Rationalization Charges - Rationalization Charges by Business Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Restructuring Cost and Reserve [Line Items]
Rationalization charges	$ 1,942	$ 39,317	$ 4,741	$ 45,400
Metal Containers [Member]
Restructuring Cost and Reserve [Line Items]
Rationalization charges	1,153	39,023	3,116	39,245
Closures [Member]
Restructuring Cost and Reserve [Line Items]
Rationalization charges	700	248	1,442	5,908
Plastic Containers [Member]
Restructuring Cost and Reserve [Line Items]
Rationalization charges	$ 89	$ 46	$ 183	$ 247