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v3.20.1

Segment Disclosure - Schedule of Segment Reporting Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Apr. 30, 2020 | Apr. 30, 2019 | Apr. 30, 2020 | Apr. 30, 2019
Segment Reporting Information [Line Items] |  |  |  |
Total revenue | $ 861,327 | $ 836,242 | $ 1,695,708 | $ 1,656,643
Adjusted operating income | 125,895 | 115,502 | 213,411 | 262,916
Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Adjusted operating income | $ 221,404 | $ 209,836 | $ 408,337 | $ 410,788
Adjusted operating margin | 26.00% | 25.00% | 24.00% | 25.00%
Operating Segments | Semiconductor & System Design: |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenue | $ 773,065 | $ 753,055 | $ 1,521,809 | $ 1,490,961
Adjusted operating income | $ 209,692 | $ 201,406 | $ 388,543 | $ 396,724
Adjusted operating margin | 27.00% | 27.00% | 26.00% | 27.00%
Operating Segments | Software Integrity: |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenue | $ 88,262 | $ 83,187 | $ 173,899 | $ 165,682
Adjusted operating income | $ 11,712 | $ 8,430 | $ 19,794 | $ 14,064
Adjusted operating margin | 13.00% | 10.00% | 11.00% | 8.00%

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