Rationalization Charges Rationalization Charges by Business Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Restructuring Cost and Reserve [Line Items]
Rationalization charges	$ 39,317	$ 492	$ 45,400	$ 1,195
Metal Containers [Member]
Restructuring Cost and Reserve [Line Items]
Rationalization charges	39,023	258	39,245	740
Closures [Member]
Restructuring Cost and Reserve [Line Items]
Rationalization charges	248	0	5,908	39
Plastic Containers [Member]
Restructuring Cost and Reserve [Line Items]
Rationalization charges	$ 46	$ 234	$ 247	$ 416