Business Combinations - Consideration Paid and Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Summary of the aggregate consideration paid and the aggregate amounts of the assets acquired and liabilities assumed
Accounts receivable		$ 3.6
Inventories	$ 0.5	56.6
Property and equipment	0.2	52.6
Indefinite-lived intangibles	0.4	69.5
Other noncurrent assets	0.1	0.1
Current liabilities	(0.1)	(13.2)
Noncurrent liabilities		(0.7)
Total consideration	1.1	168.5
Deferred consideration		(12.0)
Total cash used in acquisitions	$ 1.1	$ 156.5