Commitments and Contingencies - Additional Information (Detail) (USD $)						3 Months Ended	12 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014 Letters of Credit and Surety Bonds	Jun. 30, 2014 Self Insurance Programs Letters of Credit and Surety Bonds	Jun. 30, 2014 Other Debt Guarantees Letters of Credit and Surety Bonds	Jun. 30, 2013 Professional And General Liability	Dec. 31, 2012 Professional And General Liability	Dec. 31, 2011 Professional And General Liability	Jun. 30, 2014 Location 2	Jun. 30, 2014 Location 1	Jun. 30, 2014 Illinois	Dec. 31, 2013 Illinois	Jun. 30, 2014 Other Current Liabilities	Jun. 30, 2014 Other Current Assets [Member]	Jun. 30, 2014 Wind Storms Minimum	Jun. 30, 2014 Wind Storms Maximum	Jun. 30, 2014 Earthquake	Jun. 30, 2014 Earthquake Maximum	Jun. 30, 2014 Earthquake UNITED STATES Minimum	Jun. 30, 2014 Earthquake UNITED STATES Maximum	Jun. 30, 2014 Earthquake PUERTO RICO	Jun. 30, 2014 Flood Location 2	Jun. 30, 2014 Flood Location 1	Nov. 30, 2010 Subsidiaries Professional Liability Maximum	Nov. 30, 2010 Subsidiaries General Liability Maximum	Jun. 30, 2014 Subsidiaries General and Professional Liability Insurance Policies	Jun. 30, 2014 Subsidiaries General and Professional Liability Insurance Policies Minimum	Jun. 30, 2014 Subsidiaries General and Professional Liability Insurance Policies Maximum	Jun. 30, 2014 Psychiatric Solutions Inc General and Professional Liability Insurance Policies Maximum	Oct. 30, 2012 Behavioral Health Facilities Acquired from Ascend Health Corporation General and Professional Liability Insurance Policies	Oct. 30, 2012 Behavioral Health Facilities Acquired from Ascend Health Corporation General and Professional Liability Insurance Policies Maximum
Commitments and Contingencies Disclosure [Line Items]
Self-insured for professional and general liability	$ 204,000,000	$ 206,000,000																						$ 10,000,000	$ 3,000,000				$ 3,000,000		$ 20,000,000
Purchased several excess policies through commercial insurance carriers per occurrence																												250,000,000			250,000,000
Percentage of liability for claims paid under commercially insured coverage																										10.00%
Liability for claims paid under commercially insured coverage																											10,000,000	60,000,000
Minimum Insurance Deductible									250,000	50,000							250,000													25,000
Reduction in professional and general liability self-insurance reserves relating to prior years						65,000,000
Weighting given to company-specific metrics							100.00%	75.00%
General industry metrics							0.00%	25.00%
Self-insured for professional and general liability, current	44,000,000	44,000,000
Compensation liability claims	64,000,000	64,000,000
Compensation and related benefits	34,000,000	34,000,000
Commercial property insurance policies covering catastrophic losses																1,000,000,000		250,000,000		100,000,000	25,000,000
Percentage of insurance deductible															3.00%	5.00%			1.00%	5.00%
Maximum insurance deductible																					25,000	250,000	500,000
Accounts receivable, net	1,186,012,000	1,116,961,000									28,000,000	49,000,000
Accounts receivable net greater than sixty days Past due											5,000,000	28,000,000
Accounts receivable											32,000,000	46,000,000
Off-balance sheet contingent obligation			94,000,000	73,000,000	21,000,000
Estimated reserve													25,000,000
Commercial insurance recoveries														$ 20,000,000