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Loans - Financing Receivable, Modified - Modification to Borrowers (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 1,300 | $ 887 | $ 2,725 | $ 2,053
% of total class of receivables | 0.41% | 0.28% | 0.85% | 0.65%
Interest rate reduction |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 242 | $ 242 | $ 594 | $ 513
Term Extension |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | 731 | 291 | 1,229 | 753
Principal balance reduction |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | 9 | 8 | 34 | 17
Principal balance reduction and term extension |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified |  |  |  | 15
Interest Rate Reduction and Term Extension |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | 264 | 281 | 588 | 540
Other |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | 54 | 65 | 280 | 215
Credit Card: |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 238 | $ 249 | $ 593 | $ 523
% of total class of receivables | 0.15% | 0.17% | 0.38% | 0.36%
Credit Card: | Interest rate reduction |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 233 | $ 242 | $ 585 | $ 513
Credit Card: | Term Extension |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | 0 | 0 | 0 | 0
Credit Card: | Principal balance reduction |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | 0 | 0 | 0 | 0
Credit Card: | Principal balance reduction and term extension |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified |  |  |  | 0
Credit Card: | Interest Rate Reduction and Term Extension |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | 5 | 7 | 8 | 10
Credit Card: | Other |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | 0 | 0 | 0 | 0
Credit Card: | Domestic Card |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 178 | $ 207 | $ 480 | $ 447
% of total class of receivables | 0.12% | 0.15% | 0.32% | 0.32%
Credit Card: | Domestic Card | Interest rate reduction |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 173 | $ 200 | $ 472 | $ 437
Weighted-average interest rate reduction | 20.49% | 19.40% | 20.19% | 19.19%
Credit Card: | Domestic Card | Term Extension |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 0 | $ 0 | $ 0 | $ 0
Payment delay duration (in months) | 12 months | 12 months | 12 months | 12 months
Credit Card: | Domestic Card | Principal balance reduction |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 0 | $ 0 | $ 0 | $ 0
Principal balance reduction | 0 | 0 | 0 | 0
Credit Card: | Domestic Card | Principal balance reduction and term extension |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified |  |  |  | 0
Credit Card: | Domestic Card | Interest Rate Reduction and Term Extension |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | 5 | 7 | 8 | 10
Credit Card: | Domestic Card | Other |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | 0 | 0 | 0 | 0
Credit Card: | International card businesses |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 60 | $ 42 | $ 113 | $ 76
% of total class of receivables | 0.83% | 0.65% | 1.56% | 1.17%
Credit Card: | International card businesses | Interest rate reduction |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 60 | $ 42 | $ 113 | $ 76
Weighted-average interest rate reduction | 27.01% | 27.41% | 26.76% | 27.08%
Credit Card: | International card businesses | Term Extension |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 0 | $ 0 | $ 0 | $ 0
Principal balance reduction | 0 | 0 | 0 | 0
Credit Card: | International card businesses | Principal balance reduction |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | 0 | 0 | 0 | 0
Principal balance reduction | 0 | 0 | 0 | 0
Credit Card: | International card businesses | Principal balance reduction and term extension |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified |  |  |  | 0
Credit Card: | International card businesses | Interest Rate Reduction and Term Extension |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | 0 | 0 | 0 | 0
Credit Card: | International card businesses | Other |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | 0 | 0 | 0 | 0
Consumer Banking: |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 282 | $ 281 | $ 617 | $ 610
% of total class of receivables | 0.37% | 0.36% | 0.80% | 0.79%
Consumer Banking: | Interest rate reduction |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 0 | $ 0 | $ 0 | $ 0
Consumer Banking: | Term Extension |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | 13 | 16 | 21 | 79
Consumer Banking: | Principal balance reduction |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | 9 | 8 | 19 | 17
Consumer Banking: | Principal balance reduction and term extension |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified |  |  |  | 0
Consumer Banking: | Interest Rate Reduction and Term Extension |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | 258 | 248 | 573 | 504
Consumer Banking: | Other |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | 2 | 9 | 4 | 10
Consumer Banking: | Auto |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 279 | $ 272 | $ 612 | $ 600
% of total class of receivables | 0.37% | 0.36% | 0.81% | 0.79%
Consumer Banking: | Auto | Interest rate reduction |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 0 | $ 0 | $ 0 | $ 0
Weighted-average interest rate reduction | 8.83% | 8.67% | 8.78% | 8.74%
Consumer Banking: | Auto | Term Extension |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 10 | $ 14 | $ 17 | $ 76
