Cash, Cash Equivalents, Restricted Cash and Borrowings Interest Expense, net (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Apr. 03, 2021	Mar. 28, 2020	Apr. 03, 2021	Mar. 28, 2020
Interest expense	$ (415)	$ (365)	$ (819)	$ (727)
Interest and investment income	131	63	243	139
Net periodic pension and postretirement benefit costs other than service costs	(36)	2	(68)	5
Interest expense, net	$ (320)	$ (300)	$ (644)	$ (583)

Amount of the cost of borrowed funds accounted for as interest expense.

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The net amount of nonoperating interest income (expense).

+ References

No definition available.

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Amount after accretion (amortization) of discount (premium), and investment expense, of interest income and dividend income on nonoperating securities.

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Amount of expense (reversal of expense) for net periodic benefit cost components, excluding service cost component, of defined benefit plan. Amount includes, but is not limited to, interest cost, expected (return) loss on plan asset, amortization of prior service cost (credit), amortization of (gain) loss, amortization of transition (asset) obligation, settlement (gain) loss, curtailment (gain) loss and certain termination benefits.

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