Income Taxes - Components of deferred tax assets and liabilities (Details) - USD ($) $ in Millions	Jul. 31, 2024	Jul. 31, 2023
Deferred tax assets:
Accruals and reserves not currently deductible	$ 47	$ 31
Capitalized research and development	1,321	667
Operating lease liabilities	137	153
Accrued and deferred compensation	132	90
Loss and tax credit carryforwards	204	256
Share-based compensation	117	94
Other, net	20	27
Total gross deferred tax assets	1,978	1,318
Valuation allowance	(227)	(235)
Total deferred tax assets	1,751	1,083
Deferred tax liabilities:
Operating lease right-of-use assets	105	128
Intangibles	864	840
Property and equipment	38	8
Other, net	49	47
Total deferred tax liabilities	1,056	1,023
Components of total net deferred tax assets, net of valuation allowances, as shown on our consolidated balance sheets
Long-term deferred income tax assets	698	64
Long-term deferred income tax liabilities included in other long-term obligations	(3)	(4)
Net deferred tax assets	$ 695	$ 60