Rationalization Charges - Activity in Rationalization Plan Reserves (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Restructuring Reserve [Roll Forward]
Balance at December 31, 2020			$ 41,560
Charged to expense	$ 2,315	$ 2,505	13,026	$ 7,247
Utilized and currency translation			(11,445)
Balance at September 30, 2021	43,141		43,141
Employee Severance and Benefits
Restructuring Reserve [Roll Forward]
Balance at December 31, 2020			41,005
Charged to expense			7,262
Utilized and currency translation			(5,253)
Balance at September 30, 2021	43,014		43,014
Plant Exit Costs
Restructuring Reserve [Roll Forward]
Balance at December 31, 2020			555
Charged to expense			1,210
Utilized and currency translation			(1,638)
Balance at September 30, 2021	127		127
Non-Cash Asset Write-Down
Restructuring Reserve [Roll Forward]
Balance at December 31, 2020			0
Charged to expense			4,554
Utilized and currency translation			(4,554)
Balance at September 30, 2021	$ 0		$ 0