Rationalization Charges Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	$ 42,864	$ 43,713
Metal container plant closings [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	809	$ 898
Other Restructuring [Member] | Rationalization Plan [Member]
Restructuring Cost and Reserve [Line Items]
Remaining expenses for this rationalization plan	1,900
Remaining cash expenditure for this rationalization plan	3,600
Annually over the next twenty years [Member] | Other Restructuring [Member] | Rationalization Plan [Member]
Restructuring Cost and Reserve [Line Items]
Remaining cash expenditure for this rationalization plan	3,100
Annually over the next twenty years [Member] | Central States Pension Plan withdrawal [Member]
Restructuring Cost and Reserve [Line Items]
Remaining interest accretion expense for this rationalization plan	1,100
Accrued Liabilities
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	4,700
Other Liabilities
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	$ 38,200