Stockholders' Equity, Comprehensive Income and Share-Based Compensation (Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions		12 Months Ended
		Oct. 31, 2021	Oct. 25, 2020	Oct. 27, 2019
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance		$ 10,578	$ 8,214	$ 6,845
Other comprehensive income (loss) before reclassifications		34	(120)	(46)
Amounts reclassified out of AOCI		5	1	8
Other comprehensive income (loss), net of tax		39	(119)	(38)
Ending Balance		12,247	10,578	8,214
Cumulative Effect, Period of Adoption, Adjustment
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	[1]			1,553
Unrealized Gain (Loss) on Investments, Net
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance		20	11	7
Other comprehensive income (loss) before reclassifications		(14)	16	22
Amounts reclassified out of AOCI		(7)	(7)	(1)
Other comprehensive income (loss), net of tax		(21)	9	21
Ending Balance		(1)	20	11
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		(133)	(16)	(9)
Other comprehensive income (loss) before reclassifications		28	(115)	(10)
Amounts reclassified out of AOCI		2	(2)	3
Other comprehensive income (loss), net of tax		30	(117)	(7)
Ending Balance		(103)	(133)	(16)
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		(199)	(188)	(137)
Other comprehensive income (loss) before reclassifications		20	(21)	(57)
Amounts reclassified out of AOCI		10	10	6
Other comprehensive income (loss), net of tax		30	(11)	(51)
Ending Balance		(169)	(199)	(188)
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	13	14
Other comprehensive income (loss) before reclassifications		0	0	(1)
Amounts reclassified out of AOCI		0	0	0
Other comprehensive income (loss), net of tax		0	0	(1)
Ending Balance		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		(299)	(180)	(125)
Other comprehensive income (loss), net of tax		39	(119)	(38)
Ending Balance		$ (260)	$ (299)	(180)
AOCI Attributable to Parent | Cumulative Effect, Period of Adoption, Adjustment
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	[1]			$ (17)

[1] Represents the adjustment related to the adoption of Accounting Standard Update (ASU) 2016-01 Financial Instruments-Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities and ASU 2016-16 Income Tax (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory.