CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 18,604	$ 114,671	$ 108,323	$ 223,717
Other comprehensive income/(loss):
Change in foreign currency translation adjustments, net of tax	14,830	9,637	(15,722)	(894)
Change in unrealized (loss)/gain on hedging instruments, net of tax	(5,037)	2,040	(6,428)	(2,041)
Defined benefit pension plans - actuarial loss, net of tax	0	0	0	(626)
Other comprehensive income/(loss)	9,793	11,677	(22,150)	(3,561)
Comprehensive income	$ 28,397	$ 126,348	$ 86,173	$ 220,156