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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of cash equivalents restricted as to withdrawal or usage. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Fair Value Measurements (Assets Measured at Fair Value on a Recurring Basis) (Details) - USD ($) $ in Millions	Oct. 31, 2021	Oct. 25, 2020	Oct. 27, 2019
Assets:
Estimated fair value of fixed income securities	$ 5,526	$ 6,071
Equity investments with readily determinable values
Equity investments, fair value	687	184
Restricted cash equivalents included in deferred income taxes and other assets	106	115	$ 0
Money market funds \| Deferred Income Taxes and Other Assets, Net [Member]
Equity investments with readily determinable values
Restricted cash equivalents included in deferred income taxes and other assets	106	115
U.S. Treasury and agency securities
Assets:
Estimated fair value of fixed income securities	314	398
Non-U.S. government securities
Assets:
Estimated fair value of fixed income securities	5
Municipal securities
Assets:
Estimated fair value of fixed income securities	369	365
Commercial paper, corporate bonds and medium-term notes
Assets:
Estimated fair value of fixed income securities	587	499
Asset-backed and mortgage-backed securities
Assets:
Estimated fair value of fixed income securities	557	479
Publicly traded equity securities
Equity investments with readily determinable values
Equity investments, fair value	58	45
Fair Value, Measurements, Recurring
Equity investments with readily determinable values
Equity investments, fair value	58	45
Assets, fair value disclosure	5,584	6,116
Fair Value, Measurements, Recurring \| Money market funds
Assets:
Estimated fair value of fixed income securities	3,662	4,324
Fair Value, Measurements, Recurring \| U.S. Treasury and agency securities
Assets:
Estimated fair value of fixed income securities	314	398
Fair Value, Measurements, Recurring \| Non-U.S. government securities
Assets:
Estimated fair value of fixed income securities	5	0
Fair Value, Measurements, Recurring \| Municipal securities
Assets:
Estimated fair value of fixed income securities	391	371
Fair Value, Measurements, Recurring \| Commercial paper, corporate bonds and medium-term notes
Assets:
Estimated fair value of fixed income securities	597	499
Fair Value, Measurements, Recurring \| Asset-backed and mortgage-backed securities
Assets:
Estimated fair value of fixed income securities	557	479
Fair Value, Measurements, Recurring \| Publicly traded equity securities
Equity investments with readily determinable values
Equity investments, fair value	58	45
Fair Value, Measurements, Recurring \| Level 1
Assets:
Estimated fair value of fixed income securities	3,958	4,699
Equity investments with readily determinable values
Equity investments, fair value	58	45
Assets, fair value disclosure	4,016	4,744
Fair Value, Measurements, Recurring \| Level 1 \| Money market funds
Assets:
Estimated fair value of fixed income securities	3,662	4,324
Fair Value, Measurements, Recurring \| Level 1 \| U.S. Treasury and agency securities
Assets:
Estimated fair value of fixed income securities	296	375
Fair Value, Measurements, Recurring \| Level 1 \| Non-U.S. government securities
Assets:
Estimated fair value of fixed income securities	0	0
Fair Value, Measurements, Recurring \| Level 1 \| Municipal securities
Assets:
Estimated fair value of fixed income securities	0	0
Fair Value, Measurements, Recurring \| Level 1 \| Commercial paper, corporate bonds and medium-term notes
Assets:
Estimated fair value of fixed income securities	0	0
Fair Value, Measurements, Recurring \| Level 1 \| Asset-backed and mortgage-backed securities
Assets:
Estimated fair value of fixed income securities	0	0
Fair Value, Measurements, Recurring \| Level 1 \| Publicly traded equity securities
Equity investments with readily determinable values
Equity investments, fair value	58	45
Fair Value, Measurements, Recurring \| Level 2
Assets:
Estimated fair value of fixed income securities	1,568	1,372
Equity investments with readily determinable values
Equity investments, fair value	0	0
Assets, fair value disclosure	1,568	1,372
Fair Value, Measurements, Recurring \| Level 2 \| Money market funds
Assets:
Estimated fair value of fixed income securities	0	0
Fair Value, Measurements, Recurring \| Level 2 \| U.S. Treasury and agency securities
Assets:
Estimated fair value of fixed income securities	18	23
Fair Value, Measurements, Recurring \| Level 2 \| Non-U.S. government securities
Assets:
Estimated fair value of fixed income securities	5	0
Fair Value, Measurements, Recurring \| Level 2 \| Municipal securities
Assets:
Estimated fair value of fixed income securities	391	371
Fair Value, Measurements, Recurring \| Level 2 \| Commercial paper, corporate bonds and medium-term notes
Assets:
Estimated fair value of fixed income securities	597	499
Fair Value, Measurements, Recurring \| Level 2 \| Asset-backed and mortgage-backed securities
Assets:
Estimated fair value of fixed income securities	557	479
Fair Value, Measurements, Recurring \| Level 2 \| Publicly traded equity securities
Equity investments with readily determinable values
Equity investments, fair value	$ 0	$ 0