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Loans - TDR - Subsequent Defaults (Details) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 USD ($) contract | Dec. 31, 2021 USD ($) contract
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Number of Contracts | contract | 127,569 | 86,472
Amount | $ | $ 523 | $ 428
Credit Card: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Number of Contracts | contract | 111,461 | 77,608
Amount | $ | $ 154 | $ 122
Consumer Banking: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Number of Contracts | contract | 16,101 | 8,856
Amount | $ | $ 286 | $ 136
Consumer Banking: | Auto |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Number of Contracts | contract | 16,100 | 8,847
Amount | $ | $ 285 | $ 136
Consumer Banking: | Retail banking |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Number of Contracts | contract | 1 | 9
Amount | $ | $ 1 | $ 0
Commercial Banking: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Number of Contracts | contract | 7 | 8
Amount | $ | $ 83 | $ 170
Commercial Banking: | Commercial and industrial |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Number of Contracts | contract | 5 | 7
Amount | $ | $ 56 | $ 120
Commercial Banking: | Commercial and multifamily real estate |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Number of Contracts | contract | 2 | 1
Amount | $ | $ 27 | $ 50
Domestic credit card: | Credit Card: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Number of Contracts | contract | 37,029 | 18,694
Amount | $ | $ 75 | $ 35
International card businesses: | Credit Card: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Number of Contracts | contract | 74,432 | 58,914
Amount | $ | $ 79 | $ 87

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