Financial Instruments - Gross Unrealized Losses and Fair Values (Details) - USD ($) $ in Thousands	Aug. 07, 2022	Feb. 06, 2022
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Fair Value, Less than 12 months	$ 653,198	$ 637,548
Unrealized Loss, Less than 12 months	(16,647)	(7,625)
Fair Value, Greater than 12 months	43,881	1,182
Unrealized Loss, Greater than 12 months	(1,650)	(23)
Fair Value, Total	697,079	638,730
Unrealized Loss, Total	(18,297)	(7,648)
U.S. government treasury notes
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Fair Value, Less than 12 months	213,567	193,359
Unrealized Loss, Less than 12 months	(4,289)	(2,176)
Fair Value, Greater than 12 months	19,827	0
Unrealized Loss, Greater than 12 months	(641)	0
Fair Value, Total	233,394	193,359
Unrealized Loss, Total	(4,930)	(2,176)
U.S. government agencies
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Fair Value, Less than 12 months	23,322	24,388
Unrealized Loss, Less than 12 months	(466)	(193)
Fair Value, Greater than 12 months	0	0
Unrealized Loss, Greater than 12 months	0	0
Fair Value, Total	23,322	24,388
Unrealized Loss, Total	(466)	(193)
Corporate debt securities
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Fair Value, Less than 12 months	372,210	374,223
Unrealized Loss, Less than 12 months	(10,651)	(4,708)
Fair Value, Greater than 12 months	20,974	1,182
Unrealized Loss, Greater than 12 months	(879)	(23)
Fair Value, Total	393,184	375,405
Unrealized Loss, Total	(11,530)	(4,731)
Foreign government bonds
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Fair Value, Less than 12 months	4,732	4,098
Unrealized Loss, Less than 12 months	(68)	(17)
Fair Value, Greater than 12 months	0	0
Unrealized Loss, Greater than 12 months	0	0
Fair Value, Total	4,732	4,098
Unrealized Loss, Total	(68)	(17)
Asset-backed securities
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Fair Value, Less than 12 months	37,938	37,608
Unrealized Loss, Less than 12 months	(1,092)	(453)
Fair Value, Greater than 12 months	739	0
Unrealized Loss, Greater than 12 months	(31)	0
Fair Value, Total	38,677	37,608
Unrealized Loss, Total	(1,123)	(453)
Municipal bonds
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Fair Value, Less than 12 months	1,429	3,872
Unrealized Loss, Less than 12 months	(81)	(78)
Fair Value, Greater than 12 months	2,341	0
Unrealized Loss, Greater than 12 months	(99)	0
Fair Value, Total	3,770	3,872
Unrealized Loss, Total	$ (180)	$ (78)