Business Combinations - Consideration Paid and Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Summary of the aggregate consideration paid and the aggregate amounts of the assets acquired and liabilities assumed
Accounts receivable	$ 3.9
Inventory	45.2	$ 46.8
Other current assets	0.1	0.2
Property and equipment	0.6	4.4
Indefinite-lived intangibles	24.8	38.8
Current liabilities	(9.2)	(1.2)
Total consideration	65.4	89.0
Seller financed/assumed debt		(2.6)
Total cash used in acquisitions	$ 65.4	$ 86.4