Goodwill and Intangible Assets - Additional Information (Details) - USD ($)		3 Months Ended	12 Months Ended
	Jul. 17, 2025	Oct. 31, 2024	Oct. 31, 2025	Oct. 31, 2024	Oct. 31, 2023
Goodwill [Line Items]
Goodwill additions			$ 23,442,889,000	$ 96,142,000
Goodwill impairment loss			0	0	$ 0
Impairment of intangible assets		$ 53,500,000		53,500,000
Impairment of intangible assets, location		Amortization of acquired intangible assets
Long-lived assets impairment loss			$ 0	$ 0	$ 0
Ansys, Inc
Goodwill [Line Items]
Goodwill additions	$ 23,400,000,000