Annual report pursuant to Section 13 and 15(d)

Description of the Business (Details)

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Description of the Business (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended 3 Months Ended 12 Months Ended
Sep. 30, 2014
segment
Sep. 30, 2013
Sep. 30, 2012
Dec. 31, 2013
Recorded Adjustment
Sep. 30, 2013
Recorded Adjustment
Number of reportable segments 2        
Correction of Errors          
Reduction in operating expenses $ 414.7 $ 400.6 $ 240.1 $ (2.0) $ (8.5)
Increase in cost of goods sold 1,078.0 1,034.7 594.3   8.5
Adjustment to correct a prior period error         $ 2.0