Equity Award Plans (Allocation of Share-Based Compensation Expense) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Apr. 30, 2026	Apr. 30, 2025	Apr. 30, 2026	Apr. 30, 2025
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Total share-based compensation	$ 684	$ 326	$ 1,355	$ 941
Research and development
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Total share-based compensation	206	134	477	411
Sales and marketing
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Total share-based compensation	188	92	388	258
General and administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Total share-based compensation	238	67	372	173
Cost of product revenue \| Cost of subscription and support revenue
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Total share-based compensation	2	1	4	4
Cost of subscription and support revenue \| Cost of subscription and support revenue
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Total share-based compensation	$ 50	$ 32	$ 114	$ 95