Stockholders' Deficit - Schedule of Impact of Noncontrolling Interest to Stockholders' Deficit (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Equity [Abstract]
Net (loss) income attributable to Community Health Systems, Inc. stockholders	$ (42)	$ 111	$ (369)	$ 52
Net (decrease) increase in Community Health Systems, Inc. paid-in-capital for purchase of subsidiary partnership interests	(1)	9	(2)	9
Net transfers to the noncontrolling interests	(1)	9	(2)	9
Change to Community Health Systems, Inc. stockholders' deficit from net (loss) income attributable to Community Health Systems, Inc. stockholders and transfers to noncontrolling interests	$ (43)	$ 120	$ (371)	$ 61