Stockholders' Equity, Comprehensive Income and Share-Based Compensation (Changes in Components of AOCI) (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Jul. 29, 2018	Jul. 30, 2017	Jul. 29, 2018	Jul. 30, 2017	Oct. 29, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance				$ 9,349	$ 7,217
Adoption of new accounting standards	[1]					$ 0
Other comprehensive loss before reclassifications				(11)	29
Amounts reclassified out of AOCI				(5)	(15)
Other comprehensive income (loss), net of tax		$ (2)	$ 9	(16)	14
Ending Balance		6,825	8,716	6,825	8,716
Unrealized Gain on Investments, Net
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance				53	30
Adoption of new accounting standards						5
Other comprehensive loss before reclassifications				(7)	23
Amounts reclassified out of AOCI				(12)	2
Other comprehensive income (loss), net of tax				(19)	25
Ending Balance		39	55	39	55
Unrealized Gain (Loss) on Derivative Instruments Qualifying as Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance				(11)	(18)
Adoption of new accounting standards						(2)
Other comprehensive loss before reclassifications				(4)	6
Amounts reclassified out of AOCI				9	(5)
Other comprehensive income (loss), net of tax				5	1
Ending Balance		(8)	(17)	(8)	(17)
Defined and Postretirement Benefit Plans
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance				(120)	(141)
Adoption of new accounting standards						0
Other comprehensive loss before reclassifications				0	0
Amounts reclassified out of AOCI				(2)	(12)
Other comprehensive income (loss), net of tax				(2)	(12)
Ending Balance		(122)	(153)	(122)	(153)
Cumulative Translation Adjustments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance				14	14
Adoption of new accounting standards						0
Other comprehensive loss before reclassifications				0	0
Amounts reclassified out of AOCI				0	0
Other comprehensive income (loss), net of tax				0	0
Ending Balance		14	14	14	14
AOCI Attributable to Parent
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance				(64)	(115)
Adoption of new accounting standards	[1]					$ 3
Other comprehensive income (loss), net of tax				(16)	14
Ending Balance		$ (77)	$ (101)	$ (77)	$ (101)

[1] Represents the reclassification adjustment related to the early adoption of Accounting Standards Update (ASU) 2018-02 Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. See Note 1.