Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies (Details 2)

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Summary of Significant Accounting Policies (Details 2) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2011
Trade Receivables      
Reserve for trade receivables $ 19.3 $ 16.5  
Inventories      
Percentage of inventories determined by LIFO method 25.00% 48.00%  
Raw materials and components 58.3 39.1  
Work in process 74.8 13.9  
Finished goods 44.4 37.0  
Total inventories 177.5 90.0  
Difference in valuation if the FIFO method of inventory accounting had been used for all inventories 13.7 13.8  
Properties      
Depreciation expense 25.3 18.7 19.1
Cost 435.6 381.8  
Accumulated Depreciation (263.7) (263.9)  
Land and land improvements
     
Properties      
Cost 17.0 16.8  
Accumulated Depreciation (3.5) (3.5)  
Buildings and building equipment
     
Properties      
Cost 101.8 92.5  
Accumulated Depreciation (57.6) (55.5)  
Buildings and building equipment | Minimum
     
Properties      
Estimated useful lives 6 years    
Buildings and building equipment | Maximum
     
Properties      
Estimated useful lives 40 years    
Machinery and equipment
     
Properties      
Cost 316.8 272.5  
Accumulated Depreciation $ (202.6) $ (204.9)  
Machinery and equipment | Minimum
     
Properties      
Estimated useful lives 3 years    
Machinery and equipment | Maximum
     
Properties      
Estimated useful lives 10 years