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Income Taxes (Disposal Groups, including Discontinued Operations) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Income Tax Expense (Benefit) $ 10.8 $ 4.2 $ 14.2 $ 5.1
Operating Expense [Member]
       
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Income Tax Expense (Benefit) 11.9 8.1 17.5 9.6
Valuation Allowance of Deferred Tax Assets [Member]
       
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Income Tax Expense (Benefit) 1.1 (4.0) (1.1) (4.5)
Discontinued Operation, Tax Effect of Discontinued Operation       3.5
Other Expense [Member]
       
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Income Tax Expense (Benefit) $ 0 $ 0.1 $ (0.2) $ 0