Segment Disclosure - Schedule of Segment Reporting Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2022	Apr. 30, 2021	Apr. 30, 2022	Apr. 30, 2021
Segment Reporting Information [Line Items]
Total revenue	$ 1,279,229	$ 1,024,323	$ 2,549,484	$ 1,994,644
Adjusted operating income	363,701	194,231	710,737	342,579
Operating Segments
Segment Reporting Information [Line Items]
Adjusted operating income	$ 470,153	$ 317,240	$ 929,544	$ 604,060
Adjusted operating margin	37.00%	31.00%	36.00%	30.00%
Operating Segments | Semiconductor & System Design:
Segment Reporting Information [Line Items]
Total revenue	$ 1,166,377	$ 930,427	$ 2,329,071	$ 1,808,795
Adjusted operating income	$ 457,128	$ 308,816	$ 904,520	$ 587,692
Adjusted operating margin	39.00%	33.00%	39.00%	32.00%
Operating Segments | Software Integrity:
Segment Reporting Information [Line Items]
Total revenue	$ 112,852	$ 93,896	$ 220,413	$ 185,849
Adjusted operating income	$ 13,025	$ 8,424	$ 25,024	$ 16,368
Adjusted operating margin	12.00%	9.00%	11.00%	9.00%