Financial Instruments - Amortized Cost and Estimated Fair Value (Details) - USD ($)	3 Months Ended		9 Months Ended
	Nov. 05, 2023	Nov. 06, 2022	Nov. 05, 2023	Nov. 06, 2022
Amortized Cost
Due within one year	$ 405,765,000		$ 405,765,000
Due in one to five years	423,560,000		423,560,000
Due in five to ten years	765,000		765,000
Amortized Cost	830,090,000		830,090,000
Fair Value
Due within one year	400,902,000		400,902,000
Due in one to five years	420,200,000		420,200,000
Due in five to ten years	766,000		766,000
Total	821,868,000		821,868,000
Impairment charge for unrealized losses	$ 0	$ 0	$ 0	$ 0