Other Intangible Assets, net - Components of Intangible Assets, Net (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Finite Lived Intangible Assets [Line Items]
Weighted Average Life (Years)	7 years 7 months 6 days
Intangible Assets, Gross	$ 108.8	$ 110.1
Accumulated Amortization	(57.2)	(55.7)
Intangible Assets, Net	$ 51.6	54.4
Covenant Not to Compete
Finite Lived Intangible Assets [Line Items]
Weighted Average Life (Years)	1 year 8 months 12 days
Intangible Assets, Gross	$ 1.6	2.9
Accumulated Amortization	(1.1)	(2.3)
Intangible Assets, Net	$ 0.5	0.6
Trade Names and Trademarks
Finite Lived Intangible Assets [Line Items]
Weighted Average Life (Years)	1 year 8 months 12 days
Intangible Assets, Gross	$ 0.9	0.9
Accumulated Amortization	(0.5)	(0.5)
Intangible Assets, Net	$ 0.4	0.4
Proprietary Know How
Finite Lived Intangible Assets [Line Items]
Weighted Average Life (Years)	2 years 8 months 12 days
Intangible Assets, Gross	$ 3.8	3.8
Accumulated Amortization	(1.5)	(1.3)
Intangible Assets, Net	$ 2.3	2.5
Management Contract Rights
Finite Lived Intangible Assets [Line Items]
Weighted Average Life (Years)	7 years
Intangible Assets, Gross	$ 81.0	81.0
Accumulated Amortization	(49.0)	(47.7)
Intangible Assets, Net	$ 32.0	33.3
Customer Relationships
Finite Lived Intangible Assets [Line Items]
Weighted Average Life (Years)	9 years 10 months 24 days
Intangible Assets, Gross	$ 21.5	21.5
Accumulated Amortization	(5.1)	(3.9)
Intangible Assets, Net	$ 16.4	$ 17.6