Income Taxes - Components of deferred tax assets and liabilities (Details) - USD ($) $ in Millions	Jul. 31, 2022	Jul. 31, 2021
Deferred tax assets:
Accruals and reserves not currently deductible	$ 84	$ 48
Operating lease liabilities	168	113
Accrued and deferred compensation	84	132
Loss and tax credit carryforwards	224	282
Intangible assets	25	33
Share-based compensation	97	59
Other, net	23	16
Total gross deferred tax assets	705	683
Valuation allowance	(244)	(205)
Total deferred tax assets	461	478
Deferred tax liabilities:
Operating lease right-of-use assets	149	96
Intangibles	868	844
Property and equipment	9	10
Other, net	43	45
Total deferred tax liabilities	1,069	995
Net deferred tax assets (liabilities)	(608)	(517)
Deferred Tax Assets, Net [Abstract]
Long-term deferred income tax assets	11	8
Long-term deferred income tax liabilities	$ (619)	$ (525)