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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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