Non-marketable Equity Securities - Carrying Value of Non-marketable Equity Securities (Details) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Jan. 25, 2026 |
Jan. 26, 2025 |
|
| Investments, Debt and Equity Securities [Abstract] | ||
| Balance at beginning of period | $ 3,387 | $ 1,321 |
| Net additions | 17,444 | 1,309 |
| Unrealized gains | 2,369 | 816 |
| Reclassification | (848) | 0 |
| Impairments and unrealized losses | (101) | (59) |
| Balance at end of period | $ 22,251 | $ 3,387 |