ACCUMULATED OTHER COMPREHENSIVE LOSS (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period	$ 3,475,685	$ 3,130,442	$ 3,471,470	$ 3,003,010
Other comprehensive (loss)/income	(8,071)	5,875	(30,383)	23,236
Balance, end of period	3,397,959	3,263,340	3,397,959	3,263,340
Accumulated other comprehensive loss
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period	(61,352)	(77,960)	(39,040)	(95,321)
Balance, end of period	(69,423)	(72,085)	(69,423)	(72,085)
Foreign currency translation
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period	(62,313)	(88,553)	(43,601)	(101,780)
Unrealized (loss)/ gain in fair value	(7,790)	7,761	(31,291)	24,061
Income tax benefit/(expense)	2,141	(366)	6,930	(3,439)
Other comprehensive (loss)/income	(5,649)	7,395	(24,361)	20,622
Balance, end of period	(67,962)	(81,158)	(67,962)	(81,158)
Cash flow hedging instruments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period	4,037	12,440	7,819	8,306
Unrealized (loss)/ gain in fair value	(882)	7,938	(3,389)	15,833
Net gain reclassified into Cost of revenues (exclusive of depreciation and amortization)	(2,444)	(9,904)	(4,855)	(12,484)
Net loss reclassified into Foreign exchange loss	0	0	0	33
Income tax benefit/(expense)	768	446	1,904	(768)
Other comprehensive (loss)/income	(2,558)	(1,520)	(6,340)	2,614
Balance, end of period	1,479	10,920	1,479	10,920
Defined benefit plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period	(3,076)	(1,847)	(3,258)	(1,847)
Income tax benefit/(expense)	5	0	5	0
Other comprehensive (loss)/income	136	0	318	0
Actuarial gains	131	0	313	0
Balance, end of period	$ (2,940)	$ (1,847)	$ (2,940)	$ (1,847)