Segment Information (Details 2) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Segment Reporting [Abstract]
Adjusted EBITDA	$ 167.6	$ 48.2	$ 298.1	$ 94.1
Interest expense	(52.5)	(7.9)	(93.0)	(15.7)
Depreciation and amortization expense	(66.1)	(21.4)	(114.3)	(38.3)
Restructuring and related expenses	(12.1)	(0.4)	(13.7)	(0.4)
Manufacturer's profit in inventory adjustment	(20.7)	0.0	(56.7)	(12.0)
Acquisition transaction costs	(24.1)	(10.5)	(55.4)	(10.5)
Non-cash fair value adjustment to contingent consideration	(0.9)	(10.8)	(3.6)	(23.8)
Legal settlement	16.0	0.0	16.0	0.0
Acquisition put option expiration	0.0	0.0	3.0	0.0
Foreign exchange gains on foreign denominated external and internal debt	(17.9)	0.0	6.1	0.0
Other income	1.4	0.2	2.6	0.2
Loss before income taxes and non-controlling interest	(9.3)	(2.6)	(10.9)	(6.4)
Income tax benefit (expense)	0.2	4.1	(24.5)	1.9
Net income attributable to the non-controlling interests	3.1	1.9	3.5	3.3
Net loss attributable to stockholders	$ (12.2)	$ (0.4)	$ (38.9)	$ (7.8)