Annual report pursuant to Section 13 and 15(d)

Goodwill And Other Intangible Assets And Liabilities (Estimated Amortization Expense Relating To Intangible Assets) (Details)

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Goodwill And Other Intangible Assets And Liabilities (Estimated Amortization Expense Relating To Intangible Assets) (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2011
Goodwill And Other Intangible Assets And Liabilities [Abstract]  
Estimated amortization expense for 2012 $ 18.0
Estimated amortization expense for 2013 17.9
Estimated amortization expense for 2014 17.9
Estimated amortization expense for 2015 6.0
Estimated amortization expense for 2016 6.0
Estimated amortization expense for 2012 to 2016 $ 65.8