Marketable Securities - Schedule of Marketable Securities Classified as Available-for-sale Securities (Details) - USD ($) $ in Thousands	Mar. 28, 2026	Dec. 27, 2025
Marketable Securities [Line Items]
Amortized Cost, Total	$ 2,036,219	$ 1,850,656
Gross Unrealized Gains	6,374	14,168
Gross Unrealized Losses	(19,236)	(8,693)
Fair Value	2,023,357	1,856,131
U.S. Treasury securities [Member] \| Fair Value, Level 2 [Member]
Marketable Securities [Line Items]
Amortized Cost, Total	11,335	11,310
Gross Unrealized Gains	24	54
Gross Unrealized Losses	(122)	(3)
Fair Value	11,237	11,361
Agency securities [Member] \| Fair Value, Level 2 [Member]
Marketable Securities [Line Items]
Amortized Cost, Total	91,680	79,794
Gross Unrealized Gains	18	63
Gross Unrealized Losses	(1,050)	(316)
Fair Value	90,648	79,541
Mortgage-backed securities [Member] \| Fair Value, Level 2 [Member]
Marketable Securities [Line Items]
Amortized Cost, Total	83,834	86,251
Gross Unrealized Gains	66	567
Gross Unrealized Losses	(1,631)	(1,508)
Fair Value	82,269	85,310
Corporate Debt Securities [Member] \| Fair Value, Level 2 [Member]
Marketable Securities [Line Items]
Amortized Cost, Total	1,643,629	1,454,326
Gross Unrealized Gains	5,986	12,809
Gross Unrealized Losses	(14,278)	(4,624)
Fair Value	1,635,337	1,462,511
Municipal securities [Member] \| Fair Value, Level 2 [Member]
Marketable Securities [Line Items]
Amortized Cost, Total	204,661	217,629
Gross Unrealized Gains	280	675
Gross Unrealized Losses	(2,127)	(2,201)
Fair Value	202,814	216,103
Other [Member] \| Fair Value, Level 2 [Member]
Marketable Securities [Line Items]
Amortized Cost, Total	1,080	1,346
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(28)	(41)
Fair Value	$ 1,052	$ 1,305

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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