Marketable Securities - Schedule of Marketable Securities Classified as Available-for-sale Securities (Details) - USD ($) $ in Thousands	Sep. 27, 2025	Dec. 28, 2024
Marketable Securities [Line Items]
Amortized Cost, Total	$ 1,844,002	$ 1,656,724
Gross Unrealized Gains	12,341	1,566
Gross Unrealized Losses	(12,934)	(38,689)
Fair Value	1,843,409	1,619,601
U.S. Treasury securities [Member] \| Fair Value, Level 2 [Member]
Marketable Securities [Line Items]
Amortized Cost, Total	3,300	4,930
Gross Unrealized Gains	51	8
Gross Unrealized Losses	0	0
Fair Value	3,351	4,938
Agency securities [Member] \| Fair Value, Level 2 [Member]
Marketable Securities [Line Items]
Amortized Cost, Total	53,811	42,236
Gross Unrealized Gains	69	38
Gross Unrealized Losses	(255)	(477)
Fair Value	53,625	41,797
Mortgage-backed securities [Member] \| Fair Value, Level 2 [Member]
Marketable Securities [Line Items]
Amortized Cost, Total	94,262	43,599
Gross Unrealized Gains	485	0
Gross Unrealized Losses	(1,634)	(4,375)
Fair Value	93,113	39,224
Corporate Debt Securities [Member] \| Fair Value, Level 2 [Member]
Marketable Securities [Line Items]
Amortized Cost, Total	1,447,404	1,281,981
Gross Unrealized Gains	11,117	1,498
Gross Unrealized Losses	(7,348)	(23,837)
Fair Value	1,451,173	1,259,642
Municipal securities [Member] \| Fair Value, Level 2 [Member]
Marketable Securities [Line Items]
Amortized Cost, Total	243,631	281,295
Gross Unrealized Gains	619	21
Gross Unrealized Losses	(3,645)	(9,907)
Fair Value	240,605	271,409
Other [Member] \| Fair Value, Level 2 [Member]
Marketable Securities [Line Items]
Amortized Cost, Total	1,594	2,683
Gross Unrealized Gains	0	1
Gross Unrealized Losses	(52)	(93)
Fair Value	$ 1,542	$ 2,591

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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