Other Current Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2015	Sep. 30, 2014	Jun. 30, 2014
Other Current Liabilities Disclosure [Abstract]
Compensation and benefits	$ 123	$ 146
Income taxes	12	8
Taxes other than income taxes	46	50
Accrued interest	16	15
Product warranties	23	27	$ 23
Environmental reserves (see Note 19)	8	12
Restructuring (see Note 6)	11	9	$ 6
Asbestos-related liabilities (see Note 19)	17	17
Indemnity obligations (see Note 19)	2	11
Other	45	56
Other current liabilities	$ 303	$ 351