v3.24.2
Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Accumulated other comprehensive income (loss) [Roll Forward]        
Balance, beginning of period     $ 24,921  
Other comprehensive income (loss), net of taxes $ (279) $ (623) (939) $ 436
Balance, end of period 24,862 21,855 24,862 21,855
Pre-tax components of other comprehensive income (loss) and the related income tax expense (benefit)        
Other comprehensive income (loss), before income taxes (350) (813) (1,172) 529
Income tax expense (benefit) (71) (190) (233) 93
Other comprehensive income (loss), net of taxes (279) (623) (939) 436
Accumulated Other Comprehensive Income (Loss) [Member]        
Accumulated other comprehensive income (loss) [Roll Forward]        
Balance, beginning of period (5,131) (5,386) (4,471) (6,445)
Other comprehensive income (loss) before reclassifications (304)   (995)  
Amounts reclassified from accumulated other comprehensive income (loss), net of tax 25   56  
Other comprehensive income (loss), net of taxes (279) (623) (939) 436
Balance, end of period (5,410) (6,009) (5,410) (6,009)
Pre-tax components of other comprehensive income (loss) and the related income tax expense (benefit)        
Other comprehensive income (loss), before income taxes (350) (813) (1,172) 529
Income tax expense (benefit) (71) (190) (233) 93
Other comprehensive income (loss), net of taxes (279) (623) (939) 436
Changes in Net Unrealized Gains (Losses) on Investment Securities Having No Credit Losses Recognized in the Consolidated Statement of Income (Loss) [Member]        
Accumulated other comprehensive income (loss) [Roll Forward]        
Balance, beginning of period (3,903)   (3,309)  
Other comprehensive income (loss) before reclassifications (282)   (908)  
Amounts reclassified from accumulated other comprehensive income (loss), net of tax 27   59  
Other comprehensive income (loss), net of taxes (255) (708) (849) 322
Balance, end of period (4,158)   (4,158)  
Pre-tax components of other comprehensive income (loss) and the related income tax expense (benefit)        
Other comprehensive income (loss), before income taxes (324) (903) (1,076) 405
Income tax expense (benefit) (69) (195) (227) 83
Other comprehensive income (loss), net of taxes (255) (708) (849) 322
Changes in Net Unrealized Gains (Losses) on Investment Securities Having Credit Losses Recognized in the Consolidated Statement of Income (Loss) [Member]        
Accumulated other comprehensive income (loss) [Roll Forward]        
Balance, beginning of period 182   180  
Other comprehensive income (loss) before reclassifications 0   2  
Amounts reclassified from accumulated other comprehensive income (loss), net of tax 0   0  
Other comprehensive income (loss), net of taxes 0 0 2 0
Balance, end of period 182   182  
Pre-tax components of other comprehensive income (loss) and the related income tax expense (benefit)        
Other comprehensive income (loss), before income taxes 1 0 3 0
Income tax expense (benefit) 1 0 1 0
Other comprehensive income (loss), net of taxes 0 0 2 0
Net Benefit Plan Assets and Obligations Recognized in Shareholders' Equity [Member]        
Accumulated other comprehensive income (loss) [Roll Forward]        
Balance, beginning of period (459)   (458)  
Other comprehensive income (loss) before reclassifications 1   1  
Amounts reclassified from accumulated other comprehensive income (loss), net of tax (2)   (3)  
Other comprehensive income (loss), net of taxes (1) (4) (2) (6)
Balance, end of period (460)   (460)  
Pre-tax components of other comprehensive income (loss) and the related income tax expense (benefit)        
Other comprehensive income (loss), before income taxes (2) (4) (3) (7)
Income tax expense (benefit) (1) 0 (1) (1)
Other comprehensive income (loss), net of taxes (1) (4) (2) (6)
Net Unrealized Foreign Currency Translation [Member]        
Accumulated other comprehensive income (loss) [Roll Forward]        
Balance, beginning of period (951)   (884)  
Other comprehensive income (loss) before reclassifications (23)   (90)  
Amounts reclassified from accumulated other comprehensive income (loss), net of tax 0   0  
Other comprehensive income (loss), net of taxes (23) 89 (90) 120
Balance, end of period (974)   (974)  
Pre-tax components of other comprehensive income (loss) and the related income tax expense (benefit)        
Other comprehensive income (loss), before income taxes (25) 94 (96) 131
Income tax expense (benefit) (2) 5 (6) 11
Other comprehensive income (loss), net of taxes $ (23) $ 89 $ (90) $ 120