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	$ 204,925	$ 271,236	$ 377,440	$ 435,336
Other comprehensive (loss) income, net of tax:
Foreign currency translation adjustments	(25,431)	4,639	(32,229)	5,316
Interest rate swaps – net change in deferred gain or loss	3,869	5,457	9,239	10,727
Pension plans – net change in deferred actuarial loss	(143)	104	(95)	207
Other comprehensive (loss) income, net of tax	(21,705)	10,200	(23,085)	16,250
Comprehensive income	$ 183,220	$ 281,436	$ 354,355	$ 451,586