Other Liabilities (Details) - USD ($) $ in Millions		Jun. 30, 2015	Sep. 30, 2014
Other Non-current Liabilities [Abstract]
Accrued income taxes (1)	[1]	$ 716	$ 855
Employee benefits		86	92
Other		77	58
Total		$ 879	$ 1,005

[1] The decrease in non-current accrued taxes is primarily due to a decrease in liabilities for uncertain tax positions. See Note 12—Income Taxes.