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Commitments, Contingencies and Guarantees (Tables)
6 Months Ended
Jun. 30, 2022
Commitments and Contingencies Disclosure [Abstract]  
Credit Risk Of Off-Balance Sheet Financial Instruments By Contractual Amounts
Credit risk associated with these instruments is represented by the contractual amounts indicated in the following table:
June 30, 2022December 31, 2021
 (In millions)
Unused commitments to extend credit$64,688 $60,935 
Standby letters of credit1,862 1,779 
Commercial letters of credit54 97 
Liabilities associated with standby letters of credit30 28 
Assets associated with standby letters of credit31 29 
Reserve for unfunded credit commitments89 95