Other Liabilities (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Sep. 30, 2014	Mar. 31, 2014
Other Liabilities Disclosure [Abstract]
Asbestos-related liabilities (see Note 19)	$ 105	$ 105
Restructuring (see Note 6)	2	2	3
Non-current deferred income tax liabilities	103	103
Liabilities for uncertain tax positions	12	14
Product warranties (see Note 14)	26	24	33
Environmental (see Note 19)	7	7
Indemnity obligations (see Note 19)	14	17
Other	32	37
Other liabilities	$ 301	$ 309