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Impairment and Restructuring (Tables)
12 Months Ended
Sep. 30, 2013
Impairment and Restructuring [Abstract]  
Details of Impairment of Long-Lived Assets Held and Used by Asset
Years Ended September 30,
 
2013
  
2012
  
2011
 
Alabama
 
$
2.3
  
$
12.8
  
$
3.6
 
Walker Digital
  
-
   
14.6
   
-
 
Entraction
  
-
   
15.1
   
-
 
Other impairments
  
1.3
   
-
   
12.2
 
Total
 
$
3.6
  
$
42.5
  
$
15.8