Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net Income	$ 183	$ 20	$ 461	$ 619
Other Comprehensive (Loss) Income, Net of Tax
Foreign currency translation adjustments	(125)	76	(99)	42
Defined benefit pension and postretirement plans	17	13	33	28
Cash flow hedges	(109)	(1)	(70)	0
Other Comprehensive (Loss) Income, Net of Tax	(218)	88	(136)	70
Comprehensive (Loss) Income	$ (35)	$ 108	$ 325	$ 689

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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