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Income Taxes (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Income Taxes [Abstract]        
Income Tax Expense (Benefit) $ 1.3 $ 1.2 $ 6.7 $ 2.2
Unrecognized Tax Benefits, Increases Resulting from Current Period Tax Positions     0.4  
Unrecognized Tax Benefits, Decreases Resulting from Current Period Tax Positions Impacting Effective Tax Rate     $ 0.3  
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate 32.00% 20.00% 28.00% 25.00%