Recent Accounting Pronouncements (Details) (USD $) In Millions	3 Months Ended	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Charity Care [Abstract]
Estimated cost incurred patients unable to pay	$ 28.0	$ 25.3	$ 54.1	$ 50.8
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	2.5		2.5
Increase in the other assets	41.1		41.1
Increase in the long term liabilities	$ 43.6		$ 43.6

Increase in the long term liabilities from the adoption of ASU 2010-24.

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Increase in the other assets from the adoption of ASU 2010-24.

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- Definition

Increase in the other current assets from the adoption of ASU 2010-24.

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Professional Liability Balance Sheet Disclosure .

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- Definition

The amount of charity care provided during the period based on the provider's direct and indirect costs of providing charity care services.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-SubTopic 605
-Topic 954
-URI http://asc.fasb.org/extlink&oid=6963661&loc=d3e8255-115641

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Description of the method used to determine the costs of providing charity care.

+ References

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