Marketable Securities - Schedule of Gross Unrealized Losses and Fair Value by Major Security Type (Details) - USD ($) $ in Thousands	Mar. 26, 2022	Dec. 25, 2021
Marketable Securities [Line Items]
Gross Unrealized Losses Less than 12 Consecutive Months	$ (49,876)	$ (14,438)
Fair Value Less than 12 Consecutive Months	979,951	768,737
Gross Unrealized Losses 12 Consecutive Months or Longer	(22,558)	(4,116)
Fair Value 12 Consecutive Months or Longer	275,030	129,241
Gross Unrealized Losses, Total	(72,434)	(18,554)
Fair Value, Total	1,254,981	897,978
Agency securities [Member]
Marketable Securities [Line Items]
Gross Unrealized Losses Less than 12 Consecutive Months	(487)	(110)
Fair Value Less than 12 Consecutive Months	6,513	6,890
Gross Unrealized Losses 12 Consecutive Months or Longer	0	0
Fair Value 12 Consecutive Months or Longer	0	0
Gross Unrealized Losses, Total	(487)	(110)
Fair Value, Total	6,513	6,890
Mortgage-backed securities [Member]
Marketable Securities [Line Items]
Gross Unrealized Losses Less than 12 Consecutive Months	(1,757)	(148)
Fair Value Less than 12 Consecutive Months	52,201	18,909
Gross Unrealized Losses 12 Consecutive Months or Longer	(507)	(732)
Fair Value 12 Consecutive Months or Longer	7,476	7,598
Gross Unrealized Losses, Total	(2,264)	(880)
Fair Value, Total	59,677	26,507
Corporate securities [Member]
Marketable Securities [Line Items]
Gross Unrealized Losses Less than 12 Consecutive Months	(32,386)	(9,466)
Fair Value Less than 12 Consecutive Months	669,654	499,084
Gross Unrealized Losses 12 Consecutive Months or Longer	(15,331)	(2,361)
Fair Value 12 Consecutive Months or Longer	192,402	85,033
Gross Unrealized Losses, Total	(47,717)	(11,827)
Fair Value, Total	862,056	584,117
Municipal securities [Member]
Marketable Securities [Line Items]
Gross Unrealized Losses Less than 12 Consecutive Months	(13,953)	(4,247)
Fair Value Less than 12 Consecutive Months	231,353	226,009
Gross Unrealized Losses 12 Consecutive Months or Longer	(5,778)	(617)
Fair Value 12 Consecutive Months or Longer	68,672	29,405
Gross Unrealized Losses, Total	(19,731)	(4,864)
Fair Value, Total	300,025	255,414
Other [Member]
Marketable Securities [Line Items]
Gross Unrealized Losses Less than 12 Consecutive Months	(1,293)	(467)
Fair Value Less than 12 Consecutive Months	20,230	17,845
Gross Unrealized Losses 12 Consecutive Months or Longer	(942)	(406)
Fair Value 12 Consecutive Months or Longer	6,480	7,205
Gross Unrealized Losses, Total	(2,235)	(873)
Fair Value, Total	$ 26,710	$ 25,050

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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