Recent Accounting Pronouncements (Details Textual) (USD $) In Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Charity Care [Abstract]
Estimated cost incurred patients unable to pay	$ 28.8	$ 27.7	$ 88.3	$ 78.5
Charity Care, Methodology			The estimated cost of these charity care services was determined using a ratio of cost to gross charges and applying that ratio to the gross charges associated with providing care to charity patients for the period
Professional Liability Balance Sheet Disclosure [Abstract]
Increase in the other current assets	6.2		6.2
Increase in the other assets	34.6		34.6
Increase in the long term liabilities	$ 40.8		$ 40.8