Business Combinations - Consideration Paid and Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Summary of the aggregate consideration paid and the aggregate amounts of the assets acquired and liabilities assumed
Accounts receivable		$ 3.6
Inventories	$ 150.7	62.8
Other current assets	0.6
Property and equipment	2.6	52.6
Indefinite-lived intangibles	214.0	73.9
Current liabilities	(16.8)	(16.9)
Noncurrent liabilities	(13.6)	(0.6)
Total consideration	337.5	175.4
Deferred consideration		(6.8)
Contingent consideration	(10.6)
Total cash used in acquisitions	$ 326.9	$ 168.6