Quarterly report [Sections 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
Jun. 30, 2026
Dec. 31, 2025
Fair Value    
Less than Twelve Months $ 106,569 $ 30,626
Twelve Months or Longer 71,340 101,201
Total 177,909 131,827
Gross Unrealized Losses    
Less than Twelve Months (690) (55)
Twelve Months or Longer (2,305) (2,548)
Total (2,995) (2,603)
Mortgage-backed securities    
Fair Value    
Less than Twelve Months 24,649 12,943
Twelve Months or Longer 21,481 26,544
Total 46,130 39,487
Gross Unrealized Losses    
Less than Twelve Months (222) (32)
Twelve Months or Longer (1,581) (1,720)
Total (1,803) (1,752)
Agency    
Fair Value    
Less than Twelve Months 11,723 1,645
Twelve Months or Longer 15,861 18,512
Total 27,584 20,157
Gross Unrealized Losses    
Less than Twelve Months (68) 0
Twelve Months or Longer (1,086) (1,179)
Total (1,154) (1,179)
Agency-collateralized mortgage obligations    
Fair Value    
Less than Twelve Months 138 2,503
Twelve Months or Longer 1,324 2,351
Total 1,462 4,854
Gross Unrealized Losses    
Less than Twelve Months (1) (5)
Twelve Months or Longer (140) (127)
Total (141) (132)
Commercial    
Fair Value    
Less than Twelve Months 12,780 8,795
Twelve Months or Longer 4,256 5,527
Total 17,036 14,322
Gross Unrealized Losses    
Less than Twelve Months (152) (27)
Twelve Months or Longer (332) (358)
Total (484) (385)
Non-agency residential    
Fair Value    
Less than Twelve Months 8 0
Twelve Months or Longer 40 154
Total 48 154
Gross Unrealized Losses    
Less than Twelve Months (1) 0
Twelve Months or Longer (23) (56)
Total (24) (56)
U.S. Treasury and government agencies    
Fair Value    
Less than Twelve Months 65,561 5,398
Twelve Months or Longer 44,321 68,763
Total 109,882 74,161
Gross Unrealized Losses    
Less than Twelve Months (385) (7)
Twelve Months or Longer (531) (614)
Total (916) (621)
Non-U.S. securities    
Fair Value    
Less than Twelve Months 12,362 10,891
Twelve Months or Longer 2,651 2,808
Total 15,013 13,699
Gross Unrealized Losses    
Less than Twelve Months (58) (10)
Twelve Months or Longer (5) (8)
Total (63) (18)
Other taxable securities    
Fair Value    
Less than Twelve Months 3,713 979
Twelve Months or Longer 1,302 1,356
Total 5,015 2,335
Gross Unrealized Losses    
Less than Twelve Months (24) (5)
Twelve Months or Longer (30) (31)
Total (54) (36)
Tax-exempt securities    
Fair Value    
Less than Twelve Months 284 415
Twelve Months or Longer 1,585 1,730
Total 1,869 2,145
Gross Unrealized Losses    
Less than Twelve Months (1) (1)
Twelve Months or Longer (158) (175)
Total $ (159) $ (176)