ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance			$ 2,449,799
Other comprehensive income (loss) before reclassifications			58,443		$ (30,007)
Amounts reclassified from accumulated other comprehensive loss			(1,146)		5
Other comprehensive income (loss), net of tax	$ (17,811)	$ 30,060	57,297	$ 9,795	(30,002)
Ending Balance	2,529,481		2,529,481		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			61,869		(43,905)
Amounts reclassified from accumulated other comprehensive loss			0		0
Other comprehensive income (loss), net of tax			61,869		(43,905)
Ending Balance	(105,324)		(105,324)		(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			(3,426)		13,898
Amounts reclassified from accumulated other comprehensive loss			(1,146)		5
Other comprehensive income (loss), net of tax			(4,572)		13,903
Ending Balance	(80,604)		(80,604)		(76,032)
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	(168,117)	(233,488)	(243,225)	(213,223)	(213,223)
Other comprehensive income (loss), net of tax	(17,811)	30,060	57,297	9,795
Ending Balance	$ (185,928)	$ (203,428)	$ (185,928)	$ (203,428)	$ (243,225)