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, 2020	Jul. 28, 2019	Jul. 26, 2020	Jul. 28, 2019
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	$ 9,024	$ 8,201	$ 8,214	$ 6,845
Other comprehensive income (loss) before reclassifications			(90)	5
Amounts reclassified out of AOCI			(7)
Other comprehensive income (loss), net of tax	38	1	(97)	5
Ending Balance	9,569	8,116	9,569	8,116
Unrealized Gain (Loss) on Investments, Net
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance			11	7
Other comprehensive income (loss) before reclassifications			19	19
Amounts reclassified out of AOCI			(6)
Other comprehensive income (loss), net of tax			13	19
Ending Balance	24	9	24	9
Unrealized Gain (Loss) on Investments, Net | Cumulative Effect, Period of Adoption, Adjustment
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance				(17)
Unrealized Gain (Loss) on Derivative Instruments Qualifying as Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance			(16)
Other comprehensive income (loss) before reclassifications			(109)
Amounts reclassified out of AOCI			(1)
Other comprehensive income (loss), net of tax			(110)
Ending Balance	(126)		(126)
Unrealized Gain (Loss) on Derivative Instruments Qualifying as Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance				(9)
Other comprehensive income (loss) before reclassifications				(13)
Other comprehensive income (loss), net of tax				(13)
Ending Balance		(22)		(22)
Unrealized Gain (Loss) on Derivative Instruments Qualifying as Cash Flow Hedges | Cumulative Effect, Period of Adoption, Adjustment
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance				0
Defined and Postretirement Benefit Plans
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance			(188)	(137)
Other comprehensive income (loss) before reclassifications			0	0
Amounts reclassified out of AOCI			0
Other comprehensive income (loss), net of tax			0	0
Ending Balance	(188)	(137)	(188)	(137)
Defined and Postretirement Benefit Plans | Cumulative Effect, Period of Adoption, Adjustment
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance				0
Cumulative Translation Adjustments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance			13	14
Other comprehensive income (loss) before reclassifications			0	(1)
Amounts reclassified out of AOCI			0
Other comprehensive income (loss), net of tax			0	(1)
Ending Balance	13	13	13	13
Cumulative Translation Adjustments | Cumulative Effect, Period of Adoption, Adjustment
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance				0
AOCI Attributable to Parent
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	(315)	(138)	(180)	(125)
Other comprehensive income (loss), net of tax	38	1	(97)	5
Ending Balance	$ (277)	$ (137)	$ (277)	(137)
AOCI Attributable to Parent | Cumulative Effect, Period of Adoption, Adjustment
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance				$ (17)