Leases - Assets and Liabilities (Details) - USD ($) $ in Millions	Jul. 31, 2024	Jul. 31, 2023
Leases [Abstract]
Operating lease right-of-use assets	$ 1,565	$ 1,474
Current portion of operating lease liabilities	395	366
Long-term portion of operating lease liabilities	1,198	1,126
Total lease liabilities	$ 1,593	$ 1,492