Stockholders' Deficit (Schedule of Impact of Noncontrolling Interest to Stockholders' Deficit) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Stockholders' Deficit [Abstract]
Net loss attributable to Community Health Systems, Inc. stockholders	$ (167)	$ (110)	$ (285)	$ (135)
Net decrease in Community Health Systems, Inc. paid-in-capital for purchase of subsidiary partnership interests	(1)	(1)	(1)	(3)
Net transfers to the noncontrolling interests	(1)	(1)	(1)	(3)
Change to Community Health Systems, Inc. stockholders' deficit from net loss attributable to Community Health Systems, Inc. stockholders and transfers to noncontrolling interests	$ (168)	$ (111)	$ (286)	$ (138)