Segment Disclosure - Schedule of Segment Reporting Information (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Apr. 30, 2026	Apr. 30, 2025	Apr. 30, 2026	Apr. 30, 2025
Segment Reporting Information [Line Items]
Revenue	$ 2,275,985	$ 1,604,266	$ 4,684,783	$ 3,059,581
Adjusted operating income	120,426	376,426	323,472	628,265
Design Automation:
Segment Reporting Information [Line Items]
Revenue	1,821,776	1,122,235	3,823,594	2,142,451
Cost of revenue and operating expenses	1,032,718	663,479	2,087,004	1,279,025
Adjusted operating income	$ 789,058	$ 458,756	$ 1,736,590	$ 863,426
Adjusted operating margin	43.00%	41.00%	45.00%	40.00%
Design IP:
Segment Reporting Information [Line Items]
Revenue	$ 454,209	$ 482,031	$ 861,189	$ 917,130
Cost of revenue and operating expenses	343,551	331,517	684,411	640,069
Adjusted operating income	$ 110,658	$ 150,514	$ 176,778	$ 277,061
Adjusted operating margin	24.00%	31.00%	21.00%	30.00%
Operating Segments
Segment Reporting Information [Line Items]
Revenue	$ 2,275,985	$ 1,604,266	$ 4,684,783	$ 3,059,581
Cost of revenue and operating expenses	1,376,269	994,996	2,771,415	1,919,094
Adjusted operating income	$ 899,716	$ 609,270	$ 1,913,368	$ 1,140,487
Adjusted operating margin	40.00%	38.00%	41.00%	37.00%

The net result for the period of deducting operating expenses from operating revenues.

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details