Quarterly report pursuant to Section 13 or 15(d)

Retirement Benefits (Details)

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Retirement Benefits (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Mar. 31, 2013
Mar. 31, 2012
Dec. 01, 2012
Retirement Benefits          
Fair value of projected benefit obligations acquired         $ 141.6
Fair value of plan assets         16.0
Defined benefit plans          
Service costs 1.6 1.5 3.2 3.0  
Interest costs 4.4 3.1 7.9 6.3  
Expected return on plan assets (3.5) (3.3) (6.9) (6.7)  
Amortization of unrecognized prior service cost, net 0.2 0.2 0.4 0.4  
Amortization of net loss 1.8 1.5 3.6 2.9  
Net pension costs 4.5 3.0 8.2 5.9  
Expenses related to defined contribution plans 2.1 2.1 4.1 3.9  
Postretirement healthcare costs, net 0.2 0.2 0.3 0.4  
Coperion
         
Retirement and Postemployment Benefits          
Assumed liability         125.6
Minimum contributions $ 7.7   $ 7.7