Cash, Cash Equivalents and Investments - Gain (Loss) on Equity Investments (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
May 02, 2021	Apr. 26, 2020	May 02, 2021	Apr. 26, 2020
Gain (Loss) on Securities [Line Items]
Total gain (loss) on equity investments, net	$ 20	$ (7)	$ 28	$ (11)
Publicly traded equity securities
Gain (Loss) on Securities [Line Items]
Unrealized gain	3	3	11	5
Unrealized loss	(2)	(12)	(2)	(15)
Equity investments in privately-held companies
Gain (Loss) on Securities [Line Items]
Unrealized gain	30	9	31	9
Unrealized loss	(5)	(2)	(8)	(3)
Realized gain on sales	1	1	3	1
Realized loss on sales or impairment	$ (7)	$ (6)	$ (7)	$ (8)

Amount of unrealized and realized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 321
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=120269885&loc=SL75117546-209714

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Amount of realized gain from sale of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 321
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=120269885&loc=SL75117546-209714

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Amount of realized loss from sale of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Amount of unrealized gain on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Amount of unrealized loss on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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