Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Statement of Comprehensive Income [Abstract]
Net Income	$ 278	$ 599
Other Comprehensive Income (Loss), Net of Tax
Foreign currency translation adjustments	26	(35)
Defined benefit pension and postretirement plans	17	15
Cash flow hedges	39	1
Other Comprehensive Income (Loss), Net of Tax	82	(18)
Comprehensive Income	$ 359	$ 581

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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Amount, after tax and reclassification, of gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness, attributable to parent.

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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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