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Income Taxes - Additional information (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 31, 2026	Jul. 31, 2025	Jul. 31, 2024	Jul. 31, 2023
Operating Loss Carryforwards [Line Items]
Shortfalls (excess tax benefits) related to share-based compensation	$ 36	$ (120)	$ (153)
Valuation allowance	257	290
Increase (decrease) in valuation allowance	(33)	63
Unrecognized tax benefits	413	394	327	$ 246
Favorable net impact to income tax expense due to recognition of tax benefits	275
Liability for uncertainty in income taxes	61	61
Domestic Country
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	35
U.S. state and local
Operating Loss Carryforwards [Line Items]
Shortfalls (excess tax benefits) related to share-based compensation	7	(23)	(30)
Valuation allowance	6
Operating loss carryforwards	99
Deferred tax asset net operating loss carryforward	6
Foreign Tax Authority
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	18
All Income Tax Jurisdictions
Operating Loss Carryforwards [Line Items]
Shortfalls (excess tax benefits) related to share-based compensation	43	$ (143)	$ (183)
Research Tax Credit Carryforward \| U.S. state and local
Operating Loss Carryforwards [Line Items]
Deferred tax assets, tax credit carryforwards	$ 415