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Cash and Investments - Investments by Security Type (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 30, 2022
Debt securities available-for-sale:
Amortized Cost	$ 1,886,976	$ 1,887,060
Gross Unrealized Gains	2,571	589
Gross Unrealized Losses	(14,277)	(19,034)
Fair Value	1,875,270	1,868,615
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents
Amortized Cost	2,132,936	2,085,126
Gross Unrealized Gains	2,571	589
Gross Unrealized Losses	(14,277)	(19,034)
Fair Value	2,121,230	2,066,681
Commercial paper
Debt securities available-for-sale:
Amortized Cost	684,917	722,018
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	684,917	722,018
Corporate bonds
Debt securities available-for-sale:
Amortized Cost	823,100	810,439
Gross Unrealized Gains	2,105	541
Gross Unrealized Losses	(10,274)	(13,132)
Fair Value	814,931	797,848
U.S. Treasury and government-sponsored enterprises
Debt securities available-for-sale:
Amortized Cost	367,479	338,218
Gross Unrealized Gains	466	48
Gross Unrealized Losses	(3,859)	(5,679)
Fair Value	364,086	332,587
Municipal bonds
Debt securities available-for-sale:
Amortized Cost	11,480	16,385
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(144)	(223)
Fair Value	11,336	16,162
Cash
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents
Amortized Cost	64	41
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	64	41
Money market funds
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents
Amortized Cost	165,941	94,344
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	165,941	94,344
Certificates of deposit
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents
Amortized Cost	79,955	103,681
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	$ 79,955	$ 103,681

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