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Cash and Investments - Investments by Security Type (Details) - USD ($) $ in Thousands	Dec. 29, 2023	Dec. 30, 2022
Debt securities available-for-sale:
Amortized Cost	$ 1,501,923	$ 1,887,060
Gross Unrealized Gains	2,076	589
Gross Unrealized Losses	(6,576)	(19,034)
Fair Value	1,497,423	1,868,615
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents
Amortized Cost	1,728,519	2,085,126
Gross Unrealized Gains	2,076	589
Gross Unrealized Losses	(6,576)	(19,034)
Fair Value	1,724,019	2,066,681
Commercial paper
Debt securities available-for-sale:
Amortized Cost	214,016	722,018
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	214,016	722,018
Corporate bonds
Debt securities available-for-sale:
Amortized Cost	870,870	810,439
Gross Unrealized Gains	1,652	541
Gross Unrealized Losses	(4,277)	(13,132)
Fair Value	868,245	797,848
U.S. Treasury and government-sponsored enterprises
Debt securities available-for-sale:
Amortized Cost	409,157	338,218
Gross Unrealized Gains	414	48
Gross Unrealized Losses	(2,250)	(5,679)
Fair Value	407,321	332,587
Municipal bonds
Debt securities available-for-sale:
Amortized Cost	7,880	16,385
Gross Unrealized Gains	10	0
Gross Unrealized Losses	(49)	(223)
Fair Value	7,841	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	154,287	94,344
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	154,287	94,344
Certificates of deposit
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents
Amortized Cost	72,309	103,681
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	$ 72,309	$ 103,681

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