Goodwill and Intangible Assets - Goodwill (Parenthetical) (Details) - USD ($) $ in Millions		1 Months Ended	3 Months Ended	12 Months Ended
		Oct. 31, 2018	Jun. 30, 2019	Dec. 31, 2019		Dec. 31, 2018
Sacramento Container Corporation
Goodwill [Line Items]
Increase to goodwill, acquisition adjustment						$ 5.5
Englander
Goodwill [Line Items]
Increase to goodwill, acquisition adjustment			$ 1.4	$ 1.4
Acquisitions	[1]			1.4
Englander | Packaging
Goodwill [Line Items]
Acquisitions		$ 28.6		$ 1.4	[1]

[1] During 2019, the Company recorded a $1.4 million adjustment to increase the goodwill balance for the Company’s October 2018 acquisition of Englander.