Payment delay duration (in months) | 6 months | 6 months | 6 months | 6 months
Consumer Banking: | Auto | Principal balance reduction |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 9 | $ 8 | $ 19 | $ 17
Principal balance reduction | 0 | 0 | 0 | 1
Consumer Banking: | Auto | Principal balance reduction and term extension |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified |  |  |  | 0
Consumer Banking: | Auto | Interest Rate Reduction and Term Extension |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | 258 | 248 | 573 | 504
Consumer Banking: | Auto | Other |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | 2 | 2 | 3 | 3
Consumer Banking: | Retail banking |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 3 | $ 9 | $ 5 | $ 10
% of total class of receivables | 0.22% | 0.62% | 0.42% | 0.75%
Consumer Banking: | Retail banking | Interest rate reduction |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 0 | $ 0 | $ 0 | $ 0
Weighted-average interest rate reduction | 0.00% | 0.00% | 3.48% | 2.00%
Consumer Banking: | Retail banking | Term Extension |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 3 | $ 2 | $ 4 | $ 3
Payment delay duration (in months) | 25 months | 8 months | 4 months | 13 months
Consumer Banking: | Retail banking | Principal balance reduction |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 0 | $ 0 | $ 0 | $ 0
Principal balance reduction | 0 | 0 | 0 | 0
Consumer Banking: | Retail banking | Principal balance reduction and term extension |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified |  |  |  | 0
Consumer Banking: | Retail banking | Interest Rate Reduction and Term Extension |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | 0 | 0 | 0 | 0
Consumer Banking: | Retail banking | Other |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | 0 | 7 | 1 | 7
Commercial Banking: |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 780 | $ 357 | $ 1,515 | $ 920
% of total class of receivables | 0.90% | 0.39% | 1.74% | 1.01%
Commercial Banking: | Interest rate reduction |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 9 | $ 0 | $ 9 | $ 0
Commercial Banking: | Term Extension |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | 718 | 275 | 1,208 | 674
Commercial Banking: | Principal balance reduction |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | 0 | 0 | 15 | 0
Commercial Banking: | Principal balance reduction and term extension |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified |  |  |  | 15
Commercial Banking: | Interest Rate Reduction and Term Extension |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | 1 | 26 | 7 | 26
Commercial Banking: | Other |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | 52 | 56 | 276 | 205
Commercial Banking: | Commercial and multifamily real estate |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 307 | $ 128 | $ 672 | $ 381
% of total class of receivables | 0.96% | 0.36% | 2.09% | 1.07%
Commercial Banking: | Commercial and multifamily real estate | Interest rate reduction |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 0 | $ 0 | $ 0 | $ 0
Weighted-average interest rate reduction | 0.00% | 0.00% | 0.79% | 0.00%
Commercial Banking: | Commercial and multifamily real estate | Term Extension |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 286 | $ 128 | $ 513 | $ 327
Payment delay duration (in months) | 18 months | 11 months | 11 months | 15 months
Commercial Banking: | Commercial and multifamily real estate | Principal balance reduction |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 0 | $ 0 | $ 0 | $ 0
Principal balance reduction | 0 | 0 | 0 | 20
Commercial Banking: | Commercial and multifamily real estate | Principal balance reduction and term extension |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified |  |  |  | 0
Commercial Banking: | Commercial and multifamily real estate | Interest Rate Reduction and Term Extension |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | 0 | 0 | 0 | 0
Commercial Banking: | Commercial and multifamily real estate | Other |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | 21 | 0 | 159 | 54
Commercial Banking: | Commercial and industrial |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 473 | $ 229 | $ 843 | $ 539
% of total class of receivables | 0.87% | 0.41% | 1.54% | 0.97%
Commercial Banking: | Commercial and industrial | Interest rate reduction |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 9 | $ 0 | $ 9 | $ 0
Weighted-average interest rate reduction | 2.14% | 0.25% | 1.90% | 0.25%
Commercial Banking: | Commercial and industrial | Term Extension |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 432 | $ 147 | $ 695 | $ 347
Payment delay duration (in months) | 18 months | 17 months | 16 months | 9 months
Commercial Banking: | Commercial and industrial | Principal balance reduction |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 0 | $ 0 | $ 15 | $ 0
Principal balance reduction | 0 | 0 | 15 | 3
Commercial Banking: | Commercial and industrial | Principal balance reduction and term extension |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified |  |  |  | 15
Commercial Banking: | Commercial and industrial | Interest Rate Reduction and Term Extension |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | 1 | 26 | 7 | 26
Commercial Banking: | Commercial and industrial | Other |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 31 | $ 56 | $ 117 | $ 151

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