ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance			$ 2,533,574
Other comprehensive income (loss) before reclassifications			(15,479)		$ 72,205
Amounts reclassified from accumulated other comprehensive loss			(678)		(2,792)
Other comprehensive income (loss), net of tax	$ 4,059	$ 56,170	(16,157)	$ 75,108	69,413
Ending Balance	2,769,860		2,769,860		2,533,574
Foreign currency translation adjustments, net
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance			(99,129)	(167,193)	(167,193)
Other comprehensive income (loss) before reclassifications			(16,982)		68,064
Amounts reclassified from accumulated other comprehensive loss			0		0
Other comprehensive income (loss), net of tax			(16,982)		68,064
Ending Balance	(116,111)		(116,111)		(99,129)
Total pension and postretirement adjustments, net
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance			(74,683)	(76,032)	(76,032)
Other comprehensive income (loss) before reclassifications			1,503		4,141
Amounts reclassified from accumulated other comprehensive loss			(678)		(2,792)
Other comprehensive income (loss), net of tax			825		1,349
Ending Balance	(73,858)		(73,858)		(74,683)
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	(194,028)	(224,287)	(173,812)	(243,225)	(243,225)
Other comprehensive income (loss), net of tax	4,059	56,170	(16,157)	75,108
Ending Balance	$ (189,969)	$ (168,117)	$ (189,969)	$ (168,117)	$ (173,812)