Other Intangible Assets, Net - Summary of Other Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life (Years)	11 years 6 months
Acquired Intangible Assets, Gross	$ 126.4	$ 126.4
Accumulated Amortization	(65.1)	(50.5)
Acquired Intangible Assets, Net	$ 61.3	75.9
Covenant not to compete
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life (Years)	2 years
Acquired Intangible Assets, Gross	$ 0.9	0.9
Accumulated Amortization	(0.9)	(0.9)
Acquired Intangible Assets, Net	$ 0.0	0.0
Trade names and trademarks
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life (Years)	2 years 6 months
Acquired Intangible Assets, Gross	$ 9.8	9.8
Accumulated Amortization	(9.6)	(7.8)
Acquired Intangible Assets, Net	$ 0.2	2.0
Proprietary know how
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life (Years)	4 months 24 days
Acquired Intangible Assets, Gross	$ 34.7	34.7
Accumulated Amortization	(32.6)	(25.0)
Acquired Intangible Assets, Net	$ 2.1	9.7
Management contract rights
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life (Years)	11 years 10 months 24 days
Acquired Intangible Assets, Gross	$ 81.0	81.0
Accumulated Amortization	(22.0)	(16.8)
Acquired Intangible Assets, Net	$ 59.0	$ 64.2
Minimum
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life (Years)	1 year
Maximum
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life (Years)	15 years