CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 481,652	$ 327,160	$ 261,057
Other comprehensive (loss)/income:
Change in foreign currency translation adjustments, net of tax	(24,579)	4,498	6,295
Change in unrealized (loss)/gain on hedging instruments, net of tax	(7,059)	2,350	3,845
Defined benefit pension plans - actuarial gain/(loss), net of tax	2,943	(986)	0
Other comprehensive (loss)/income	(28,695)	5,862	10,140
Comprehensive income	$ 452,957	$ 333,022	$ 271,197