Segment Disclosure - Schedule of Segment Reporting Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 31, 2024	Jul. 31, 2023	Jul. 31, 2024	Jul. 31, 2023
Segment Reporting Information [Line Items]
Total revenue	$ 1,525,749	$ 1,354,390	$ 4,491,450	$ 3,850,631
Adjusted operating income	360,211	300,076	1,044,909	849,074
Operating Segments
Segment Reporting Information [Line Items]
Adjusted operating income	$ 610,589	$ 492,791	$ 1,758,823	$ 1,380,537
Adjusted operating margin	40.00%	36.00%	39.00%	36.00%
Operating Segments | Design Automation:
Segment Reporting Information [Line Items]
Total revenue	$ 1,062,666	$ 1,004,156	$ 3,102,938	$ 2,821,570
Adjusted operating income	$ 440,864	$ 410,023	$ 1,218,574	$ 1,102,837
Adjusted operating margin	41.00%	41.00%	39.00%	39.00%
Operating Segments | Design IP:
Segment Reporting Information [Line Items]
Total revenue	$ 463,083	$ 350,234	$ 1,388,512	$ 1,029,061
Adjusted operating income	$ 169,725	$ 82,768	$ 540,249	$ 277,700
Adjusted operating margin	37.00%	24.00%	39.00%	27.00%