
Total (1,374) (1,461)
Non-U.S. securities    
Fair Value    
Less than Twelve Months 3,982 7,702
Twelve Months or Longer 3,000 1,524
Total 6,982 9,226
Gross Unrealized Losses    
Less than Twelve Months (12) (8)
Twelve Months or Longer (10) (12)
Total (22) (20)
Other taxable securities    
Fair Value    
Less than Twelve Months 1,360 3,269
Twelve Months or Longer 1,022 1,437
Total 2,382 4,706
Gross Unrealized Losses    
Less than Twelve Months (2) (19)
Twelve Months or Longer (28) (57)
Total (30) (76)
Tax-exempt securities    
Fair Value    
Less than Twelve Months 117 466
Twelve Months or Longer 2,428 2,106
Total 2,545 2,572
Gross Unrealized Losses    
Less than Twelve Months (11) (5)
Twelve Months or Longer (166) (216)
Total $ (177) $ (221)