ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	$ 2,449,799
Other comprehensive income (loss), net of tax	18,938	$ (15,032)
Ending Balance	2,559,147		$ 2,449,799
Foreign currency translation adjustments, net
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	(167,193)	(123,288)	(123,288)
Other comprehensive income (loss) before reclassifications	19,084		(43,905)
Amounts reclassified from accumulated other comprehensive loss	0		0
Other comprehensive income (loss), net of tax	19,084		(43,905)
Ending Balance	(148,109)		(167,193)
Total pension and postretirement adjustments, net
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	(76,032)	(89,935)	(89,935)
Other comprehensive income (loss) before reclassifications	(331)		13,898
Amounts reclassified from accumulated other comprehensive loss	185		5
Other comprehensive income (loss), net of tax	(146)		13,903
Ending Balance	(76,178)		(76,032)
Accumulated other comprehensive income (loss)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	(243,225)	(213,223)	(213,223)
Other comprehensive income (loss) before reclassifications	18,753		(30,007)
Amounts reclassified from accumulated other comprehensive loss	185		5
Other comprehensive income (loss), net of tax	18,938	(15,032)	(30,002)
Ending Balance	$ (224,287)	$ (228,255)	$ (243,225)