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, 2023
Dec. 31, 2022
Fair Value    
Less than Twelve Months $ 14,158 $ 72,233
Twelve Months or Longer 99,354 131,635
Total 113,512 203,868
Gross Unrealized Losses    
Less than Twelve Months (136) (1,815)
Twelve Months or Longer (4,421) (2,972)
Total (4,557) (4,787)
Mortgage-backed securities    
Fair Value    
Less than Twelve Months 1,998 23,461
Twelve Months or Longer 26,541 7,814
Total 28,539 31,275
Gross Unrealized Losses    
Less than Twelve Months (51) (1,429)
Twelve Months or Longer (2,796) (1,174)
Total (2,847) (2,603)
Agency    
Fair Value    
Less than Twelve Months 469 18,759
Twelve Months or Longer 20,002 4,437
Total 20,471 23,196
Gross Unrealized Losses    
Less than Twelve Months (17) (1,118)
Twelve Months or Longer (1,914) (649)
Total (1,931) (1,767)
Agency-collateralized mortgage obligations    
Fair Value    
Less than Twelve Months 2 1,165
Twelve Months or Longer 1,696 1,022
Total 1,698 2,187
Gross Unrealized Losses    
Less than Twelve Months 0 (96)
Twelve Months or Longer (266) (135)
Total (266) (231)
Commercial    
Fair Value    
Less than Twelve Months 1,527 3,273
Twelve Months or Longer 4,467 2,258
Total 5,994 5,531
Gross Unrealized Losses    
Less than Twelve Months (34) (150)
Twelve Months or Longer (548) (365)
Total (582) (515)
Non-agency residential    
Fair Value    
Less than Twelve Months 0 264
Twelve Months or Longer 376 97
Total 376 361
Gross Unrealized Losses    
Less than Twelve Months 0 (65)
Twelve Months or Longer (68) (25)
Total (68) (90)
U.S. Treasury and government agencies    
Fair Value    
Less than Twelve Months 151 36,730
Twelve Months or Longer 66,979 118,636
Total 67,130 155,366
Gross Unrealized Losses    
Less than Twelve Months (5) (308)
Twelve Months or Longer (1,193) (1,461)
Total (1,198) (1,769)
Non-U.S. securities    
Fair Value    
Less than Twelve Months 8,388 9,399
Twelve Months or Longer 1,878 756
Total 10,266 10,155
Gross Unrealized Losses    
Less than Twelve Months (24) (34)
Twelve Months or Longer (23) (18)
Total (47) (52)
Other taxable securities    
Fair Value    
Less than Twelve Months 1,883 2,036
Twelve Months or Longer 1,244 1,580
Total 3,127 3,616
Gross Unrealized Losses    
Less than Twelve Months (13) (16)
Twelve Months or Longer (80) (68)
Total (93) (84)
Tax-exempt securities    
Fair Value    
Less than Twelve Months 1,738 607
Twelve Months or Longer 2,712 2,849
Total 4,450 3,456
Gross Unrealized Losses    
Less than Twelve Months (43) (28)
Twelve Months or Longer (329) (251)
Total $ (372) $ (279)