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Impairment and Restructuring (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Mar. 31, 2014
Mar. 31, 2013
Sep. 30, 2013
Impaired Long Lived Assets Held and Used [Line Items]          
Asset Impairment Charges $ 17.8 $ 1.6 $ 17.8 $ 1.6  
Notes, Loans and Financing Receivable, Net, Current 232.4   232.4   229.3
Impairment Alabama [Member]
         
Impaired Long Lived Assets Held and Used [Line Items]          
Asset Impairment Charges     1.3 1.6  
Notes, Loans and Financing Receivable, Net, Current 12.9   12.9    
Business Realignment [Member]
         
Impaired Long Lived Assets Held and Used [Line Items]          
Asset Impairment Charges 16.5   16.5 0  
Headcount Percentage Restructuring 7.00%   7.00%    
Impaired abandoned software [Member]
         
Impaired Long Lived Assets Held and Used [Line Items]          
Asset Impairment Charges $ 7.7