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Cash and Investments - Investments by Security Type (Details) - USD ($) $ in Thousands	Sep. 29, 2023	Dec. 30, 2022
Debt securities available-for-sale:
Amortized Cost	$ 1,666,014	$ 1,887,060
Gross Unrealized Gains	127	589
Gross Unrealized Losses	(17,942)	(19,034)
Fair Value	1,648,199	1,868,615
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents
Amortized Cost	1,932,882	2,085,126
Gross Unrealized Gains	127	589
Gross Unrealized Losses	(17,942)	(19,034)
Fair Value	1,915,067	2,066,681
Commercial paper
Debt securities available-for-sale:
Amortized Cost	386,363	722,018
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	386,363	722,018
Corporate bonds
Debt securities available-for-sale:
Amortized Cost	832,075	810,439
Gross Unrealized Gains	123	541
Gross Unrealized Losses	(12,103)	(13,132)
Fair Value	820,095	797,848
U.S. Treasury and government-sponsored enterprises
Debt securities available-for-sale:
Amortized Cost	441,576	338,218
Gross Unrealized Gains	4	48
Gross Unrealized Losses	(5,754)	(5,679)
Fair Value	435,826	332,587
Municipal bonds
Debt securities available-for-sale:
Amortized Cost	6,000	16,385
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(85)	(223)
Fair Value	5,915	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	182,464	94,344
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	182,464	94,344
Certificates of deposit
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents
Amortized Cost	84,404	103,681
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	$ 84,404	$ 103,681

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