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Stockholders Equity (Schedule of Impact of Noncontrolling Interest to Stockholders' Equity) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Stockholders' Equity [Abstract]    
Net loss attributable to Community Health Systems, Inc. stockholders $ (98) $ 96
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 $ (99)