Investments -Schedule of Available-for-Sale Debt Securities (Details) - USD ($) $ in Millions	Jan. 28, 2023	Jan. 29, 2022
Debt Securities, Available-for-sale [Line Items]
Total investment in debt securities	$ 9.8	$ 12.1
Unrealized Gain (Loss)	(0.2)	0.2
Fair Value	9.6	12.3
US Treasury securities
Debt Securities, Available-for-sale [Line Items]
Total investment in debt securities	5.8	4.5
Unrealized Gain (Loss)	(0.1)	0.0
Fair Value	5.7	4.5
US government agency securities
Debt Securities, Available-for-sale [Line Items]
Total investment in debt securities	0.5	2.0
Unrealized Gain (Loss)	0.0	0.0
Fair Value	0.5	2.0
Corporate bonds and notes
Debt Securities, Available-for-sale [Line Items]
Total investment in debt securities	3.5	5.6
Unrealized Gain (Loss)	(0.1)	0.2
Fair Value	$ 3.4	$ 5.8