Business Combinations - Consideration Paid and Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Summary of the aggregate consideration paid and the aggregate amounts of the assets acquired and liabilities assumed
Inventory	$ 0.1	$ 46.8
Other current assets		0.2
Property and equipment	0.1	4.4
Indefinite-lived intangibles	4.6	38.8
Current liabilities	(4.4)	(1.2)
Total consideration	0.4	89.0
Seller financed/assumed debt		(2.6)
Total cash used in acquisitions	$ 0.4	$ 86.4