Annual report [Section 13 and 15(d), not S-K Item 405]

Outstanding Loans and Leases and Allowance for Credit Losses - Allowance for Credit Losses (Details)

v3.25.4
Outstanding Loans and Leases and Allowance for Credit Losses - Allowance for Credit Losses (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Dec. 31, 2027
Dec. 31, 2026
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Financing Receivable, Allowance for Credit Loss [Line Items]          
Allowance for credit losses, period increase (decrease)     $ 44    
Decrease in allowance for loan and lease losses     37    
Reserve for unfunded lending commitments, period increase     81    
Decrease in provision for credit losses     146    
Provision for credit losses     5,675 $ 5,821 $ 4,394
Decrease in net charge-offs     400    
Net charge-offs     5,631 6,031 3,799
Outstanding loans and leases, period increase, excluding loans accounted for under the fair value option     90,600    
Credit card and other consumer          
Financing Receivable, Allowance for Credit Loss [Line Items]          
Allowance for credit losses, period increase (decrease)     (313)    
Net charge-offs     4,190 4,279 3,133
Commercial          
Financing Receivable, Allowance for Credit Loss [Line Items]          
Allowance for credit losses, period increase (decrease)     229    
Net charge-offs     1,483 1,793 709
Outstanding loans and leases, period increase, excluding loans accounted for under the fair value option     72,000    
Consumer real estate          
Financing Receivable, Allowance for Credit Loss [Line Items]          
Allowance for credit losses, period increase (decrease)     128    
Net charge-offs     $ (42) $ (41) $ (43)
Scenario, Forecast          
Financing Receivable, Allowance for Credit Loss [Line Items]          
Unemployment rate, current economic outlook (just below)   5.00%      
U.S. gross domestic product, current economic outlook (as a percent) 1.80% 1.40%