Operating Results of Segments and Reconciliation to Earnings (Loss) Before Income taxes (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Revenues	$ 300.5	$ 338.6	$ 368.7	$ 137.8	$ 2.0			$ 0.1	$ 1,145.6	$ 2.1	$ 5.3
Adjusted EBITDA									70.3
Unrealized losses on derivative financial instruments									0.8
Depreciation and amortization									32.5	0.1
Amortization of purchase accounting adjustments									9.2
Operating loss—excludes share-based compensation expense									12.6
Share-based compensation expense included in Corporate and Other									1.3	1.0	2.0
Other									3.7
Operating profit (loss)	$ 2.8	$ 7.4	$ 2.8	$ (2.8)	$ (1.9)	$ (3.8)	$ (0.2)	$ (2.5)	10.2	$ (8.4)	$ (7.7)
RANA
Segment Reporting Information [Line Items]
Revenues									711.4
Adjusted EBITDA									49.0
RAEU
Segment Reporting Information [Line Items]
Revenues									434.2
Adjusted EBITDA									$ 21.3