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Loans - Trouble Debt Restructurings (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2023 | Mar. 31, 2022
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans Modified |  | $ 505
Loans modified | $ 787 |
Average rate reduction | 0.25% |
Interest rate reduction: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | $ 188 |
Term extension: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | 240 |
Principal balance reduction: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | 7 |
Interest rate reduction and term extension: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | 202 |
Principal Balance reduction and term extension: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | 17 |
Other |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | 133 |
Credit Card |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans Modified |  | $ 96
Loans modified | $ 188 |
Average rate reduction | 0.14% |
Credit Card | Interest rate reduction: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
% of TDR Activity |  | 100.00%
Average Rate Reduction |  | 19.40%
Loans modified | $ 188 |
Average rate reduction | 20.37% |
Credit Card | Term extension: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | $ 0 |
Credit Card | Principal balance reduction: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | 0 |
Credit Card | Interest rate reduction and term extension: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | 0 |
Credit Card | Principal Balance reduction and term extension: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | 0 |
Credit Card | Other |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | 0 |
Credit Card | Domestic Card |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | $ 150 |
Average rate reduction | 0.11% |
Credit Card | Domestic Card | Interest rate reduction: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | $ 150 |
Average rate reduction | 19.02% |
Credit Card | Domestic Card | Term extension: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | $ 0 |
Credit Card | Domestic Card | Principal balance reduction: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | 0 |
Credit Card | Domestic Card | Interest rate reduction and term extension: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | 0 |
Credit Card | Domestic Card | Principal Balance reduction and term extension: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | 0 |
Credit Card | Domestic Card | Other |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | 0 |
Credit Card | International card businesses |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | $ 38 |
Average rate reduction | 0.62% |
Credit Card | International card businesses | Interest rate reduction: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | $ 38 |
Average rate reduction | 25.74% |
Credit Card | International card businesses | Term extension: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | $ 0 |
Credit Card | International card businesses | Principal balance reduction: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | 0 |
Credit Card | International card businesses | Interest rate reduction and term extension: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | 0 |
Credit Card | International card businesses | Principal Balance reduction and term extension: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | 0 |
Credit Card | International card businesses | Other |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | 0 |
Consumer Banking |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans Modified |  | $ 240
Loans modified | $ 255 |
Average rate reduction | 0.33% |
Consumer Banking | Interest rate reduction: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
% of TDR Activity |  | 55.00%
Average Rate Reduction |  | 8.80%
Loans modified | $ 0 |
Consumer Banking | Term extension: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
% of TDR Activity |  | 97.00%
Average Term Extension (Months) |  | 4 months
Loans modified | $ 45 |
Average term extension (months) | 5 months |
Consumer Banking | Principal balance reduction: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | $ 7 |
Gross balance reduction | 0 |
Consumer Banking | Interest rate reduction and term extension: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | $ 202 |
Average term extension (months) | 6 months |
Average rate reduction | 8.75% |
Consumer Banking | Principal Balance reduction and term extension: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | $ 0 |
Consumer Banking | Other |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | 1 |
Consumer Banking | Auto |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans Modified |  | $ 239
Loans modified | $ 252 |
Average rate reduction | 0.33% |
Consumer Banking | Auto | Interest rate reduction: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
% of TDR Activity |  | 55.00%
Average Rate Reduction |  | 8.80%
Loans modified | $ 0 |
Consumer Banking | Auto | Term extension: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
% of TDR Activity |  | 97.00%
Average Term Extension (Months) |  | 4 months
Loans modified | $ 42 |
Average term extension (months) | 4 months |
Consumer Banking | Auto | Principal balance reduction: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | $ 7 |
Gross balance reduction | 0 |
Consumer Banking | Auto | Interest rate reduction and term extension: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | $ 202 |
Average term extension (months) | 6 months |
Average rate reduction | 8.75% |
