Acquisition - Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions	Dec. 31, 2018	Nov. 30, 2018	Dec. 31, 2017	Dec. 31, 2016
Business Acquisition [Line Items]
Goodwill	$ 585.5		$ 431.7	$ 431.4
Bags
Business Acquisition [Line Items]
Cash and cash equivalents		$ 5.9
Notes and accounts receivable		13.2
Prepaid expenses and other		2.0
Advances and deposits		0.2
Leasehold improvements, equipment and construction in progress, net		1.5
Other intangible assets, net		118.0
Goodwill		154.1
Accounts payable		(6.5)
Accrued expenses		(4.1)
Other long-term liabilities		(0.7)
Net assets acquired and liabilities assumed		$ 283.6