Borrowing Activity (Details) $ in Millions		9 Months Ended
		Jun. 27, 2015 USD ($)
Borrowings [Roll Forward]
Borrowings beginning balance		$ 14,840
Borrowings		4,362
Reductions of borrowings		(3,851)
Other Activity		(78)
Borrowings ending balance		15,273
Commercial paper with original maturities less than three months
Borrowings [Roll Forward]
Borrowings beginning balance	[1]	50
Borrowings	[1]	1,781
Reductions of borrowings	[1]	0
Other Activity	[1]	2
Borrowings ending balance	[1]	1,833
Commercial paper with original maturities greater than three months
Borrowings [Roll Forward]
Borrowings beginning balance		0
Borrowings		2,394
Reductions of borrowings		(1,823)
Other Activity		1
Borrowings ending balance		572
U.S. medium-term notes
Borrowings [Roll Forward]
Borrowings beginning balance		13,713
Borrowings		0
Reductions of borrowings		(1,800)
Other Activity		7
Borrowings ending balance		11,920
Other Foreign Currency Denominated Debt
Borrowings [Roll Forward]
Borrowings beginning balance		783
Borrowings		186
Reductions of borrowings		(203)
Other Activity		(39)
Borrowings ending balance		727
Other
Borrowings [Roll Forward]
Borrowings beginning balance		294
Borrowings		1
Reductions of borrowings		(25)
Other Activity		(49)
Borrowings ending balance		$ 221

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