Fair Value of Non-marketable Equity Securities - Narrative (Details) $ in Millions |
3 Months Ended | ||
|---|---|---|---|
|
Apr. 27, 2025
investment
|
Oct. 26, 2025
USD ($)
|
Oct. 27, 2024
USD ($)
|
|
| Fair Value Disclosures [Abstract] | |||
| Number of investments reclassified | investment | 1 | ||
| Cumulative gross unrealized gains | $ 1,400 | $ 374 | |
| Cumulative gross losses and impairments | $ (167) | $ 74 |