Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Oct. 25, 2015	Oct. 26, 2014	Oct. 27, 2013
Statement of Comprehensive Income [Abstract]
Net income	$ 1,377	$ 1,072	$ 256
Other comprehensive income (loss), net of tax:
Change in unrealized net gain on investments	(10)	(1)	9
Change in unrealized net loss on derivative instruments	(15)	(2)	1
Change in defined and postretirement benefit plans	0	(33)	18
Change in cumulative translation adjustments	9	(2)	(5)
Other comprehensive income (loss), net of tax	(16)	(38)	23
Comprehensive income	$ 1,361	$ 1,034	$ 279