SEGMENT INFORMATION (Reconciliation of Segment Operating Profit to Consolidated Income Before Provision for Income Taxes) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total segment operating profit:	$ 176,979	$ 114,028	$ 408,072	$ 378,745
Stock-based compensation expense	(42,124)	(37,847)	(122,599)	(109,536)
Loss on sale of business	0	(25,922)	0	(25,922)
Interest and other income, net	13,347	13,931	40,425	37,162
Foreign exchange (loss)/gain	(710)	3,893	(1,416)	(6,725)
Income before provision for income taxes	189,616	131,852	447,081	409,182
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total segment operating profit:	250,432	196,394	608,991	569,842
Unallocated Amounts
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Stock-based compensation expense	(42,124)	(37,847)	(122,599)	(109,536)
Amortization of intangibles assets	(5,707)	(5,688)	(17,477)	(16,708)
Other acquisition-related expenses	(7,098)	(867)	(8,777)	(2,448)
Loss on sale of business	0	(25,922)	0	(25,922)
Other unallocated expenses	$ (18,524)	$ (12,042)	$ (52,066)	$ (36,483)