SUBSEQUENT EVENTS (Details) - USD ($)		1 Months Ended	12 Months Ended
	Apr. 24, 2020	Apr. 30, 2020	Dec. 31, 2020	Apr. 07, 2020	Mar. 31, 2020	Dec. 31, 2019
Subsequent event
Subsequent Event [Line Items]
Coronavirus Aid, Relief, and Economic Security Act, medicare accelerated payment program, proceeds received by our hospitals, ambulatory surgery centers, physician practices and other outpatient facilities		$ 1,500,000,000
Senior Notes | Senior secured first lien notes, maturing on April 1, 2025 | Subsequent event
Subsequent Event [Line Items]
Long term debt, face amount				$ 700,000,000
Stated interest rate, percentage				7.50%
Senior secured credit facility due 2024
Subsequent Event [Line Items]
Carrying amount					$ 500,000,000	$ 0
Revolving credit facility, maximum borrowing capacity (up to)					200,000,000	$ 180,000,000
Credit Agreement
Subsequent Event [Line Items]
Carrying amount					500,000,000
Revolving credit facility, maximum borrowing capacity (up to)					$ 1,500,000,000
Credit Agreement | Subsequent event
Subsequent Event [Line Items]
Revolving credit facility, maximum borrowing capacity (up to)	$ 1,900,000,000
Period in which certain debt covenants are increased	364 days
Scenario, Forecast | Subsequent event
Subsequent Event [Line Items]
Reduction of planned capital expenditures for 2020			40.00%