Commitments, Contingent Liabilities and Guarantees - Risk Rating Under the Risk Rating System (Details) - Commitments to extend credit - USD ($) $ in Millions |
Jun. 30, 2021 |
Dec. 31, 2020 |
|---|---|---|
| Line of Credit Facility | ||
| Commitments | $ 77,081 | $ 74,499 |
| Pass | ||
| Line of Credit Facility | ||
| Commitments | 74,230 | 71,386 |
| Special mention | ||
| Line of Credit Facility | ||
| Commitments | 1,468 | 2,049 |
| Substandard | ||
| Line of Credit Facility | ||
| Commitments | 1,383 | 1,063 |
| Doubtful | ||
| Line of Credit Facility | ||
| Commitments | $ 0 | $ 1 |