Income Before Income Taxes (Detail) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
Dec. 29, 2018	Dec. 30, 2017	Sep. 29, 2018	Sep. 30, 2017	Oct. 01, 2016
Income Before Income Taxes
Domestic (including U.S. exports)			$ 12,914	$ 12,611	$ 14,018
Foreign subsidiaries			1,815	1,177	850
Income before income taxes	$ 3,431	$ 3,745	$ 14,729	$ 13,788	$ 14,868

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.

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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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