GOODWILL AND OTHER INTANGIBLE ASSETS, NET - Goodwill and Intangibles (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Intangible Assets [Line Items]
Non-cash impairment charge for write-off of intangible assets	$ 4.2	$ 1.5
Amortization of Intangible Assets	16.6	6.8
Acquired Names [Member]
Intangible Assets [Line Items]
Non-cash impairment charge for write-off of intangible assets	4.2	1.5
Certificates of Need and Licenses [Member]
Intangible Assets [Line Items]
Non-cash impairment charge for write-off of intangible assets	0.0	0.0
Amortization of Intangible Assets	$ 2.4	$ 0.0