INCOME TAXES (Components of Income Tax Expense (Benefit)) (Details) - USD ($) $ in Thousands	3 Months Ended				12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Income Tax Expense Benefit Net Resulting from Tax Reform Act	$ (4,424)	$ 2,323	$ 2,500	$ 28,616	$ 399	$ 28,616	$ 0
Deferred Income Tax Expense (Benefit) Net Resulting from Tax Reform Act					(329)	(14,532)
Current:
Federal					45,521	89,182	57,090
Non-U.S.					28,894	25,746	23,344
State and local					10,515	7,640	8,386
Current income tax expense (benefit)					84,930	122,568	88,820
Deferred:
Federal					(691)	(4,391)	(1,716)
Non-U.S.					(3,121)	(82)	(8,261)
State and local					549	666	172
Deferred income tax expense (benefit)					(3,263)	(3,807)	(9,805)
Total					81,667	118,761	$ 79,015
Transition Tax Expense Benefit Net Resulting from Tax Reform Act					$ 5,152	$ 36,387