Other Comprehensive Income (Loss) - Components of Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss)	$ (27,863)	$ 48,306	$ (43,561)	$ 46,096
Cumulative translation adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive income (loss), Pre-tax	(28,703)	47,343	(56,887)	40,158
Total other comprehensive income (loss), Tax	0	0	0	0
Other comprehensive income (loss)	(28,703)	47,343	(56,887)	40,158
Pension and other postretirement adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive income (loss), Pre-tax	1,175	462	14,238	2,767
Total other comprehensive income (loss), Tax	(335)	(171)	(3,443)	(811)
Other comprehensive income (loss)	840	291	10,795	1,956
Reclassification adjustments for derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive income (loss), Pre-tax	0	869	3,275	5,153
Total other comprehensive income (loss), Tax	0	(197)	(744)	(1,171)
Other comprehensive income (loss)	0	672	2,531	3,982
AOCI
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive income (loss), Pre-tax	(27,528)	48,674	(39,374)	48,078
Total other comprehensive income (loss), Tax	(335)	(368)	(4,187)	(1,982)
Other comprehensive income (loss)	$ (27,863)	$ 48,306	$ (43,561)	$ 46,096