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SEGMENT INFORMATION (General) (Details) | 12 Months Ended
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Oct. 31, 2019
Segment Reporting [Abstract] |
Number of Reportable Segments | 3
Segment Reporting, Factors Used to Identify Entity's Reportable Segments | Our operating segments were determined based primarily on how the chief operating decision maker views and evaluates our operations. Segment operating results are regularly reviewed by the chief operating decision maker to make decisions about resources to be allocated to each segment and to assess performance. Other factors, including market separation and customer specific applications, go-to-market channels, products and services and manufacturing are considered in determining the formation of these operating segments.
Segment Reporting, Additional Information about Entity's Reportable Segments | The Communications Solutions Group serves customers spanning the worldwide commercial communications and aerospace, defense and government end markets. The group provides electronic design and test software, instruments, systems and related services used in the simulation, design, validation, manufacturing, installation and optimization of electronic equipment. The Electronic Industrial Solutions Group provides test and measurement solutions and related services across a broad set of electronic industrial end markets, focusing on high-value applications in the automotive and energy industry and measurement solutions for consumer electronics, education, general electronics design and manufacturing, and semiconductor design and manufacturing. The group provides electronic design and test software, instruments and systems and related services used in the simulation, design, validation, manufacturing, installation and optimization of electronic equipment. The Ixia Solutions Group helps customers design, validate and optimize the performance and security resilience of their networks and associated components and applications. Network test, network visibility and security solutions help organizations and their customers strengthen their physical and virtual networks. The group’s solutions consist of software applications and services, including warranty and maintenance offerings, and high-performance hardware platforms.
Description of Effect on Previously Reported Segment Information for Change in Composition of Reportable Segments | In 2019 we completed an organizational change to align our services business with our customer-solutions-oriented, go-to-market strategy as reflected by our Keysight Leadership Model ("KLM"). This change was made to fully reflect our services delivery within the markets served and further enable the growth of our services solutions portfolio. Prior period segment results were revised to conform to the presentation. As a result, Keysight has three segments: Communications Solutions Group, Electronic Industrial Solutions Group and Ixia Solutions Group. The organizational structure continues to include centralized enterprise functions that provide support across the groups.

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- Definition Additional information about the entity or its reportable segments that may contribute to an understanding of the enterprise. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6374474&loc=d3e8352-108598 + Details
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- Definition Disclosure about a restatement of previous periods' segment information resulting from a change in the composition of the entity's reportable segments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 35 -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8984-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8981-108599 + Details
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- Definition Description of the factors used to identify reportable segments, including the basis of organization (for example, whether management has chosen to organize the enterprise around differences in products and services, geographic areas, regulatory environments, or a combination of factors and whether operating segments have been aggregated to reportable segments). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8721-108599 + 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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