Consumer Banking | Auto | Principal Balance reduction and term extension: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | $ 0 |
Consumer Banking | Auto | Other |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | 1 |
Consumer Banking | Retail banking |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans Modified |  | $ 1
Loans modified | $ 3 |
Average rate reduction | 0.18% |
Consumer Banking | Retail banking | Interest rate reduction: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | $ 0 |
Consumer Banking | Retail banking | Term extension: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
% of TDR Activity |  | 100.00%
Average Term Extension (Months) |  | 6 months
Loans modified | $ 3 |
Average term extension (months) | 14 months |
Consumer Banking | Retail banking | Principal balance reduction: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | $ 0 |
Consumer Banking | Retail banking | Interest rate reduction and term extension: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | 0 |
Consumer Banking | Retail banking | Principal Balance reduction and term extension: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | 0 |
Consumer Banking | Retail banking | Other |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | 0 |
Commercial Banking |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans Modified |  | $ 169
Loans modified | $ 344 |
Average rate reduction | 0.37% |
Commercial Banking | Interest rate reduction: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
% of TDR Activity |  | 6.00%
Average Rate Reduction |  | 0.59%
Loans modified | $ 0 |
Commercial Banking | Term extension: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
% of TDR Activity |  | 68.00%
Average Term Extension (Months) |  | 11 months
Loans modified | $ 195 |
Average term extension (months) | 8 months |
Commercial Banking | Principal balance reduction: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | $ 0 |
Commercial Banking | Interest rate reduction and term extension: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | 0 |
Commercial Banking | Principal Balance reduction and term extension: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | 17 |
Gross balance reduction | $ 3 |
Average term extension (months) | 60 months |
Commercial Banking | Other |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | $ 132 |
Commercial Banking | Commercial and multifamily real estate |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans Modified |  | $ 131
Loans modified | $ 129 |
Average rate reduction | 0.35% |
Commercial Banking | Commercial and multifamily real estate | Interest rate reduction: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
% of TDR Activity |  | 7.00%
Average Rate Reduction |  | 0.59%
Loans modified | $ 0 |
Commercial Banking | Commercial and multifamily real estate | Term extension: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
% of TDR Activity |  | 62.00%
Average Term Extension (Months) |  | 12 months
Loans modified | $ 129 |
Average term extension (months) | 8 months |
Commercial Banking | Commercial and multifamily real estate | Principal balance reduction: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | $ 0 |
Commercial Banking | Commercial and multifamily real estate | Interest rate reduction and term extension: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | 0 |
Commercial Banking | Commercial and multifamily real estate | Principal Balance reduction and term extension: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | 0 |
Commercial Banking | Commercial and multifamily real estate | Other |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | 0 |
Commercial Banking | Commercial and industrial |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans Modified |  | $ 38
Loans modified | $ 215 |
Average rate reduction | 0.38% |
Commercial Banking | Commercial and industrial | Interest rate reduction: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | $ 0 |
Commercial Banking | Commercial and industrial | Term extension: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
% of TDR Activity |  | 86.00%
Average Term Extension (Months) |  | 10 months
Loans modified | $ 66 |
Average term extension (months) | 7 months |
Commercial Banking | Commercial and industrial | Principal balance reduction: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | $ 0 |
Commercial Banking | Commercial and industrial | Interest rate reduction and term extension: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | 0 |
Commercial Banking | Commercial and industrial | Principal Balance reduction and term extension: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | 17 |
Gross balance reduction | $ 3 |
Average term extension (months) | 60 months |
Commercial Banking | Commercial and industrial | Other |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans modified | $ 132 |
Domestic credit card: | Credit Card |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans Modified |  | $ 62
Domestic credit card: | Credit Card | Interest rate reduction: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
% of TDR Activity |  | 100.00%
Average Rate Reduction |  | 14.67%
International card businesses: | Credit Card |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Total Loans Modified |  | $ 34
International card businesses: | Credit Card | Interest rate reduction: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
% of TDR Activity |  | 100.00%
Average Rate Reduction |  | 28.00%

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