Rationalization Charges Rationalization Charges by Business Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Restructuring Cost and Reserve [Line Items]
Rationalization charges	$ 2,799	$ 6,083
Metal Containers [Member]
Restructuring Cost and Reserve [Line Items]
Rationalization charges	1,963	222
Closures [Member]
Restructuring Cost and Reserve [Line Items]
Rationalization charges	742	5,660
Plastic Containers [Member]
Restructuring Cost and Reserve [Line Items]
Rationalization charges	$ 94	$ 201