Commitments, Contingencies And Guarantees (Schedule Of Off-Balance Sheet Instruments Commitments) (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Commercial letters of credit	$ 1,698	$ 2,728
Credit Card [Member]
Commitments to extend credit	6,110,965	5,796,427
Other [Member]
Commitments to extend credit	9,696,270	9,616,132
Financial Standby Letter of Credit [Member]
Standby letters of credit, net of conveyances to others	$ 648,168	$ 561,505