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Other Noncurrent Liabilities and Redeemable/Noncontrolling Interests - Additional Information (Detail) (USD $)
6 Months Ended
Jun. 30, 2014
Dec. 31, 2013
Jun. 30, 2014
Acute Care Hospital Services
Las Vegas, Nevada
Facility
Jun. 30, 2014
Acute Care Hospital Services
Washington, District of Columbia
Jun. 30, 2014
Acute Care Hospital Services
Laredo, Texas
Jun. 30, 2014
Behavioral Health Services
Philadelphia, Pennsylvania
Noncontrolling Interest [Line Items]            
Percentage of noncontrolling, minority ownership interests held by outside owners     28.00% 20.00% 11.00% 20.00%
Number of facilities     5      
Redeemable noncontrolling interests $ 232,000,000 $ 218,000,000        
Noncontrolling interest balance $ 53,174,000 $ 50,250,000