Rationalization Charges - Activity in Rationalization Plan Reserves (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Restructuring Reserve [Roll Forward]
Balance at December 31, 2019			$ 43,713
Charged to expense	$ 2,505	$ 3,195	7,247	$ 48,594
Utilized and currency translation			(8,765)
Balance at September 30, 2020	42,195		42,195
Employee Severance and Benefits
Restructuring Reserve [Roll Forward]
Balance at December 31, 2019			42,815
Charged to expense			4,138
Utilized and currency translation			(5,410)
Balance at September 30, 2020	41,543		41,543
Plant Exit Costs
Restructuring Reserve [Roll Forward]
Balance at December 31, 2019			898
Charged to expense			2,005
Utilized and currency translation			(2,251)
Balance at September 30, 2020	652		652
Non-Cash Asset Write-Down
Restructuring Reserve [Roll Forward]
Balance at December 31, 2019			0
Charged to expense			1,104
Utilized and currency translation			(1,104)
Balance at September 30, 2020	$ 0		$ 0