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Income Tax (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Aug. 02, 2025 | Aug. 03, 2024 | Aug. 02, 2025 | Aug. 03, 2024 | Aug. 14, 2025 | Apr. 07, 2025
Effective Income Tax Rate Reconciliation [Line Items] |  |  |  |  |  |
Provision for income taxes | $ 38.9 | $ 47.1 | $ 76.9 | $ 64.9 |  |
Disposal Group, Held-for-Sale, Not Discontinued Operations | Marvell Technology's Automotive Ethernet Business |  |  |  |  |  |
Effective Income Tax Rate Reconciliation [Line Items] |  |  |  |  |  |
Consideration for disposal |  |  |  |  |  | $ 2,500.0
Subsequent Event | Disposal Group, Held-for-Sale, Not Discontinued Operations | Marvell Technology's Automotive Ethernet Business |  |  |  |  |  |
Effective Income Tax Rate Reconciliation [Line Items] |  |  |  |  |  |
Consideration for disposal |  |  |  |  | $ 2,500.0 |

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