Leases - Operating Lease Balances (Details) - USD ($) $ in Millions |
Apr. 25, 2026 |
Jul. 26, 2025 |
|---|---|---|
| Leases [Abstract] | ||
| Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] | Other assets | Other assets |
| Operating lease right-of-use assets | $ 1,450 | $ 1,301 |
| Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] | Other current liabilities | Other current liabilities |
| Operating lease liabilities | $ 410 | $ 375 |
| Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] | Other long-term liabilities | Other long-term liabilities |
| Operating lease liabilities | $ 1,288 | $ 1,175 |
| Total operating lease liabilities | $ 1,698 | $ 1,550 |