Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Taxes [Line Items]
Favorable discrete tax items	$ 1,000,000	$ 1,000,000	$ 4,000,000
Unfavorable discrete tax items			4,000,000
Charge incurred from life insurance agreements			9,000,000
Deferred federal and state tax benefit	7,000,000	25,000,000
Future taxable income, amount	959,000,000
Deferred state tax benefit (net of the federal benefit)	(6,157,000)	5,800,000	1,704,000
Net operating losses	54,874,000	52,506,000
Valuation allowances	41,000,000	39,000,000
Increase in estimated liabilities for uncertain tax positions	1,000,000	1,000,000
Decrease in estimated liabilities for uncertain tax positions due to the lapse of the statute of limitations		1,000,000
Impact of unrecognized tax benefits, if recognized	4,000,000	5,000,000
Accrued interest and penalties	1,000,000	1,000,000
Jurisdictions statutes of limitations expiration period	12 months
Period of expiration of the statute of limitations for certain jurisdictions	Within the next twelve months
State and Local Jurisdiction
Income Taxes [Line Items]
Deferred state tax benefit (net of the federal benefit)	48,000,000
Minimum
Income Taxes [Line Items]
Foreign and U.S. state and local jurisdictions have statutes of limitations, in years	3
Maximum
Income Taxes [Line Items]
Foreign and U.S. state and local jurisdictions have statutes of limitations, in years	4
Net Operating Losses
Income Taxes [Line Items]
Increase in valuation allowance	2,000,000
Foreign Net Operating Losses
Income Taxes [Line Items]
Increase in valuation allowance	3,000,000	3,000,000
Psychiatric Solutions Inc
Income Taxes [Line Items]
Unfavorable discrete tax items			5,000,000
Deferred federal tax benefits	400,000
Deferred foreign tax benefit	3,000,000
Psychiatric Solutions Inc | Federal
Income Taxes [Line Items]
Net operating losses	1,000,000
Psychiatric Solutions Inc | Foreign Tax Authority
Income Taxes [Line Items]
Net operating losses	$ 9,000,000