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Commitments, Contingencies and Guarantees (Tables)
9 Months Ended
Sep. 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:
September 30, 2022December 31, 2021
 (In millions)
Unused commitments to extend credit$66,907 $60,935 
Standby letters of credit1,979 1,779 
Commercial letters of credit48 97 
Liabilities associated with standby letters of credit33 28 
Assets associated with standby letters of credit33 29 
Reserve for unfunded credit commitments121 95