Income Before Taxes by Fiscal Year (Detail) - USD ($) $ in Millions	12 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2016
Income Tax Disclosure [Abstract]
U.S.	$ 8,088	$ 8,440	$ 5,839
Non-U.S.	4,718	3,254	2,173
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	$ 12,806	$ 11,694	$ 8,012

The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations.

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Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

+ References

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The portion of earnings or loss from continuing operations before income taxes that is attributable to foreign operations, which is defined as Income or Loss generated from operations located outside the entity's country of domicile.

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