SEGMENT INFORMATION (Reconciliation of Segment Operating Profit to Consolidated Income Before Provision for Income Taxes) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total segment operating profit:	$ 129,242	$ 107,251
Stock-based compensation expense	(7,112)	(24,553)
Interest and other (loss)/income, net	(165)	5,374
Foreign exchange (loss)/gain	(22,785)	2,299
Income before provision for income taxes	106,292	114,924
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total segment operating profit:	163,961	146,155
Unallocated Amounts
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Stock-based compensation expense	(7,112)	(24,553)
Amortization of intangibles assets	(5,244)	(3,140)
Other acquisition-related expenses	(579)	(1,933)
Other unallocated expenses	$ (21,784)	$ (9,278)