v3.26.3
ACCUMULATED OTHER COMPREHENSIVE (LOSS) INCOME - Schedule of Reclassifications Out of Accumulated Other Comprehensive (Loss) Income (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Amount Reclassified from Accumulated Other Comprehensive Income        
Total before tax $ (60,333) $ (154,127) $ (269,151) $ (399,856)
Tax impact 27,511 26,295 75,552 81,629
Total reclassifications for the period (32,822) (127,832) (193,599) (318,227)
Amount Reclassified from Accumulated Other Comprehensive Income        
Amount Reclassified from Accumulated Other Comprehensive Income        
Total reclassifications for the period 31 157 259 438
Defined Benefit Pension Plans | Amount Reclassified from Accumulated Other Comprehensive Income        
Amount Reclassified from Accumulated Other Comprehensive Income        
Total before tax 55 225 384 632
Tax impact (24) (68) (125) (194)
Total reclassifications for the period 31 157 259 438
Amortization of net loss | Amount Reclassified from Accumulated Other Comprehensive Income        
Amount Reclassified from Accumulated Other Comprehensive Income        
Total before tax 30 200 304 559
Amortization of prior service cost | Amount Reclassified from Accumulated Other Comprehensive Income        
Amount Reclassified from Accumulated Other Comprehensive Income        
Total before tax $ 25 $ 25 $ 80 $ 73