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Revenue - Schedule of Disaggregation of Revenue (Details) - Product Concentration Risk - Revenues	3 Months Ended		6 Months Ended
	Apr. 30, 2025	Apr. 30, 2024	Apr. 30, 2025	Apr. 30, 2024
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	66.90%	69.30%	67.10%	66.70%
Design IP
Disaggregation of Revenue [Line Items]
Revenue percentage by product group	30.00%	27.50%	30.00%	31.20%
Other
Disaggregation of Revenue [Line Items]
Revenue percentage by product group	3.10%	3.20%	2.90%	2.10%

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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