Rationalization Charges - Narrative (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	$ 42,295	$ 43,713
Other Restructuring [Member] | Rationalization Plan [Member]
Restructuring Cost and Reserve [Line Items]
Remaining expenses	1,900
Remaining cash expenditure	3,400
Annually over the next twenty years [Member] | Central States Pension Plan withdrawal [Member]
Restructuring Cost and Reserve [Line Items]
Remaining cash expenditure	3,100
Remaining interest accretion expense	1,100
Accrued Liabilities
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	4,500
Other Liabilities
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	$ 37,800