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Acquisitions - Acquacue. Inc. (Details) (Aquacue, USD $)
In Millions, unless otherwise specified
12 Months Ended
Sep. 30, 2013
Jun. 30, 2013
Apr. 02, 2013
Dec. 31, 2013
Technologies
Business Acquisition        
Percentage of the outstanding common stock of Racine Federated, Inc. (as a percentage)     100.00%  
Purchase price in cash     $ 13.8  
Deferred cost of acquired entity     3.0  
Current assets 0.1      
Deferred tax assets   1.3    
Intangibles   3.9    
Goodwill 8.8      
Current liabilities   0.3    
Estimated average useful life (in years)       10 years
Transaction costs $ 0.1