Stockholders' Deficit - Schedule of Impact of Noncontrolling Interest to Stockholders' Deficit (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Equity [Abstract]
Net loss attributable to Community Health Systems, Inc. stockholders	$ (91)	$ (42)	$ (180)	$ (369)
Net increase (decrease) in Community Health Systems, Inc. paid-in-capital for purchase of subsidiary partnership interests		(1)		(2)
Net transfers to the noncontrolling interests		(1)		(2)
Change to Community Health Systems, Inc. stockholders' deficit from net loss attributable to Community Health Systems, Inc. stockholders and transfers to noncontrolling interests	$ (91)	$ (43)	$ (175)	$ (371)