Stock-Based Compensation - Stock Compensation Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2023	Apr. 30, 2022
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense before taxes	$ 143,258	$ 110,061	$ 277,485	$ 205,832
Income tax benefit	(23,193)	(17,852)	(44,925)	(33,386)
Stock-based compensation expense after taxes	120,065	92,209	232,560	172,446
Cost of products
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense before taxes	16,895	13,078	32,924	24,285
Cost of maintenance and service
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense before taxes	7,531	5,893	14,686	10,476
Research and development expense
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense before taxes	75,355	58,109	144,586	107,649
Sales and marketing expense
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense before taxes	26,937	19,291	51,844	37,092
General and administrative expense
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense before taxes	$ 16,540	$ 13,690	$ 33,445	$ 26,330