Other Intangible Assets, net - Summary of Intangible Assets, Net (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
Finite Lived Intangible Assets [Line Items]
Weighted Average Life (Years)	11 years 1 month 6 days
Acquired Intangible Assets, Gross	$ 196.6	$ 200.3
Accumulated Amortization	(55.9)	(48.1)
Acquired Intangible Assets, Net	$ 140.7	152.2
Covenant Not to Compete
Finite Lived Intangible Assets [Line Items]
Weighted Average Life (Years)	2 years 6 months
Acquired Intangible Assets, Gross	$ 2.9	2.9
Accumulated Amortization	(0.8)	(0.3)
Acquired Intangible Assets, Net	$ 2.1	2.6
Trade Names and Trademarks
Finite Lived Intangible Assets [Line Items]
Weighted Average Life (Years)	3 years 4 months 24 days
Acquired Intangible Assets, Gross	$ 5.6	5.6
Accumulated Amortization	(1.8)	(1.2)
Acquired Intangible Assets, Net	$ 3.8	4.4
Proprietary Know How
Finite Lived Intangible Assets [Line Items]
Weighted Average Life (Years)	4 years 2 months 12 days
Acquired Intangible Assets, Gross	$ 6.7	10.4
Accumulated Amortization	(2.8)	(2.0)
Acquired Intangible Assets, Net	$ 3.9	8.4
Management Contract Rights
Finite Lived Intangible Assets [Line Items]
Weighted Average Life (Years)	8 years 7 months 6 days
Acquired Intangible Assets, Gross	$ 81.0	81.0
Accumulated Amortization	(40.0)	(37.4)
Acquired Intangible Assets, Net	$ 41.0	43.6
Customer Relationships
Finite Lived Intangible Assets [Line Items]
Weighted Average Life (Years)	13 years 4 months 24 days
Acquired Intangible Assets, Gross	$ 100.4	100.4
Accumulated Amortization	(10.5)	(7.2)
Acquired Intangible Assets, Net	$ 89.9	$ 93.2