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Commitments, Contingencies and Guarantees (Tables) | 12 Months Ended
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Dec. 31, 2022
Commitments and Contingencies Disclosure [Abstract] |
Credit Risk Of Off- Balance Sheet Financial Instruments By Contractual Amounts | Credit risk associated with these instruments as of December 31 is represented by the contractual amounts indicated in the following table:
| 2022 |  | 2021
| (In millions)
Unused commitments to extend credit | $ | 65,460 |  |  | $ | 60,935 |
Standby letters of credit | 1,962 |  |  | 1,779 |
Commercial letters of credit | 75 |  |  | 97 |
Liabilities associated with standby letters of credit | 35 |  |  | 28 |
Assets associated with standby letters of credit | 37 |  |  | 29 |
Reserve for unfunded credit commitments | 118 |  | 95 |

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