Derivative Instruments - Carrying Amount and Cumulative Basis Adjustment for Fair Value Hedges (Details) - USD ($) $ in Millions	Sep. 30, 2023	Oct. 01, 2022
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Hedged Liability, Fair Value Hedge	$ 12,187	$ 13,355
Hedged Liability, Fair Value Hedge, Cumulative Increase (Decrease)	(1,753)	(1,736)
Current Portion of Borrowings
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Hedged Liability, Fair Value Hedge	$ 1,439	$ 997
Hedged Liability, Statement of Financial Position [Extensible Enumeration]	Current portion of borrowings	Current portion of borrowings
Hedged Liability, Fair Value Hedge, Cumulative Increase (Decrease)	$ (59)	$ (3)
Long-term Portion of Borrowings
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Hedged Liability, Fair Value Hedge	$ 10,748	$ 12,358
Hedged Liability, Statement of Financial Position [Extensible Enumeration]	Borrowings	Borrowings
Hedged Liability, Fair Value Hedge, Cumulative Increase (Decrease)	$ (1,694)	$ (1,733)