Summary of Significant Accounting Policies - Fair value of financial instruments (Details) - USD ($) $ in Thousands	May 02, 2026	Jan. 31, 2026	May 03, 2025
Significant Accounting Policies [Line Items]
Amortized Cost			$ 196,529
Gross Unrealized Gains			0
Gross Unrealized Losses			203
Fair Market Value			196,326
Fair Value, Inputs, Level 1
Significant Accounting Policies [Line Items]
Cash equivalents	$ 605,000	$ 700,400	400,200
Short-term:
Significant Accounting Policies [Line Items]
Amortized Cost	474,370	208,508
Gross Unrealized Gains	5	0
Gross Unrealized Losses	699	64
Fair Market Value	473,676	208,444
Corporate bonds \| Fair Value, Inputs, Level 2
Significant Accounting Policies [Line Items]
Amortized Cost	474,370	208,508	196,529
Gross Unrealized Gains	5	0	0
Gross Unrealized Losses	699	64	203
Fair Market Value	$ 473,676	$ 208,444	$ 196,326

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Amount, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

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Amount of accumulated unrecognized gain on investment in debt security measured at amortized cost (held-to-maturity).

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Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity).

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