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Loans - Financing Receivable, Modified - Modification to Borrowers (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 1,042 | $ 875 | $ 1,899 | $ 1,534
% of total class of receivables | 0.33% | 0.28% | 0.60% | 0.49%
Interest rate reduction |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 235 | $ 194 | $ 447 | $ 346
Term Extension |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | 407 | 361 | 712 | 563
Principal balance reduction |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | 23 | 71 | 30 | 76
Principal balance reduction and term extension |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified |  |  |  | 17
Interest Rate Reduction and Term Extension |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | 206 | 173 | 450 | 330
Other |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | 171 | 76 | 260 | 202
Credit Card: |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 240 | $ 194 | $ 455 | $ 346
% of total class of receivables | 0.16% | 0.14% | 0.30% | 0.24%
Credit Card: | Interest rate reduction |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 235 | $ 194 | $ 447 | $ 346
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 | 0 | 8 | 0
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 | $ 183 | $ 154 | $ 369 | $ 285
% of total class of receivables | 0.12% | 0.11% | 0.25% | 0.21%
Credit Card: | Domestic Card | Interest rate reduction |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 178 | $ 154 | $ 361 | $ 285
Weighted-average interest rate reduction | 20.13% | 19.06% | 20.06% | 19.04%
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 |
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 | 0 | 8 | 0
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 | $ 57 | $ 40 | $ 86 | $ 61
% of total class of receivables | 0.83% | 0.61% | 1.26% | 0.94%
Credit Card: | International card businesses | Interest rate reduction |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 57 | $ 40 | $ 86 | $ 61
Weighted-average interest rate reduction | 27.08% | 27.99% | 26.62% | 26.90%
Credit Card: | International card businesses | Term Extension |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 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 | $ 211 | $ 223 | $ 439 | $ 424
% of total class of receivables | 0.28% | 0.29% | 0.58% | 0.55%
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 | 5 | 42 | 12 | 80
Consumer Banking: | Principal balance reduction |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | 8 | 7 | 14 | 12
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 | 195 | 173 | 410 | 330
Consumer Banking: | Other |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | 3 | 1 | 3 | 2
Consumer Banking: | Auto |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 210 | $ 222 | $ 436 | $ 421
% of total class of receivables | 0.28% | 0.29% | 0.59% | 0.55%
Consumer Banking: | Auto | Interest rate reduction |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 0 | $ 0 | $ 0 | $ 0
Weighted-average interest rate reduction | 8.89% | 8.82% | 8.75% | 8.78%
Consumer Banking: | Auto | Term Extension |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 5 | $ 41 | $ 10 | $ 77
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 | $ 8 | $ 7 | $ 14 | $ 12
Principal balance reduction | 0 | 0 | 0 | 0
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 | 195 | 173 | 410 | 330
Consumer Banking: | Auto | Other |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | 2 | 1 | 2 | 2
Consumer Banking: | Retail banking |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 1 | $ 1 | $ 3 | $ 3
% of total class of receivables | 0.08% | 0.08% | 0.21% | 0.21%
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 | 3.48% | 2.00% | 3.48% | 2.00%
Consumer Banking: | Retail banking | Term Extension |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 0 | $ 1 | $ 2 | $ 3
Payment delay duration (in months) | 36 months | 20 months | 11 months | 15 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 | 1 | 0 | 1 | 0
Commercial Banking: |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 591 | $ 458 | $ 1,005 | $ 764
% of total class of receivables | 0.67% | 0.50% | 1.14% | 0.83%
Commercial Banking: | Interest rate reduction |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 0 | $ 0 | $ 0 | $ 0
Commercial Banking: | Term Extension |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | 402 | 319 | 700 | 483
Commercial Banking: | Principal balance reduction |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | 15 | 64 | 16 | 64
Commercial Banking: | Principal balance reduction and term extension |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified |  |  |  | 17
Commercial Banking: | Interest Rate Reduction and Term Extension |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | 6 | 0 | 32 | 0
Commercial Banking: | Other |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | 168 | 75 | 257 | 200
Commercial Banking: | Commercial and multifamily real estate |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 267 | $ 265 | $ 541 | $ 364
% of total class of receivables | 0.81% | 0.74% | 1.65% | 1.01%
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 | $ 214 | $ 147 | $ 373 | $ 246
Payment delay duration (in months) | 9 months | 16 months | 7 months | 16 months
Commercial Banking: | Commercial and multifamily real estate | Principal balance reduction |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 0 | $ 64 | $ 0 | $ 64
Principal balance reduction | 0 | 20 | 0 | 23
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 | 26 | 0
Commercial Banking: | Commercial and multifamily real estate | Other |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | 53 | 54 | 142 | 54
Commercial Banking: | Commercial and industrial |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 324 | $ 193 | $ 464 | $ 400
% of total class of receivables | 0.58% | 0.35% | 0.83% | 0.72%
Commercial Banking: | Commercial and industrial | Interest rate reduction |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 0 | $ 0 | $ 0 | $ 0
Weighted-average interest rate reduction | 1.50% | 0.00% | 1.50% | 0.00%
Commercial Banking: | Commercial and industrial | Term Extension |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 188 | $ 172 | $ 327 | $ 237
Payment delay duration (in months) | 15 months | 4 months | 14 months | 6 months
Commercial Banking: | Commercial and industrial | Principal balance reduction |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 15 | $ 0 | $ 16 | $ 0
Principal balance reduction | 1 | 0 | 15 | 0
Commercial Banking: | Commercial and industrial | Principal balance reduction and term extension |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified |  |  |  | 17
Commercial Banking: | Commercial and industrial | Interest Rate Reduction and Term Extension |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | 6 | 0 | 6 | 0
Commercial Banking: | Commercial and industrial | Other |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Total loans modified | $ 115 | $ 21 | $ 115 | $ 146

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