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Revenue - Schedule of Disaggregation of Revenue (Details) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Apr. 30, 2021 | Apr. 30, 2020 | Apr. 30, 2021 | Apr. 30, 2020
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue percentage by product group | 100.00% | 100.00% | 100.00% | 100.00%
EDA |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue percentage by product group | 57.40% | 59.40% | 56.30% | 59.20%
IP & System Integration |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue percentage by product group | 33.10% | 30.20% | 34.00% | 30.40%
Software Integrity Products & Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue percentage by product group | 9.20% | 10.20% | 9.30% | 10.30%
Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue percentage by product group | 0.30% | 0.20% | 0.40% | 0.10%

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