ACCUMULATED OTHER COMPREHENSIVE INCOME (Schedule of Reclassifications Out of Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2025	Mar. 31, 2025	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2025	Jun. 30, 2024
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Cost of revenue	$ 414,725		$ 384,419		$ 789,773	$ 755,444
Provision for income taxes	68,363		55,758		135,770	115,658
Interest expense	11,321		8,099		18,987	16,010
General and administrative expense	98,681		157,243		190,242	249,267
Net income	293,989	$ 242,677	203,298	$ 235,579	536,666	438,877
Reclassification Out of Accumulated Other Comprehensive Income | Investments
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Provision for income taxes	0		0		0	51
General and administrative expense	0		0		0	(214)
Net income	0		0		0	(163)
Reclassification Out of Accumulated Other Comprehensive Income | Defined benefit plans
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Cost of revenue	(155)		(63)		(293)	(176)
Provision for income taxes	24		10		46	29
Net income	(131)		(53)		(247)	(147)
Foreign currency exchange contracts | Reclassification Out of Accumulated Other Comprehensive Income | Cash flow hedges
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Cost of revenue	(1,180)		1,721		2,565	2,531
Provision for income taxes	286		(480)		(748)	(723)
Net income	(894)		1,241		1,817	1,808
Interest rate swap contracts | Reclassification Out of Accumulated Other Comprehensive Income | Cash flow hedges
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Provision for income taxes	(80)		(233)		(157)	(460)
Interest expense	337		979		661	1,936
Net income	$ 257		$ 746		$ 504	$ 1,476