Rationalization Charges - Activity in Rationalization Plan Reserves (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Restructuring Reserve [Roll Forward]
Balance at December 31, 2019			$ 43,713
Charged to expense	$ 1,942	$ 39,317	4,741	$ 45,400
Utilized and currency translation			(6,159)
Balance at June 30, 2020	42,295		42,295
Employee Severance and Benefits [Member]
Restructuring Reserve [Roll Forward]
Balance at December 31, 2019			42,815
Charged to expense			2,715
Utilized and currency translation			(3,887)
Balance at June 30, 2020	41,643		41,643
Plant Exit Costs [Member]
Restructuring Reserve [Roll Forward]
Balance at December 31, 2019			898
Charged to expense			1,506
Utilized and currency translation			(1,752)
Balance at June 30, 2020	652		652
Non-Cash Asset Write-Down [Member]
Restructuring Reserve [Roll Forward]
Balance at December 31, 2019			0
Charged to expense			520
Utilized and currency translation			(520)
Balance at June 30, 2020	$ 0		$ 0