v3.26.1
Allowance for Credit Losses and Reserve for Unfunded Lending Commitments - Allowance for Credit Losses and Reserve for Unfunded Lending Commitments Activity (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Allowance for Credit Losses [Roll Forward]    
Balance at beginning of the period $ 23,409  
Provision for credit losses (4,068) $ (2,369)
Allowance build (release) for credit losses 221  
Balance at the end of the period 23,630  
Financial receivable, non-interest expense 244 108
Allowance for credit losses    
Allowance for Credit Losses [Roll Forward]    
Balance at beginning of the period 23,409 16,258
Charge-offs (5,445) (3,692)
Recoveries 1,598 956
Net charge-offs (3,847) (2,736)
Provision for credit losses 4,077 2,368
Allowance build (release) for credit losses 230 (368)
Other changes (9) 9
Balance at the end of the period 23,630 15,899
Reserve for unfunded lending commitments    
Allowance for Credit Losses [Roll Forward]    
Balance at beginning of the period 142 143
Provision for credit losses 9 (1)
Balance at the end of the period 133 144
Combined allowance and reserve    
Allowance for Credit Losses [Roll Forward]    
Balance at the end of the period 23,763 16,043
Credit Card: | Allowance for credit losses    
Allowance for Credit Losses [Roll Forward]    
Balance at beginning of the period 20,066 12,974
Charge-offs (4,641) (2,978)
Recoveries 1,222 579
Net charge-offs (3,419) (2,399)
Provision for credit losses 3,411 1,926
Allowance build (release) for credit losses (8) (473)
Other changes (9) 9
Balance at the end of the period 20,049 12,510
Credit Card: | Reserve for unfunded lending commitments    
Allowance for Credit Losses [Roll Forward]    
Balance at beginning of the period 0 0
Provision for credit losses 0 0
Balance at the end of the period 0 0
Credit Card: | Combined allowance and reserve    
Allowance for Credit Losses [Roll Forward]    
Balance at the end of the period 20,049 12,510
Consumer Banking: | Allowance for credit losses    
Allowance for Credit Losses [Roll Forward]    
Balance at beginning of the period 1,892 1,884
Charge-offs (735) (676)
Recoveries 371 363
Net charge-offs (364) (313)
Provision for credit losses 519 301
Allowance build (release) for credit losses 155 (12)
Other changes 0 0
Balance at the end of the period 2,047 1,872
Consumer Banking: | Reserve for unfunded lending commitments    
Allowance for Credit Losses [Roll Forward]    
Balance at beginning of the period 0 0
Provision for credit losses 0 0
Balance at the end of the period 0 0
Consumer Banking: | Combined allowance and reserve    
Allowance for Credit Losses [Roll Forward]    
Balance at the end of the period 2,047 1,872
Commercial Banking: | Allowance for credit losses    
Allowance for Credit Losses [Roll Forward]    
Balance at beginning of the period 1,451 1,400
Charge-offs (69) (38)
Recoveries 5 14
Net charge-offs (64) (24)
Provision for credit losses 147 141
Allowance build (release) for credit losses 83 117
Other changes 0 0
Balance at the end of the period 1,534 1,517
Commercial Banking: | Reserve for unfunded lending commitments    
Allowance for Credit Losses [Roll Forward]    
Balance at beginning of the period 142 143
Provision for credit losses 9 (1)
Balance at the end of the period 133 144
Commercial Banking: | Combined allowance and reserve    
Allowance for Credit Losses [Roll Forward]    
Balance at the end of the period $ 1,667 $ 1,661