Cash Equivalents and Marketable Securities - Narrative (Details) $ in Millions |
3 Months Ended | 6 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|
|
Jul. 27, 2025
USD ($)
|
Apr. 27, 2025
USD ($)
investment
|
Jul. 28, 2024
USD ($)
|
Jul. 27, 2025
USD ($)
|
Jul. 28, 2024
USD ($)
|
Jan. 26, 2025
USD ($)
|
Apr. 28, 2024
USD ($)
|
Jan. 28, 2024
USD ($)
|
|
| Summary of cash equivalents and marketable securities: | ||||||||
| Number of investments reclassified | investment | 1 | |||||||
| Fair value of non-marketable equity securities reclassified to marketable securities | $ 3,799 | $ 3,240 | $ 1,819 | $ 3,799 | $ 1,819 | $ 3,387 | $ 1,463 | $ 1,321 |
| Net unrealized gains on investments in publicly held equity securities | 1,900 | $ 132 | 1,700 | $ 181 | ||||
| Debt securities in a continuous loss position of twelve months or greater | 15 | 15 | $ 213 | |||||
| Publicly-held equity securities | ||||||||
| Summary of cash equivalents and marketable securities: | ||||||||
| Fair value of non-marketable equity securities reclassified to marketable securities | $ 2,800 | $ 2,800 | ||||||