Goodwill and Intangible Assets - Schedule of Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023
Goodwill [Roll Forward]
Beginning Balance	$ 3,346,065	$ 3,121,071
Additions	96,142	229,351
Adjustments	170
Effect of foreign currency translation	6,473	(4,357)
Ending balance	3,448,850	3,346,065
Design Automation
Goodwill [Roll Forward]
Beginning Balance	2,400,682	2,176,337
Additions	61,803	229,351
Adjustments	170
Effect of foreign currency translation	6,602	(5,006)
Ending balance	2,469,257	2,400,682
Design IP
Goodwill [Roll Forward]
Beginning Balance	945,383	944,734
Additions	34,339	0
Adjustments	0
Effect of foreign currency translation	(129)	649
Ending balance	$ 979,593	$ 945,383