Cash Equivalents and Marketable Securities - Schedule of Unrealized Losses Aggregated by Investment Category (Details) - USD ($) $ in Millions |
Apr. 27, 2025 |
Jan. 26, 2025 |
|---|---|---|
| Estimated Fair Value | ||
| Less than 12 Months | $ 9,950 | $ 12,422 |
| Gross Unrealized Loss | ||
| Less than 12 Months | (15) | (56) |
| Debt securities issued by the U.S. Treasury | ||
| Estimated Fair Value | ||
| Less than 12 Months | 6,854 | 6,315 |
| Gross Unrealized Loss | ||
| Less than 12 Months | (4) | (22) |
| Corporate debt securities | ||
| Estimated Fair Value | ||
| Less than 12 Months | 2,775 | 5,291 |
| Gross Unrealized Loss | ||
| Less than 12 Months | (10) | (29) |
| Debt securities issued by U.S. government agencies | ||
| Estimated Fair Value | ||
| Less than 12 Months | 321 | 816 |
| Gross Unrealized Loss | ||
| Less than 12 Months | $ (1) | $ (5) |