INCOME TAXES - Effective Income Tax Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Income tax at statutory rate	$ 67,547	$ 63,243	$ 71,835
State income taxes (benefits), net of federal tax effect	1,616	2,396	2,622
Excess tax benefits from share-based compensation	(16,060)	(11,625)	(15,370)
Deferred tax charges (benefits), incl. tax rate changes	(1,040)	4,110	0
U.S. Global Intangible Low-Taxed Income ("GILTI") and Base Erosion Anti-Abuse Tax ("BEAT")	0	(3,909)	(1,485)
Valuation allowance	4,485	1,332	10,623
Rate differential on earnings of foreign operations	20,831	24,901	32,657
Other items, net	638	6,617	(1,040)
Actual income tax provision	$ 78,017	$ 87,065	$ 99,842
Effective income tax rate	24.30%	28.90%	29.20%