Employee Benefit Plans (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Defined benefit plans:
Multiemployer pension plans	$ 442	$ 379	$ 882	$ 788
Defined contribution pension plans	3,120	1,897	6,533	5,066
Pension Plan | U.S. Plans
Defined benefit plans:
Service cost	0	0	0	0
Interest cost	1,203	1,845	2,406	3,690
Expected return on plan assets	(3,050)	(2,842)	(6,100)	(5,684)
Recognized prior service costs	0	0	0	0
Recognized loss	1,385	1,225	2,770	2,650
Defined benefit pension plans net periodic pension cost (benefit)	(462)	228	(924)	656
Defined benefit pension plan	451	460	3,317	2,487
Anticipated contributions to defined benefit pension plans during the remainder of the fiscal year	900		900
Pension Plan | International Plans
Defined benefit plans:
Service cost	500	426	993	855
Interest cost	3,242	4,235	6,435	8,630
Expected return on plan assets	(11,511)	(9,833)	(22,878)	(20,023)
Recognized prior service costs	129	106	256	213
Recognized loss	4,622	3,532	9,185	7,187
Defined benefit pension plans net periodic pension cost (benefit)	(3,018)	(1,534)	(6,009)	(3,138)
Defined benefit pension plan	4,301	$ 1,493	16,923	$ 11,553
Anticipated contributions to defined benefit pension plans during the remainder of the fiscal year	$ 8,600		$ 8,600