Adjustments Related to Fair Value Hedges Included in Net Interest Expense in Consolidated Statements of Income (Details) - Interest rate - Interest Expense - USD ($) $ in Millions	3 Months Ended
Dec. 29, 2018	Dec. 30, 2017
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on pay-floating swaps	$ 117	$ (64)
Gain (loss) on hedged borrowings	(117)	64
Derivative, Gain (Loss) on Derivative, Net	$ (14)	$ 7

Amount of gain (loss) from the increase (decrease) in fair value of derivative and nonderivative instruments designated as fair value hedging instruments recognized in the income statement.

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Amount of the increase (decrease) in fair value of the hedged item in a fair value hedge recognized in the income statement.

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Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

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