Stockholders' Deficit - Schedule of Impact of Noncontrolling Interest to Stockholders' Deficit (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Equity [Abstract]
Net loss attributable to Community Health Systems, Inc. stockholders	$ (1)	$ (64)
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 attributable to Community Health Systems, Inc. stockholders and transfers to noncontrolling interests	$ (2)	$ (64)