Segment Disclosure - Schedule of Segment Reporting Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2024	Apr. 30, 2023	Apr. 30, 2024	Apr. 30, 2023
Segment Reporting Information [Line Items]
Total revenue	$ 1,454,712	$ 1,262,744	$ 2,965,701	$ 2,496,241
Adjusted operating income	332,072	292,375	684,698	548,998
Operating Segments
Segment Reporting Information [Line Items]
Adjusted operating income	$ 543,042	$ 434,981	$ 1,148,234	$ 887,746
Adjusted operating margin	37.00%	34.00%	39.00%	36.00%
Operating Segments | Design Automation:
Segment Reporting Information [Line Items]
Total revenue	$ 1,054,933	$ 927,568	$ 2,040,272	$ 1,817,414
Adjusted operating income	$ 418,245	$ 353,439	$ 777,710	$ 692,814
Adjusted operating margin	40.00%	38.00%	38.00%	38.00%
Operating Segments | Design IP:
Segment Reporting Information [Line Items]
Total revenue	$ 399,779	$ 335,176	$ 925,429	$ 678,827
Adjusted operating income	$ 124,797	$ 81,542	$ 370,524	$ 194,932
Adjusted operating margin	31.00%	24.00%	40.00%	29.00%