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Goodwill and Intangible Assets (Details Textual) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Component of Company's Intangible Assets (Textual) [Abstract]        
Amortization expense of intangible assets $ 12.4 $ 5.4 $ 31.2 $ 15.1
Expected aggregate amortization expense of intangible assets for the next five fiscal years:        
Remainder of fiscal 2012 12.8   12.8  
Fiscal 2013 51.1   51.1  
Fiscal 2014 49.8   49.8  
Fiscal 2015 47.6   47.6  
Fiscal 2016 $ 45.4   $ 45.4