Stockholders' Deficit - Schedule of Impact of Noncontrolling Interest to Stockholders' Deficit (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Equity [Abstract]
Net (loss) income attributable to Community Health Systems, Inc. stockholders	$ (326)	$ 6	$ (327)	$ (58)
Net (decrease) increase in Community Health Systems, Inc. paid-in-capital for purchase of subsidiary partnership interests			(1)	0
Net transfers to the noncontrolling interests			(1)
Change to Community Health Systems, Inc. stockholders' deficit from net (loss) income attributable to Community Health Systems, Inc. stockholders and transfers to noncontrolling interests	$ (326)	$ 6	$ (328)	$ (58)