v3.26.1
Other Comprehensive (Loss) Income (Schedule of Reclassifications Out of AOCI) (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Net gain on securities transactions $ 0 $ 87
Income tax expense (30,754) (27,825)
Compensation and employee benefits (66,196) (62,366)
Total reclassification 79,417 64,028
Reclassification adjustment    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Total reclassification 50 1,122
Reclassification adjustment | Available for sale debt securities:    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Net gain on securities transactions 0 87
Income tax expense 0 (25)
Total reclassification 0 62
Reclassification adjustment | Realized net gains (losses) on derivatives    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Interest expense 93 1,940
Income tax expense (26) (550)
Total reclassification 67 1,390
Reclassification adjustment | Post-retirement obligations:    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Income tax expense 7 130
Compensation and employee benefits (24) (460)
Total reclassification $ (17) $ (330)