Borrowings Commercial Paper Activity (Details) - USD ($) $ in Millions		12 Months Ended
		Sep. 28, 2024	Sep. 30, 2023
Commercial Paper Rollforward [Line Items]
Beginning Balance		$ 1,476	$ 1,662
Additions		4,736	3,841
Payments		(3,204)	(4,032)
Other Activity		32	5
Ending Balance		3,040	1,476
Commercial Paper with original maturities less that three months
Commercial Paper Rollforward [Line Items]
Beginning Balance		289	50
Additions	[1]	431	238
Payments	[1]	0	0
Other Activity		7	1
Ending Balance		727	289
Commercial paper with original maturities greater than three months
Commercial Paper Rollforward [Line Items]
Beginning Balance		1,187	1,612
Additions		4,305	3,603
Payments		(3,204)	(4,032)
Other Activity		25	4
Ending Balance		$ 2,313	$ 1,187

[1] Borrowings and reductions of borrowings are reported net.