ACCUMULATED OTHER COMPREHENSIVE INCOME/(LOSS) - Reclassifications out of Accumulated Other Comprehensive Income/(Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Amount Reclassified from Accumulated Other Comprehensive Income
Income before Income Taxes	$ (469,765)	$ (374,825)	$ (334,704)
Tax benefit	95,587	90,649	95,149
Miscellaneous income (expense), net	(3,265)	(3,212)	4,799
Net Income	(374,178)	(284,176)	(239,555)
Amount Reclassified from Accumulated Other Comprehensive Income
Amount Reclassified from Accumulated Other Comprehensive Income
Net Income	370	771	6,432
Defined Benefit Pension Plans | Amount Reclassified from Accumulated Other Comprehensive Income
Amount Reclassified from Accumulated Other Comprehensive Income
Amortization of net loss	201	914	8,358
Amortization of prior service cost	349	177	177
Income before Income Taxes	550	1,091	8,535
Tax benefit	(180)	(320)	(2,149)
Net Income	370	771	6,386
Derivatives | Amount Reclassified from Accumulated Other Comprehensive Income
Amount Reclassified from Accumulated Other Comprehensive Income
Net Income	0	0	46
Derivatives | Changes in cross currency swap: interest component | Amount Reclassified from Accumulated Other Comprehensive Income
Amount Reclassified from Accumulated Other Comprehensive Income
Interest expense	0	0	(171)
Derivatives | Changes in cross currency swap: foreign exchange component | Amount Reclassified from Accumulated Other Comprehensive Income
Amount Reclassified from Accumulated Other Comprehensive Income
Miscellaneous income (expense), net	$ 0	$ 0	$ 217