v3.26.1
Loans and Related Allowance for Credit Losses (Consumer FDMs) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Total commercial lending    
Financing Receivable [Line Items]    
Amortized cost basis, modified $ 855 $ 1,036
% of Loan Class 0.33% 0.47%
Financing receivable, aging analysis $ 3,175 $ 2,624
Total commercial lending | Current or Less Than 30 Days Past Due    
Financing Receivable [Line Items]    
Financing receivable, aging analysis 2,710 1,974
Total commercial lending | 30-59 Days Past Due    
Financing Receivable [Line Items]    
Financing receivable, aging analysis 6 17
Total commercial lending | 60-89 Days Past Due    
Financing Receivable [Line Items]    
Financing receivable, aging analysis 13 0
Total commercial lending | 90 Days or More Past Due    
Financing Receivable [Line Items]    
Financing receivable, aging analysis 0 0
Total commercial lending | Nonperforming Loans    
Financing Receivable [Line Items]    
Financing receivable, aging analysis 446 633
Total commercial lending | Payment Delay    
Financing Receivable [Line Items]    
Amortized cost basis, modified 141 74
Total commercial lending | Other    
Financing Receivable [Line Items]    
Amortized cost basis, modified 85 121
Total consumer lending    
Financing Receivable [Line Items]    
Amortized cost basis, modified $ 79 $ 60
% of Loan Class 0.08% 0.06%
Financing receivable, aging analysis $ 251 $ 200
Total consumer lending | Current or Less Than 30 Days Past Due    
Financing Receivable [Line Items]    
Financing receivable, aging analysis 67 58
Total consumer lending | 30-59 Days Past Due    
Financing Receivable [Line Items]    
Financing receivable, aging analysis 4 4
Total consumer lending | 60-89 Days Past Due    
Financing Receivable [Line Items]    
Financing receivable, aging analysis 4 4
Total consumer lending | 90 Days or More Past Due    
Financing Receivable [Line Items]    
Financing receivable, aging analysis 6 7
Total consumer lending | Nonperforming Loans    
Financing Receivable [Line Items]    
Financing receivable, aging analysis 170 127
Total consumer lending | Payment Delay    
Financing Receivable [Line Items]    
Amortized cost basis, modified $ 47 $ 29
Weighted average payment deferral term 10 months 6 months
Total consumer lending | Repayment plan    
Financing Receivable [Line Items]    
Amortized cost basis, modified $ 17 $ 20
Total consumer lending | Other    
Financing Receivable [Line Items]    
Amortized cost basis, modified $ 15 $ 11