Business Combinations - Consideration Paid and Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Summary of the aggregate consideration paid and the aggregate amounts of the assets acquired and liabilities assumed
Accounts receivable	$ 3.6	$ 11.1
Inventories	101.1	139.9
Other current assets	0.2	2.9
Property and equipment	55.4	21.8
Indefinite-lived intangibles	173.9	365.6
Other noncurrent assets		0.1
Current liabilities	(17.7)	(33.6)
Noncurrent liabilities	(0.6)	(1.9)
Total consideration	315.9	505.9
Deferred consideration	(6.8)
Consideration transferred through common stock issuance		(32.4)
Contingent consideration		(20.0)
Seller financed/assumed debt		(3.8)
Total cash used in acquisitions	$ 309.1	$ 449.7