Acquisitions and Divestitures - Schedule of Net Operating Revenues and Loss and Assets and Liabilities Classified as Discontinued Operations) (Details) - Hospitals Included in Continuing Operations [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups
(Loss) income before income taxes	$ (36)	$ 83	$ (61)
Less: Loss attributable to noncontrolling interests		(6)	(8)
(Loss) income from operations before income taxes attributable to Community Health Systems, Inc. stockholders	$ (36)	$ 89	$ (53)