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SEGMENT INFORMATION (General) (Details)
 12 Months Ended
Oct. 31, 2020
Segment Reporting [Abstract]  
Number of Reportable Segments 2
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's solutions consist of electronic design and test software, electronic measurement instruments, systems and related services. These solutions are used in the simulation, design, validation, manufacturing, installation and optimization of electronic equipment and networks. 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, electronic measurement instruments and systems and related services used in the simulation, design, validation, manufacturing the recent acquisition of Eggplant, a leading software test automation company, we now have the ability to provide automated software test capabilities that include artificial intelligence (AI) and machine learning to automatically identify, build and execute tests most critical to digital business success and a strong customer experience.