Equity Award Plans (Allocation of Share Based Compensation Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 31, 2026	Jul. 31, 2025	Jul. 31, 2024
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Total share-based compensation	$ 1,815	$ 1,300	$ 1,079
CyberArk And Koi
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Total share-based compensation	177
Income Statement Location: us-gaap:GeneralAndAdministrativeExpense
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Total share-based compensation	448	258	124
Income Statement Location: us-gaap:GeneralAndAdministrativeExpense \| CyberArk And Koi
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Total share-based compensation	140
Income Statement Location: us-gaap:ResearchAndDevelopmentExpense
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Total share-based compensation	688	551	526
Income Statement Location: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax \| CyberArk And Koi
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Total share-based compensation	1
Income Statement Location: us-gaap:SellingAndMarketingExpense
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Total share-based compensation	513	359	301
Income Statement Location: us-gaap:SellingAndMarketingExpense \| CyberArk And Koi
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Total share-based compensation	36
Cost of product revenue \| Income Statement Location: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Total share-based compensation	5	5	7
Cost of subscription and support revenue \| Income Statement Location: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Total share-based compensation	$ 161	$ 127	$ 121