Segment Disclosure - Schedule of Segment Reporting Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Segment Reporting Information [Line Items]
Revenue	$ 6,127,436	$ 5,318,014	$ 4,615,714
Adjusted operating income	1,355,711	1,273,239	1,148,714
Design Automation
Segment Reporting Information [Line Items]
Revenue	4,221,122	3,775,288	3,300,173
Adjusted operating income	$ 1,631,885	$ 1,413,926	$ 1,176,101
Adjusted operating margin	39.00%	37.00%	36.00%
Design IP
Segment Reporting Information [Line Items]
Revenue	$ 1,906,314	$ 1,542,726	$ 1,315,541
Adjusted operating income	$ 730,174	$ 514,101	$ 403,798
Adjusted operating margin	38.00%	33.00%	31.00%
Operating Segments
Segment Reporting Information [Line Items]
Adjusted operating income	$ 2,362,059	$ 1,928,027	$ 1,579,899
Adjusted operating margin	39.00%	36.00%	34.00%