Stockholders' Equity (Schedule of Impact of Noncontrolling Interest to Stockholders' Equity) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Stockholders' Equity [Abstract]
Net loss attributable to Community Health Systems, Inc. stockholders	$ 62	$ 4	$ (8)	$ 113
Net decrease in Community Health Systems, Inc. paid-in capital for purchase of subsidiary partnership interests			(1)
Net transfers to the noncontrolling interests			(1)
Change to Community Health Systems, Inc. stockholders' equity from net loss attributable to Community Health Systems, Inc. stockholders and transfers to noncontrolling interests			$ (9)