Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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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 (Details) - USD ($) $ in Millions	Jul. 26, 2020	Oct. 27, 2019	Jul. 28, 2019
Equity investments with readily determinable values
Equity investments with readily determinable values	$ 167	$ 157
Restricted cash equivalents included in deferred income taxes and other assets	115		$ 0
Money market funds* \| Deferred Income Taxes and Other Assets, Net
Equity investments with readily determinable values
Restricted cash equivalents included in deferred income taxes and other assets	115
U.S. Treasury and agency securities
Assets:
Available-for-sale debt security investments	370	337
Municipal securities
Assets:
Available-for-sale debt security investments	381	406
Commercial paper, corporate bonds and medium-term notes
Assets:
Available-for-sale debt security investments	496	647
Asset-backed and mortgage-backed securities
Assets:
Available-for-sale debt security investments	530	635
Publicly traded equity securities
Equity investments with readily determinable values
Equity investments with readily determinable values	44	45
Recurring fair value measurements
Assets:
Available-for-sale debt security investments	5,232	4,093
Equity investments with readily determinable values
Equity investments with readily determinable values	44	45
Total assets	5,276	4,138
Recurring fair value measurements \| Money market funds*
Assets:
Available-for-sale debt security investments	3,356	1,677
Recurring fair value measurements \| U.S. Treasury and agency securities
Assets:
Available-for-sale debt security investments	370	341
Recurring fair value measurements \| Non-U.S. government securities
Assets:
Available-for-sale debt security investments	0	10
Recurring fair value measurements \| Municipal securities
Assets:
Available-for-sale debt security investments	383	406
Recurring fair value measurements \| Commercial paper, corporate bonds and medium-term notes
Assets:
Available-for-sale debt security investments	593	1,024
Recurring fair value measurements \| Asset-backed and mortgage-backed securities
Assets:
Available-for-sale debt security investments	530	635
Recurring fair value measurements \| Publicly traded equity securities
Equity investments with readily determinable values
Equity investments with readily determinable values	44	45
Recurring fair value measurements \| Level 1
Assets:
Available-for-sale debt security investments	3,709	2,000
Equity investments with readily determinable values
Equity investments with readily determinable values	44	45
Total assets	3,753	2,045
Recurring fair value measurements \| Level 1 \| Money market funds*
Assets:
Available-for-sale debt security investments	3,356	1,677
Recurring fair value measurements \| Level 1 \| U.S. Treasury and agency securities
Assets:
Available-for-sale debt security investments	353	323
Recurring fair value measurements \| Level 1 \| Non-U.S. government securities
Assets:
Available-for-sale debt security investments	0	0
Recurring fair value measurements \| Level 1 \| Municipal securities
Assets:
Available-for-sale debt security investments	0	0
Recurring fair value measurements \| Level 1 \| Commercial paper, corporate bonds and medium-term notes
Assets:
Available-for-sale debt security investments	0	0
Recurring fair value measurements \| Level 1 \| Asset-backed and mortgage-backed securities
Assets:
Available-for-sale debt security investments	0	0
Recurring fair value measurements \| Level 1 \| Publicly traded equity securities
Equity investments with readily determinable values
Equity investments with readily determinable values	44	45
Recurring fair value measurements \| Level 2
Assets:
Available-for-sale debt security investments	1,523	2,093
Equity investments with readily determinable values
Equity investments with readily determinable values	0	0
Total assets	1,523	2,093
Recurring fair value measurements \| Level 2 \| Money market funds*
Assets:
Available-for-sale debt security investments	0	0
Recurring fair value measurements \| Level 2 \| U.S. Treasury and agency securities
Assets:
Available-for-sale debt security investments	17	18
Recurring fair value measurements \| Level 2 \| Non-U.S. government securities
Assets:
Available-for-sale debt security investments	0	10
Recurring fair value measurements \| Level 2 \| Municipal securities
Assets:
Available-for-sale debt security investments	383	406
Recurring fair value measurements \| Level 2 \| Commercial paper, corporate bonds and medium-term notes
Assets:
Available-for-sale debt security investments	593	1,024
Recurring fair value measurements \| Level 2 \| Asset-backed and mortgage-backed securities
Assets:
Available-for-sale debt security investments	530	635
Recurring fair value measurements \| Level 2 \| Publicly traded equity securities
Equity investments with readily determinable values
Equity investments with readily determinable values	$ 0	$ 0