Derivative Instruments Carrying Amount and Cumulative Basis Adjustment for Fair Value Hedges (Details) - USD ($) $ in Millions		Dec. 28, 2019	Sep. 28, 2019
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Hedged Liability, Fair Value Hedge		$ 10,584	$ 10,683
Hedged Liability, Fair Value Hedge, Cumulative Increase (Decrease)	[1]	(83)	31
Current Portion of Borrowings
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Hedged Liability, Fair Value Hedge		1,123	1,121
Hedged Liability, Fair Value Hedge, Cumulative Increase (Decrease)		(2)	(3)
Borrowings
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Hedged Liability, Fair Value Hedge		9,461	9,562
Hedged Liability, Fair Value Hedge, Cumulative Increase (Decrease)		$ (81)	$ 34

[1] Includes $36 million and $37 million of gains on terminated interest rate swaps as of December 28, 2019 and September 28, 2019, respectively.