Goodwill and Intangible Assets (Goodwill Rollforward) (Details) $ in Millions	3 Months Ended
Feb. 02, 2020 USD ($) segment
Goodwill [Line Items]
Number of reportable segments \| segment	2
Goodwill [Roll Forward]
Balance as of November 3, 2019	$ 36,714
Reallocation due to change in segments	0
Balance as of February 2, 2020	43,472
CA Technologies, Inc.
Goodwill [Roll Forward]
CA Merger	6,758
Semiconductor Solutions
Goodwill [Roll Forward]
Balance as of November 3, 2019	25,929
Reallocation due to change in segments	9
Balance as of February 2, 2020	25,973
Semiconductor Solutions \| CA Technologies, Inc.
Goodwill [Roll Forward]
CA Merger	35
Infrastructure Software
Goodwill [Roll Forward]
Balance as of November 3, 2019	10,776
Reallocation due to change in segments	0
Balance as of February 2, 2020	17,499
Infrastructure Software \| CA Technologies, Inc.
Goodwill [Roll Forward]
CA Merger	6,723
IP Licensing
Goodwill [Roll Forward]
Balance as of November 3, 2019	9
Reallocation due to change in segments	(9)
Balance as of February 2, 2020	0
IP Licensing \| CA Technologies, Inc.
Goodwill [Roll Forward]
CA Merger	$ 0

Reallocation of goodwill due to change in segments resulting from change in organizational structure.

No definition available.

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- Definition

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.

+ References

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

+ Details

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- Definition

Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

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- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

No definition available.

+ Details

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