Stockholders' Deficit - Schedule of Impact of Noncontrolling Interest to Stockholders' Deficit (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Equity [Abstract]
Net loss attributable to Community Health Systems, Inc. stockholders	$ (38)	$ (326)	$ (89)	$ (327)
Net increase (decrease) in Community Health Systems, Inc. paid-in-capital for purchase of subsidiary partnership interests	5		5	(1)
Net transfers to the noncontrolling interests	5		5	(1)
Change to Community Health Systems, Inc. stockholders' deficit from net loss attributable to Community Health Systems, Inc. stockholders and transfers to noncontrolling interests	$ (33)	$ (326)	$ (84)	$ (328)