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Contingencies (Tables)
 12 Months Ended
Sep. 30, 2014
Contingencies [Abstract]  
Product Warranty Disclosure
Years ended September 30,
 
2014
  
2013
  
2012
 
Beginning balance
 
$
4.4
  
$
4.2
  
$
6.2
 
Reduction for payments made
  
(3.4
)
  
(5.7
)
  
(5.9
)
Accrual for new warranties issued
  
4.4
   
8.0
   
7.6
 
Adjustments for pre-existing warranties
  
(2.1
)
  
(2.1
)
  
(3.7
)
Ending balance
 
$
3.3
  
$
4.4
  
$
4.2