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Fair Value Measurements (Details) (Fair Value, Measurements, Recurring [Member], USD $)
In Millions, unless otherwise specified
Sep. 30, 2014
Sep. 30, 2013
Estimate of Fair Value Measurement [Member]
    
Non-pension financial assets and liabilities measured at fair value    
Total assets $ 4.8 $ 1.7
Total liabilities 8.5 5.2
Estimate of Fair Value Measurement [Member] | Foreign Exchange Option [Member]
    
Non-pension financial assets and liabilities measured at fair value    
Total assets 1.7 0.1
Estimate of Fair Value Measurement [Member] | Foreign Exchange Forward [Member]
    
Non-pension financial assets and liabilities measured at fair value    
Total assets 3.1 1.6
Total liabilities 3.7 1.5
Estimate of Fair Value Measurement [Member] | Interest Rate Swap [Member]
    
Non-pension financial assets and liabilities measured at fair value    
Total liabilities 4.8 3.7
Fair Value, Inputs, Level 2 [Member]
    
Non-pension financial assets and liabilities measured at fair value    
Total assets 4.8 1.7
Total liabilities 8.5 5.2
Fair Value, Inputs, Level 2 [Member] | Foreign Exchange Option [Member]
    
Non-pension financial assets and liabilities measured at fair value    
Total assets 1.7 0.1
Fair Value, Inputs, Level 2 [Member] | Foreign Exchange Forward [Member]
    
Non-pension financial assets and liabilities measured at fair value    
Total assets 3.1 1.6
Total liabilities 3.7 1.5
Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap [Member]
    
Non-pension financial assets and liabilities measured at fair value    
Total liabilities $ 4.8 $ 3.7