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Commitments, Contingencies And Guarantees (Tables)
 12 Months Ended
Dec. 31, 2023
Commitments and Contingencies Disclosure [Abstract]  
Schedule Of Off-Balance Sheet Instruments Commitments The following table summarizes these commitments at December 31:
(In thousands)20232022
Commitments to extend credit:
Credit card$5,367,102 $5,190,942 
Other unfunded loan commitments9,144,971 9,102,525 
Standby letters of credit, net of conveyance to other financial institutions590,551 555,858 
Commercial letters of credit2,571 4,393