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Investments - Maturities of Available-for-Sale Debt Investments (Details) - USD ($) $ in Millions | Jan. 25, 2025 | Jul. 27, 2024
--- | --- | ---
Amortized Cost |  |
Within 1 year | $ 3,238 |
After 1 year through 5 years | 4,101 |
Mortgage-backed securities with no single maturity | 847 |
Amortized Cost | 8,186 | $ 10,212
Fair Value |  |
Within 1 year | 3,207 |
After 1 year through 5 years | 4,015 |
Mortgage-backed securities with no single maturity | 736 |
Fair Value | $ 7,958 | $ 9,865

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