v3.26.1
Loans - FDM Disclosure - Modification to Borrowers (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2025
Jun. 30, 2026
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans $ 6,983 $ 6,983 $ 6,600
Commitments to lend on loans modified in TDRs 197 197 112
Financing receivable, modified, subsequent default 432 1,400  
Current      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 5,984 5,984 5,314
30-59 days      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 357 357 446
60-89 days      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 235 235 314
Greater than 90 days      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 407 407 526
Total Delinquent Loans      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 999 999 1,286
Credit Card:      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 4,404 4,404 4,092
Credit Card: | Current      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 3,671 3,671 3,341
Credit Card: | 30-59 days      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 232 232 242
Credit Card: | 60-89 days      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 163 163 170
Credit Card: | Greater than 90 days      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 338 338 339
Credit Card: | Total Delinquent Loans      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 733 733 751
Credit Card: | Domestic credit card      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 4,061 4,061 3,743
Financing receivable, modified, subsequent default   3,100  
Credit Card: | Domestic credit card | Current      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 3,423 3,423 3,098
Credit Card: | Domestic credit card | 30-59 days      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 200 200 210
Credit Card: | Domestic credit card | 60-89 days      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 141 141 147
Credit Card: | Domestic credit card | Greater than 90 days      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 297 297 288
Credit Card: | Domestic credit card | Total Delinquent Loans      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 638 638 645
Credit Card: | Personal loans      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 208 208 196
Credit Card: | Personal loans | Current      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 171 171 159
Credit Card: | Personal loans | 30-59 days      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 20 20 19
Credit Card: | Personal loans | 60-89 days      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 12 12 12
Credit Card: | Personal loans | Greater than 90 days      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 5 5 6
Credit Card: | Personal loans | Total Delinquent Loans      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 37 37 37
Credit Card: | International card businesses      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 135 135 153
Credit Card: | International card businesses | Current      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 77 77 84
Credit Card: | International card businesses | 30-59 days      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 12 12 13
Credit Card: | International card businesses | 60-89 days      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 10 10 11
Credit Card: | International card businesses | Greater than 90 days      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 36 36 45
Credit Card: | International card businesses | Total Delinquent Loans      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 58 58 69
Consumer Banking:      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 836 836 1,535
Consumer Banking: | Current      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 648 648 1,169
Consumer Banking: | 30-59 days      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 104 104 204
Consumer Banking: | 60-89 days      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 63 63 128
Consumer Banking: | Greater than 90 days      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 21 21 34
Consumer Banking: | Total Delinquent Loans      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 188 188 366
Consumer Banking: | Auto      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 834 834 1,529
Consumer Banking: | Auto | Current      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 646 646 1,165
Consumer Banking: | Auto | 30-59 days      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 104 104 204
Consumer Banking: | Auto | 60-89 days      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 63 63 127
Consumer Banking: | Auto | Greater than 90 days      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 21 21 33
Consumer Banking: | Auto | Total Delinquent Loans      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 188 188 364
Consumer Banking: | Retail banking      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 2 2 6
Consumer Banking: | Retail banking | Current      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 2 2 4
Consumer Banking: | Retail banking | 30-59 days      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 0 0 0
Consumer Banking: | Retail banking | 60-89 days      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 0 0 1
Consumer Banking: | Retail banking | Greater than 90 days      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 0 0 1
Consumer Banking: | Retail banking | Total Delinquent Loans      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 0 0 2
Commercial Banking:      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 1,743 1,743 973
Commercial Banking: | Current      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 1,665 1,665 804
Commercial Banking: | 30-59 days      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 21 21 0
Commercial Banking: | 60-89 days      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 9 9 16
Commercial Banking: | Greater than 90 days      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 48 48 153
Commercial Banking: | Total Delinquent Loans      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 78 78 169
Commercial Banking: | Commercial and multifamily real estate      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 769 769 194
Commercial Banking: | Commercial and multifamily real estate | Current      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 748 748 194
Commercial Banking: | Commercial and multifamily real estate | 30-59 days      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 21 21 0
Commercial Banking: | Commercial and multifamily real estate | 60-89 days      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 0 0 0
Commercial Banking: | Commercial and multifamily real estate | Greater than 90 days      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 0 0 0
Commercial Banking: | Commercial and multifamily real estate | Total Delinquent Loans      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 21 21 0
Commercial Banking: | Commercial and industrial      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 974 974 779
Commercial Banking: | Commercial and industrial | Current      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 917 917 610
Commercial Banking: | Commercial and industrial | 30-59 days      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 0 0 0
Commercial Banking: | Commercial and industrial | 60-89 days      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 9 9 16
Commercial Banking: | Commercial and industrial | Greater than 90 days      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans 48 48 153
Commercial Banking: | Commercial and industrial | Total Delinquent Loans      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Total Loans $ 57 $ 57 $ 169