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Other Current Assets (Details) - USD ($)
$ in Millions
Jun. 30, 2015
Sep. 30, 2014
Other Current Assets Disclosure [Abstract]    
Current deferred income tax assets $ 19 $ 21
Asbestos-related recoveries (see Note 19) 14 15
Deposits and collateral 2 4
Prepaid and other 17 16
Other current assets $ 52 $ 56