Goodwill, Purchased Technology and Other Intangible Assets - Schedule of Goodwill and Other Indefinite-lived Intangible Assets (Details) - USD ($) $ in Millions	Jan. 26, 2020	Oct. 27, 2019
Goodwill [Line Items]
Goodwill	$ 3,399	$ 3,399
Semiconductor Systems
Goodwill [Line Items]
Goodwill	2,182	2,182
Applied Global Services
Goodwill [Line Items]
Goodwill	1,018	1,018
Display and Adjacent Markets
Goodwill [Line Items]
Goodwill	$ 199	$ 199

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant