Business Combinations (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2024 USD ($)	Apr. 30, 2023 USD ($)	Apr. 30, 2024 USD ($) acquisition	Apr. 30, 2023 USD ($)	Oct. 31, 2023 USD ($)
Business Acquisition [Line Items]
Number of acquisitions | acquisition			2
Goodwill	$ 3,427,424		$ 3,427,424		$ 3,346,065
Transaction costs	25,300	$ 2,600	57,200	$ 5,000
Series of Individually Immaterial Business Acquisitions
Business Acquisition [Line Items]
Consideration transferred			139,500
Intangible assets	71,700		71,700
Goodwill	82,700		82,700
Net tangible liabilities	14,900		14,900
Goodwill, expected tax deductible amount	0		0
Series of Individually Immaterial Business Acquisitions | Design Automation reporting unit
Business Acquisition [Line Items]
Goodwill	47,900		47,900
Series of Individually Immaterial Business Acquisitions | Design IP reporting unit
Business Acquisition [Line Items]
Goodwill	$ 34,800		$ 34,800