Annual report pursuant to Section 13 and 15(d)

Condensed Consolidating Information (Details)

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Condensed Consolidating Information (Details) (USD $)
In Millions, unless otherwise specified
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2011
Condensed Consolidating Information        
Stated interest rate of Notes due 2020 (as a percent) 5.50%      
Percentage ownership of subsidiaries with indebtedness guaranteed by the parent 100.00%      
Correction of Errors        
Shareholders' equity $ 593.8 $ 576.3 $ 506.3 $ 443.1