Share-Based Compensation (Compensation Expense of the Nonvested Shares Outstanding) (Details) (USD $) In Millions	Jun. 30, 2011
Share-Based Compensation
Third quarter 2011	$ 1.7
Fourth quarter of 2011	1.6
2012	5.0
2013	2.9
2014	0.3
Total	$ 11.5

Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost To Be Recognized In Next Quarter

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- Definition

Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost To Be Recognized In Second Following Quarter

+ Details

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- Definition

Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost To Be Recognized In Year One

+ Details

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- Definition

Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost To Be Recognized In Year Three

+ Details

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- Definition

Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost To Be Recognized In Year Two

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- Definition

As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph A240
-Subparagraph h
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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