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Comprehensive Income (Tables)
6 Months Ended
Jun. 30, 2011
Stockholders' Equity & Comprehensive Income [Abstract]  
Components of comprehensive income, net of related taxes
                                 
    Three Months Ended     Six Months Ended  
    June 30,     June 30,  
    2011     2010     2011     2010  
Net income
  $ 53,547     $ 86,342     $ 131,872     $ 171,338  
Net change in fair value of interest rate swaps
    (8,969 )     (33,694 )     27,477       (45,051 )
Net change in fair value of available-for-sale securities
    268       476       1,338       630  
Amortization and recognition of unrecognized pension cost components
    807       758       1,579       5,233  
 
                       
Comprehensive income
    45,653       53,882       162,266       132,150  
Less: Comprehensive income attributable to noncontrolling interests
    18,158       16,277       35,159       31,266  
 
                       
Comprehensive income attributable to Community Health Systems, Inc.
  $ 27,495     $ 37,605     $ 127,107     $ 100,884