Employee Benefit Plans (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Noncurrent liabilities	$ 231,335	$ 189,954
Liabilities of assets held-for-sale	$ 0	$ 12,152
Pension Plan
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rates	2.40%	3.20%	2.80%
Expected long-term rates of return on plan assets	5.60%	5.90%	6.00%
Expected long-term rates of return on plan assets for next year (as a percent)	5.10%
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Discount rates	1.60%	2.40%
U.S. Plans | Pension Plan
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation at beginning of year	$ 294,693	$ 286,027
Service cost	0	39	$ 42
Interest cost	7,381	10,551	9,562
Plan participants' contributions	0	0
Amendments	0	0
Actuarial loss	25,212	20,064
Settlements/curtailments	0	0
Benefits paid	(17,675)	(15,842)
Effect of foreign currency	0	0
Change in benefit obligation, Acquisition	(12,951)	(6,146)
Benefit obligation at end of year	296,660	294,693	286,027
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year	226,268	205,388
Actual return on plan assets	24,975	37,665
Employer contributions	3,528	8,306
Plan participants' contributions	0	0
Settlements/curtailments	0	0
Benefits paid	(17,675)	(15,842)
Effect of foreign currency	0	0
Acquisitions/divestitures	(10,971)	(9,249)
Fair value of plan assets at end of year	226,125	226,268	$ 205,388
Funded status at end of year	(70,535)	(68,425)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Noncurrent assets	0	0
Current liabilities	1,970	1,980
Noncurrent liabilities	68,565	64,465
Liabilities of assets held-for-sale	0	1,980
Total accumulated other comprehensive loss before tax	135,281	133,806
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Net actuarial loss	135,281	133,806
Prior service cost	0	0
Total accumulated other comprehensive loss before tax	135,281	$ 133,806
Pension and Other Postretirement Benefit Plans, Amounts that Will be Amortized from Accumulated Other Comprehensive Income (Loss) in Next Fiscal Year [Abstract]
Estimate of expected contributions in next fiscal year	4,400
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2021	25,600
2022	17,100
2023	17,000
2024	16,800
2025	16,700
2026-2030	$ 80,600
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rates	3.20%	4.20%	3.50%
Expected long-term rates of return on plan assets	7.00%	7.30%	7.30%
Expected long-term rates of return on plan assets for next year (as a percent)	6.80%
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Discount rates	2.40%	3.20%
Highest yield U.S. dollar-denominated, AA-graded corporate bonds excluded from yield curve universe (as a percent)	10.00%
Lowest yield U.S. dollar-denominated, AA-graded corporate bonds excluded from yield curve universe (as a percent)	10.00%
International Plans | Pension Plan
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation at beginning of year	$ 988,288	$ 874,679
Service cost	1,838	1,447	$ 1,669
Interest cost	17,720	22,280	21,589
Plan participants' contributions	35	36
Amendments	1,088	1,254
Actuarial loss	129,495	93,330
Settlements/curtailments	(256)	(343)
Benefits paid	(45,293)	(37,396)
Effect of foreign currency	29,526	33,010
Change in benefit obligation, Acquisition	(41)	9
Benefit obligation at end of year	1,122,400	988,288	874,679
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year	864,636	744,538
Actual return on plan assets	95,219	108,235
Employer contributions	21,962	21,121
Plan participants' contributions	35	36
Settlements/curtailments	(256)	(343)
Benefits paid	(44,869)	(37,217)
Effect of foreign currency	23,831	28,275
Acquisitions/divestitures	0	(9)
Fair value of plan assets at end of year	960,558	864,636	$ 744,538
Funded status at end of year	(161,842)	(123,652)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Noncurrent assets	533	987
Current liabilities	907	697
Noncurrent liabilities	161,468	123,942
Liabilities of assets held-for-sale	0	0
Total accumulated other comprehensive loss before tax	487,697	415,781
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Net actuarial loss	477,253	408,709
Prior service cost	10,444	7,072
Total accumulated other comprehensive loss before tax	487,697	$ 415,781
Pension and Other Postretirement Benefit Plans, Amounts that Will be Amortized from Accumulated Other Comprehensive Income (Loss) in Next Fiscal Year [Abstract]
Estimate of expected contributions in next fiscal year	25,200
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2021	45,100
2022	46,000
2023	47,400
2024	48,300
2025	49,800
2026-2030	$ 264,200
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rates	2.10%	2.90%	2.60%
Expected long-term rates of return on plan assets	5.20%	5.50%	5.60%
Expected long-term rates of return on plan assets for next year (as a percent)	4.70%
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Discount rates	1.40%	2.10%