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Commitments, Contingencies and Guarantees (Tables)
9 Months Ended
Sep. 30, 2025
Commitments and Contingencies Disclosure [Abstract]  
Credit Risk Of Off- Balance Sheet Financial Instruments By Contractual Amounts
September 30, 2025December 31, 2024
 (In millions)
Unused commitments to extend credit$67,571 $63,232 
Standby letters of credit2,281 2,096 
Commercial letters of credit82 58 
Liabilities associated with standby letters of credit38 33 
Assets associated with standby letters of credit39 35 
Reserve for unfunded credit commitments132116