Operating Results of Segments and Reconciliations to Earnings (Loss) Before Income taxes (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Segment Reporting Information [Line Items]
Revenues	$ 309.4	$ 137.8
Adjusted EBITDA	18.3	7.9
Unrealized gains (losses) on derivative financial instruments	(0.4)	0.1
Depreciation and amortization	(14.7)	(3.7)
Amortization of purchase accounting adjustments	(0.6)	(3.7)
Share-based compensation expense	(0.5)	(0.3)
Other	(1.4)	(0.3)
Operating loss	(2.1)	(2.8)
RANA
Segment Reporting Information [Line Items]
Revenues	200.8	86.4
Adjusted EBITDA	13.2	5.2
RAEU
Segment Reporting Information [Line Items]
Revenues	108.6	51.4
Adjusted EBITDA	5.1	2.7
Corporate and Other
Segment Reporting Information [Line Items]
Operating loss—excludes share-based compensation expense	(2.8)	(2.8)
Share-based compensation expense	$ (0.5)	$ (0.3)