Marketable Securities - Schedule of Gross Unrealized Losses and Fair Value by Major Security Type (Details) - USD ($) $ in Thousands	Sep. 27, 2025	Dec. 28, 2024
Marketable Securities [Line Items]
Gross Unrealized Losses Less than 12 Consecutive Months	$ (2,248)	$ (4,993)
Fair Value Less than 12 Consecutive Months	296,777	419,246
Gross Unrealized Losses 12 Consecutive Months or Longer	(10,686)	(33,696)
Fair Value 12 Consecutive Months or Longer	540,354	931,764
Gross Unrealized Losses, Total	(12,934)	(38,689)
Fair Value, Total	837,131	1,351,010
Agency securities [Member]
Marketable Securities [Line Items]
Gross Unrealized Losses Less than 12 Consecutive Months	(101)	(125)
Fair Value Less than 12 Consecutive Months	8,230	24,153
Gross Unrealized Losses 12 Consecutive Months or Longer	(154)	(352)
Fair Value 12 Consecutive Months or Longer	6,846	6,647
Gross Unrealized Losses, Total	(255)	(477)
Fair Value, Total	15,076	30,800
Mortgage-backed securities [Member]
Marketable Securities [Line Items]
Gross Unrealized Losses Less than 12 Consecutive Months	(205)	(137)
Fair Value Less than 12 Consecutive Months	17,569	9,803
Gross Unrealized Losses 12 Consecutive Months or Longer	(1,429)	(4,238)
Fair Value 12 Consecutive Months or Longer	15,564	29,421
Gross Unrealized Losses, Total	(1,634)	(4,375)
Fair Value, Total	33,133	39,224
Corporate debt securities [Member]
Marketable Securities [Line Items]
Gross Unrealized Losses Less than 12 Consecutive Months	(1,745)	(4,503)
Fair Value Less than 12 Consecutive Months	256,881	350,289
Gross Unrealized Losses 12 Consecutive Months or Longer	(5,603)	(19,334)
Fair Value 12 Consecutive Months or Longer	350,324	667,176
Gross Unrealized Losses, Total	(7,348)	(23,837)
Fair Value, Total	607,205	1,017,465
Municipal securities [Member]
Marketable Securities [Line Items]
Gross Unrealized Losses Less than 12 Consecutive Months	(194)	(228)
Fair Value Less than 12 Consecutive Months	13,582	35,001
Gross Unrealized Losses 12 Consecutive Months or Longer	(3,451)	(9,679)
Fair Value 12 Consecutive Months or Longer	166,593	226,901
Gross Unrealized Losses, Total	(3,645)	(9,907)
Fair Value, Total	180,175	261,902
Other [Member]
Marketable Securities [Line Items]
Gross Unrealized Losses Less than 12 Consecutive Months	(3)	0
Fair Value Less than 12 Consecutive Months	515	0
Gross Unrealized Losses 12 Consecutive Months or Longer	(49)	(93)
Fair Value 12 Consecutive Months or Longer	1,027	1,619
Gross Unrealized Losses, Total	(52)	(93)
Fair Value, Total	$ 1,542	$ 1,619

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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