Leases - Supplemental Balance Sheet (Details) - USD ($) $ in Millions	Jan. 31, 2025	Jul. 31, 2024
Leases [Abstract]
Operating lease right-of-use assets	$ 518	$ 411
Other current liabilities	59	71
Operating lease liabilities	573	458
Total operating lease liabilities	$ 632	$ 529
Operating lease, liability, current, statement of financial position	Other Liabilities, Current	Other Liabilities, Current