Revenue - Schedule of Disaggregation of Revenue (Details) - Product Concentration Risk - Revenue	3 Months Ended		9 Months Ended
	Jul. 31, 2022	Jul. 31, 2021	Jul. 31, 2022	Jul. 31, 2021
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	50.00%	55.80%	49.90%	56.20%
IP & System Integration
Disaggregation of Revenue [Line Items]
Revenue percentage by product group	39.70%	34.40%	40.70%	34.20%
Software Integrity Products & Services
Disaggregation of Revenue [Line Items]
Revenue percentage by product group	9.50%	9.30%	8.90%	9.30%
Other
Disaggregation of Revenue [Line Items]
Revenue percentage by product group	0.80%	0.50%	0.50%	0.30%