Stockholders' Equity, Comprehensive Income and Share-Based Compensation - Changes in Components of AOCI (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 26, 2020	Jan. 27, 2019	Oct. 29, 2018
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	$ 8,214	$ 6,845
Other comprehensive income (loss) before reclassifications	(6)	(7)
Amounts reclassified out of AOCI	(2)	(5)
Other comprehensive income (loss), net of tax	(8)	(12)
Ending Balance	8,660	8,209
Unrealized Gain on Investments, Net
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	11	7
Adoption of new accounting standards			$ (17)
Other comprehensive income (loss) before reclassifications	3	5
Amounts reclassified out of AOCI	(1)	0
Other comprehensive income (loss), net of tax	2	5
Ending Balance	13	(5)
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	(9)
Amounts reclassified out of AOCI	(1)
Other comprehensive income (loss), net of tax	(10)
Ending Balance	(26)
Unrealized Gain (Loss) on Derivative Instruments Qualifying as Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance		(9)
Adoption of new accounting standards			0
Other comprehensive income (loss) before reclassifications		(12)
Amounts reclassified out of AOCI		(5)
Other comprehensive income (loss), net of tax		(17)
Ending Balance		(26)
Defined and Postretirement Benefit Plans
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	(188)	(137)
Adoption of new accounting standards			0
Other comprehensive income (loss) before reclassifications	0	0
Amounts reclassified out of AOCI	0	0
Other comprehensive income (loss), net of tax	0	0
Ending Balance	(188)	(137)
Cumulative Translation Adjustments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	13	14
Adoption of new accounting standards			0
Other comprehensive income (loss) before reclassifications	0	0
Amounts reclassified out of AOCI	0	0
Other comprehensive income (loss), net of tax	0	0
Ending Balance	13	14
AOCI Attributable to Parent
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	(180)	(125)
Adoption of new accounting standards			$ (17)
Other comprehensive income (loss), net of tax	(8)	(12)
Ending Balance	$ (188)	$ (154)