Other Intangible Assets, net (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Intangible assets, net
Weighted Average Life (Years)	11 years 3 months 18 days
Acquired Intangible Assets, Gross	$ 200.3		$ 200.3
Accumulated Amortization	(52.0)		(48.1)
Acquired Intangible Assets, Net	148.3		152.2
Amortization expense	$ 3.9	$ 3.8
Minimum
Intangible assets, net
Weighted Average Life (Years)	1 year
Maximum
Intangible assets, net
Weighted Average Life (Years)	14 years
Covenant not to compete
Intangible assets, net
Weighted Average Life (Years)	2 years 8 months 12 days
Acquired Intangible Assets, Gross	$ 2.9		2.9
Accumulated Amortization	(0.6)		(0.3)
Acquired Intangible Assets, Net	$ 2.3		2.6
Trade names and trademarks
Intangible assets, net
Weighted Average Life (Years)	3 years 8 months 12 days
Acquired Intangible Assets, Gross	$ 5.6		5.6
Accumulated Amortization	(1.5)		(1.2)
Acquired Intangible Assets, Net	$ 4.1		4.4
Proprietary know how
Intangible assets, net
Weighted Average Life (Years)	4 years 4 months 24 days
Acquired Intangible Assets, Gross	$ 10.4		10.4
Accumulated Amortization	(2.4)		(2.0)
Acquired Intangible Assets, Net	$ 8.0		8.4
Management contract rights
Intangible assets, net
Weighted Average Life (Years)	8 years 9 months 18 days
Acquired Intangible Assets, Gross	$ 81.0		81.0
Accumulated Amortization	(38.7)		(37.4)
Acquired Intangible Assets, Net	$ 42.3		43.6
Customer relationships
Intangible assets, net
Weighted Average Life (Years)	13 years 7 months 6 days
Acquired Intangible Assets, Gross	$ 100.4		100.4
Accumulated Amortization	(8.8)		(7.2)
Acquired Intangible Assets, Net	$ 91.6		$ 93.2