ACCUMULATED OTHER COMPREHENSIVE LOSS (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 3,001,532
Other comprehensive income/(loss)	17,361	$ (31,943)
Ending balance	3,128,964
Foreign currency translation
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(101,780)	(52,747)
Foreign currency translation	16,300	(36,115)
Income tax (expense)/ benefit	(3,073)	5,563
Other comprehensive income/(loss)	13,227	(30,552)
Ending balance	(88,553)	(83,299)
Cash flow hedging instruments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	8,306	(3,417)
Income tax (expense)/ benefit	(1,214)	408
Other comprehensive income/(loss)	4,134	(1,391)
Unrealized gain/ (loss) in fair value	7,895	(46,557)
Net (gain)/ loss reclassified into Cost of revenues (exclusive of depreciation and amortization)	(2,580)	904
Net loss reclassified into Foreign exchange loss	33	43,854
Ending balance	12,440	(4,808)
Defined benefit plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(1,847)	1,957
Ending balance	(1,847)	1,957
Accumulated other comprehensive loss
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Other comprehensive income/(loss)	17,361	(31,943)
Ending balance	$ (77,960)	$ (86,150)