Other Liabilities and Commitments - Other current liabilities (Details) - USD ($) $ in Millions	Jul. 31, 2023	Jul. 31, 2022
Commitments and Contingencies Disclosure [Abstract]
Executive deferred compensation plan liabilities	$ 171	$ 147
Current portion of operating lease liabilities	89	84
Sales, property, and other taxes	45	40
Reserve for returns, credits, and promotional discounts	32	31
Accrued settlement for state attorneys general	0	141
Other	111	128
Total other current liabilities	$ 448	$ 571