Stockholders' Equity, Comprehensive Income and Share-Based Compensation (Changes in Components of AOCI) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 26, 2015	Jul. 27, 2014	Jul. 26, 2015	Jul. 27, 2014
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance			$ (76)	$ (38)
Other comprehensive income (loss) before reclassifications			(47)	10
Amounts reclassified out of AOCI			5	(14)
Other comprehensive income (loss), net of tax	$ 7	$ (1)	(42)	(4)
Ending balance	(118)	(42)	(118)	(42)
Unrealized Gain on Investments, Net [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance			24	25
Other comprehensive income (loss) before reclassifications			(3)	8
Amounts reclassified out of AOCI			0	(9)
Other comprehensive income (loss), net of tax			(3)	(1)
Ending balance	21	24	21	24
Unrealized Gain (Loss) on Derivative Instruments Qualifying as Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance			0	2
Other comprehensive income (loss) before reclassifications			1	3
Amounts reclassified out of AOCI			(6)	(5)
Other comprehensive income (loss), net of tax			(5)	(2)
Ending balance	(5)	0	(5)	0
Defined and Postretirement Benefit Plans [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance			(105)	(72)
Other comprehensive income (loss) before reclassifications			(45)	0
Amounts reclassified out of AOCI			2	0
Other comprehensive income (loss), net of tax			(43)	0
Ending balance	(148)	(72)	(148)	(72)
Cumulative Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance			5	7
Other comprehensive income (loss) before reclassifications			0	(1)
Amounts reclassified out of AOCI			9	0
Other comprehensive income (loss), net of tax			9	(1)
Ending balance	$ 14	$ 6	$ 14	$ 6