ACCUMULATED OTHER COMPREHENSIVE LOSS (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 2,487,117
Other comprehensive loss	(31,943)	$ (15,238)
Ending balance	2,552,103
Foreign currency translation
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(52,747)	(28,168)
Foreign currency translation	(36,115)	(13,581)
Income tax benefit	5,563	3,050
Other comprehensive loss	(30,552)	(10,531)
Ending balance	(83,299)	(38,699)
Cash flow hedging instruments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(3,417)	3,642
Unrealized loss in fair value	(46,557)	(7,346)
Net loss reclassified into Cost of revenues (exclusive of depreciation and amortization)	904	2,066
Net loss reclassified into Foreign exchange loss	43,854	0
Income tax benefit	408	1,199
Other comprehensive loss	(1,391)	(4,081)
Ending balance	(4,808)	(439)
Defined benefit plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	1,957	(986)
Income tax benefit	0	185
Other comprehensive loss	0	(626)
Ending balance	1,957	(1,612)
Actuarial losses
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Net loss reclassified into Cost of revenues (exclusive of depreciation and amortization)	0	(811)
Accumulated other comprehensive loss
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Ending balance	$ (86,150)	$ (40,750)