ACCUMULATED OTHER COMPREHENSIVE (LOSS) INCOME - Reclassifications From Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Amount Reclassified from Accumulated Other Comprehensive Income
Total before tax	$ (118,246)	$ (110,878)	$ (222,564)	$ (184,147)
Tax impact	27,788	27,831	49,173	46,514
Total reclassifications for the period	(90,458)	(83,047)	(173,391)	(137,633)
Amount Reclassified from Accumulated Other Comprehensive Income
Amount Reclassified from Accumulated Other Comprehensive Income
Total reclassifications for the period	201	195	404	387
Defined Benefit Pension Plans | Amount Reclassified from Accumulated Other Comprehensive Income
Amount Reclassified from Accumulated Other Comprehensive Income
Amortization of net loss	257	229	516	457
Amortization of prior service cost	26	45	54	88
Total before tax	283	274	570	545
Tax impact	(82)	(79)	(166)	(158)
Total reclassifications for the period	$ 201	$ 195	$ 404	$ 387