Benefit Plans Amounts Recognized in Other Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, before Tax	$ 44,576
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax	(35,662)	$ (32,699)	$ (23,326)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), before Tax	112
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), after Tax	93
Defined Benefit Plans, Amortization of Gains, Losses and Other Expenses	(25,801)
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax	(20,370)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax	7,192
Other Comprehensive Income (Loss), Amortization, Pension and Other Postretirement Benefit Plans, Net Prior Service Cost Recognized in Net Periodic Benefit Cost, after tax	5,823
Defined Benefit Plans, Impact of FX on Current Year Change in OCI	24,891
Defined Benefit Plans, Impact of FX on Current Year Change in OCI, net of tax	(19,701)	$ (2,108)	$ 3,522
Defined Benefit Plan, Changes in OCI Arising During the Period	50,970
Defined Benefit Plan, Changes in OCI Arising During the Period, net of tax	40,909
Pension Plan [Member] | Foreign Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, before Tax	37,041
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), before Tax	112
Defined Benefit Plans, Amortization of Gains, Losses and Other Expenses	(23,251)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax	7,117
Defined Benefit Plans, Impact of FX on Current Year Change in OCI	24,891
Defined Benefit Plan, Changes in OCI Arising During the Period	45,910
Pension Plan [Member] | UNITED STATES
Defined Benefit Plan Disclosure [Line Items]
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, before Tax	7,605
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), before Tax	0
Defined Benefit Plans, Amortization of Gains, Losses and Other Expenses	(2,578)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax	0
Defined Benefit Plans, Impact of FX on Current Year Change in OCI	0
Defined Benefit Plan, Changes in OCI Arising During the Period	5,027
Other Postretirement Benefits Plan [Member] | UNITED STATES
Defined Benefit Plan Disclosure [Line Items]
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, before Tax	(70)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), before Tax	0
Defined Benefit Plans, Amortization of Gains, Losses and Other Expenses	28
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax	75
Defined Benefit Plans, Impact of FX on Current Year Change in OCI	0
Defined Benefit Plan, Changes in OCI Arising During the Period	$ 33