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Loans - FDM Disclosure - Modification to Borrowers (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | $ 2,748 | $ 2,860
Commitments to lend on loans modified in TDRs | 334 | 109
Current |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 2,222 | 2,237
30-59 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 172 | 197
60-89 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 142 | 131
Greater than 90 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 212 | 295
Total Delinquent Loans |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 526 | 623
Credit Card: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 702 | 699
Credit Card: | Current |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 465 | 433
Credit Card: | 30-59 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 68 | 90
Credit Card: | 60-89 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 53 | 55
Credit Card: | Greater than 90 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 116 | 121
Credit Card: | Total Delinquent Loans |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 237 | 266
Credit Card: | Domestic Card |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 579 | 602
Credit Card: | Domestic Card | Current |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 397 | 384
Credit Card: | Domestic Card | 30-59 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 57 | 81
Credit Card: | Domestic Card | 60-89 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 43 | 46
Credit Card: | Domestic Card | Greater than 90 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 82 | 91
Credit Card: | Domestic Card | Total Delinquent Loans |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 182 | 218
Credit Card: | International card businesses |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 123 | 97
Credit Card: | International card businesses | Current |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 68 | 49
Credit Card: | International card businesses | 30-59 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 11 | 9
Credit Card: | International card businesses | 60-89 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 10 | 9
Credit Card: | International card businesses | Greater than 90 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 34 | 30
Credit Card: | International card businesses | Total Delinquent Loans |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 55 | 48
Consumer Banking: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 728 | 772
Consumer Banking: | Current |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 526 | 558
Consumer Banking: | 30-59 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 102 | 107
Consumer Banking: | 60-89 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 70 | 76
Consumer Banking: | Greater than 90 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 30 | 31
Consumer Banking: | Total Delinquent Loans |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 202 | 214
Consumer Banking: | Auto |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 722 | 762
Consumer Banking: | Auto | Current |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 522 | 548
Consumer Banking: | Auto | 30-59 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 101 | 107
Consumer Banking: | Auto | 60-89 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 70 | 76
Consumer Banking: | Auto | Greater than 90 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 29 | 31
Consumer Banking: | Auto | Total Delinquent Loans |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 200 | 214
Consumer Banking: | Retail banking |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 6 | 10
Consumer Banking: | Retail banking | Current |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 4 | 10
Consumer Banking: | Retail banking | 30-59 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 1 | 0
Consumer Banking: | Retail banking | 60-89 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 0 | 0
Consumer Banking: | Retail banking | Greater than 90 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 1 | 0
Consumer Banking: | Retail banking | Total Delinquent Loans |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 2 | 0
Commercial Banking: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 1,318 | 1,389
Commercial Banking: | Current |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 1,231 | 1,246
Commercial Banking: | 30-59 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 2 | 0
Commercial Banking: | 60-89 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 19 | 0
Commercial Banking: | Greater than 90 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 66 | 143
Commercial Banking: | Total Delinquent Loans |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 87 | 143
Commercial Banking: | Commercial and multifamily real estate |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 539 | 465
Commercial Banking: | Commercial and multifamily real estate | Current |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 535 | 426
Commercial Banking: | Commercial and multifamily real estate | 30-59 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 2 | 0
Commercial Banking: | Commercial and multifamily real estate | 60-89 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 0 | 0
Commercial Banking: | Commercial and multifamily real estate | Greater than 90 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 2 | 39
Commercial Banking: | Commercial and multifamily real estate | Total Delinquent Loans |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 4 | 39
Commercial Banking: | Commercial and industrial |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 779 | 924
Commercial Banking: | Commercial and industrial | Current |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 696 | 820
Commercial Banking: | Commercial and industrial | 30-59 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 0 | 0
Commercial Banking: | Commercial and industrial | 60-89 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 19 | 0
Commercial Banking: | Commercial and industrial | Greater than 90 days |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | 64 | 104
Commercial Banking: | Commercial and industrial | Total Delinquent Loans |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans | $ 83 | $ 104

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