Reconciliation of Segment Operating Income to Income before Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 27, 2015	Jun. 28, 2014	Jun. 27, 2015	Jun. 28, 2014
Reconciling Items for Operating Income (Loss) from Segment to Consolidated
Segment operating income	$ 4,120	$ 3,857	$ 11,147	$ 10,230
Corporate and unallocated shared expenses	(146)	(137)	(441)	(408)
Restructuring and impairment charges	0	0	0	(67)
Other expense, net	0	0	0	(31)
Interest income/(expense), net	(12)	(50)	(62)	61
Income before income taxes	$ 3,962	$ 3,670	$ 10,644	$ 9,785