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Contingencies (Details 1) - USD ($)
$ in Millions
Jun. 30, 2015
Sep. 30, 2014
Loss Contingencies [Line Items]    
Asbestos-related liabilities $ 17 $ 19
Maremont Asbestos    
Loss Contingencies [Line Items]    
Pending and future claims 73 73
Billed but unpaid claims 2 3
Asbestos-related liabilities 75 76
Asbestos-related insurance recoveries 43 49
Rockwell Asbestos    
Loss Contingencies [Line Items]    
Pending and future claims 48 48
Billed but unpaid claims 2 2
Asbestos-related liabilities 50 50
Asbestos-related insurance recoveries $ 11 $ 11