Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Feb. 01, 2026	Feb. 02, 2025	Jan. 28, 2024	Jan. 29, 2023
Deferred tax assets:
Operating lease liabilities	$ 144.3	$ 139.2
Inventories	14.8	13.2
Share-based compensation	25.2	12.5
Accrued expenses and reserves	18.8	15.5
Net operating loss carryforwards	54.6	73.7
Tax credit carryforwards	86.8	60.5
Capitalized research expenditures	128.2	164.0
Others	14.2	7.6
Total deferred tax assets	486.9	486.2
Less: valuation allowance	27.4	21.8	$ 281.1	$ 230.7
Deferred tax assets, net of valuation allowance	459.5	464.4
Deferred tax liabilities:
Operating lease right-of-use assets	121.2	116.9
Depreciation	94.9	80.5
Prepaids and Others	11.2	9.5
Total deferred tax liabilities	227.3	206.9
Net deferred tax assets	$ 232.2	$ 257.5

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