Cash, Cash Equivalents and Investments - Summary of Contractual Maturity (Details) - USD ($) $ in Millions	Aug. 01, 2021	Oct. 25, 2020
Contractual maturities of investments
Due in one year or less, Cost	$ 394
Due after one through five years, Cost	891
No single maturity date, Cost	704
Total short-term and long-term investments cost	1,989	$ 1,847
Due in one year or less, Estimated Fair Value	395
Due after one through five years, Estimated Fair Value	899
No single maturity date, Estimated Fair Value	808
Estimated fair value of short-term and long-term investments	$ 2,102

Contractual maturities of investments Abstract.

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Equity And Debt Securities, Maturity, Without Single Maturity Date, Amortized Cost

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Equity And Debt Securities, Maturity, Without Single Maturity Date, Fair Value

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Cost of investment in debt investment in debt security measured at fair value with change in fair value recognized in net income (trading) and investment in equity security with change in fair value recognized in net income (FV-NI). Excludes equity method investment and investment in equity security without readily determinable fair value.

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Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

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