Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Statement of Comprehensive Income [Abstract]
Net Income	$ 695	$ 1,185	$ 1,293
Other Comprehensive (Loss) Income, Net of Tax
Foreign currency translation adjustments	(692)	(344)	23
Defined benefit pension and postretirement plans	(36)	(147)	257
Unrealized (losses) gains on cash flow hedges, net of amounts realized	(9)	5	7
Other Comprehensive (Loss) Income, Net of Tax	(737)	(486)	286
Comprehensive (Loss) Income	$ (42)	$ 699	$ 1,579