Stockholders' Equity, Comprehensive Income and Share-Based Compensation (Accumulated Other Comprehensive Income (Loss) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Oct. 26, 2014	Oct. 27, 2013	Oct. 28, 2012
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ (38)
Other comprehensive income (loss) before reclassifications	(26)
Amounts reclassified out of AOCI	(12)
Other comprehensive loss, net of tax	(38)	23	(67)
Ending balance	(76)	(38)
Unrealized Gain on Investments, Net [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	25
Other comprehensive income (loss) before reclassifications	8
Amounts reclassified out of AOCI	(9)
Other comprehensive loss, net of tax	(1)
Ending balance	24
Unrealized Gain on Derivative Instruments Qualifying as Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	2
Other comprehensive income (loss) before reclassifications	4
Amounts reclassified out of AOCI	(6)
Other comprehensive loss, net of tax	(2)
Ending balance	0
Defined and Postretirement Benefit Plans [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(72)
Other comprehensive income (loss) before reclassifications	(36)
Amounts reclassified out of AOCI	3
Other comprehensive loss, net of tax	(33)
Ending balance	(105)
Cumulative Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	7
Other comprehensive income (loss) before reclassifications	(2)
Amounts reclassified out of AOCI	0
Other comprehensive loss, net of tax	(2)
Ending balance	$ 5