Leases - Supplemental Balance Sheet (Details) - USD ($) $ in Millions	Jan. 31, 2024	Jul. 31, 2023
Leases [Abstract]
Operating lease right-of-use assets	$ 444	$ 469
Other current liabilities	81	89
Operating lease liabilities	473	480
Total operating lease liabilities	$ 554	$ 569
Operating lease, liability, current, statement of financial position	Other Liabilities, Current