Derivative Instruments Carrying Amount and Cumulative Basis Adjustment for Fair Value Hedges (Details) - USD ($) $ in Millions		Dec. 29, 2018	Sep. 29, 2018
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Hedged Liability, Fair Value Hedge		$ 8,089	$ 8,010
Hedged Liability, Fair Value Hedge, Cumulative Increase (Decrease)	[1]	(186)	(304)
Current Portion of Borrowings
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Hedged Liability, Fair Value Hedge		1,590	1,585
Hedged Liability, Fair Value Hedge, Cumulative Increase (Decrease)		(9)	(14)
Borrowings
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Hedged Liability, Fair Value Hedge		6,499	6,425
Hedged Liability, Fair Value Hedge, Cumulative Increase (Decrease)		$ (177)	$ (290)

[1] Includes $40 million and $41 million of gains on terminated interest rate swaps as of December 29, 2018 and September 29, 2018, respectively.