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Cash and Investments - Investments by Security Type (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 30, 2022
Debt securities available-for-sale:
Amortized Cost	$ 1,899,454	$ 1,887,060
Gross Unrealized Gains	183	589
Gross Unrealized Losses	(18,549)	(19,034)
Fair Value	1,881,088	1,868,615
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents
Amortized Cost	2,123,796	2,085,126
Gross Unrealized Gains	183	589
Gross Unrealized Losses	(18,549)	(19,034)
Fair Value	2,105,430	2,066,681
Commercial paper
Debt securities available-for-sale:
Amortized Cost	646,523	722,018
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	646,523	722,018
Corporate bonds
Debt securities available-for-sale:
Amortized Cost	828,044	810,439
Gross Unrealized Gains	174	541
Gross Unrealized Losses	(12,050)	(13,132)
Fair Value	816,168	797,848
U.S. Treasury and government-sponsored enterprises
Debt securities available-for-sale:
Amortized Cost	413,747	338,218
Gross Unrealized Gains	9	48
Gross Unrealized Losses	(6,359)	(5,679)
Fair Value	407,397	332,587
Municipal bonds
Debt securities available-for-sale:
Amortized Cost	11,140	16,385
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(140)	(223)
Fair Value	11,000	16,162
Cash
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents
Amortized Cost		41
Gross Unrealized Gains		0
Gross Unrealized Losses		0
Fair Value		41
Money market funds
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents
Amortized Cost	124,270	94,344
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	124,270	94,344
Certificates of deposit
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents
Amortized Cost	100,072	103,681
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	$ 100,072	$ 103,681

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