Leases - Operating Lease Balances (Details) - USD ($) $ in Millions	Jan. 28, 2023	Jul. 30, 2022
Leases [Abstract]
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets
Operating lease right-of-use assets	$ 978	$ 1,003
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Other current liabilities	Other current liabilities
Operating lease liabilities	$ 337	$ 322
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other long-term liabilities	Other long-term liabilities
Operating lease liabilities	$ 691	$ 724
Total operating lease liabilities	$ 1,028	$ 1,046