Other Assets (Details) - USD ($) $ in Millions	Jun. 30, 2015	Sep. 30, 2014
Other Assets, Noncurrent [Abstract]
Investments in non-consolidated joint ventures	$ 96	$ 106
Asbestos-related recoveries (see Note 19)	40	45
Unamortized debt issuance costs	28	30
Capitalized software costs, net	25	25
Non-current deferred income tax assets, net	17	15
Assets for uncertain tax positions	5	5
Prepaid pension costs	120	104
Other	17	25
Other assets	$ 348	$ 355