Reconciliation of Segment Operating Income to Income before Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Apr. 01, 2017	Apr. 02, 2016		Apr. 01, 2017	Apr. 02, 2016
Reconciling Items for Operating Income (Loss) from Segment to Consolidated
Segment operating income	$ 3,996	$ 3,822		$ 7,952	$ 8,089
Corporate and unallocated shared expenses	(161)	(162)		(293)	(298)
Restructuring and impairment charges	0	0		0	(81)
Interest expense, net	(84)	(67)		(183)	(91)
Vice Gain	0	0		0	332
Infinity Charge	0	(147)	[1]	0	(147)	[1]
Income before income taxes	$ 3,751	$ 3,446		$ 7,476	$ 7,804

[1] In the prior-year quarter, the Company discontinued its Infinity console game business, which is reported in the Consumer Products & Interactive Media segment, and recorded a charge primarily to write down inventory. The charge also included severance and other asset impairments. The charge was reported in “Cost of products” in the Condensed Consolidated Statement of Income.