Segment Disclosure - Schedule of Segment Reporting Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2025	Oct. 31, 2024	Oct. 31, 2023
Segment Reporting Information [Line Items]
Revenue	$ 7,054,178	$ 6,127,436	$ 5,318,014
Cost of revenue and operating expenses	4,421,327	3,765,377	3,389,987
Adjusted operating income	914,927	1,355,711	1,273,239
Design Automation
Segment Reporting Information [Line Items]
Revenue	5,302,340	4,221,122	3,775,288
Cost of revenue and operating expenses	3,088,814	2,589,237	2,361,362
Adjusted operating income	$ 2,213,526	$ 1,631,885	$ 1,413,926
Adjusted operating margin	42.00%	39.00%	37.00%
Design IP
Segment Reporting Information [Line Items]
Revenue	$ 1,751,838	$ 1,906,314	$ 1,542,726
Cost of revenue and operating expenses	1,332,513	1,176,140	1,028,625
Adjusted operating income	$ 419,325	$ 730,174	$ 514,101
Adjusted operating margin	24.00%	38.00%	33.00%
Operating Segments
Segment Reporting Information [Line Items]
Adjusted operating income	$ 2,632,851	$ 2,362,059	$ 1,928,027
Adjusted operating margin	37.00%	39.00%	36.00%