Leases - Lease Cost (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 31, 2025	Jul. 31, 2024	Jul. 31, 2023
Leases [Abstract]
Operating lease costs	$ 484	$ 440	$ 390
Variable lease costs	107	92	85
Short-term lease costs	33	28	23
Total lease costs	$ 624	$ 560	$ 498