Marketable Securities - Schedule of Gross Unrealized Losses and Fair Value by Major Security Type (Details) - USD ($) $ in Thousands	Dec. 25, 2021	Dec. 26, 2020
Marketable Securities [Line Items]
Gross Unrealized Losses Less than 12 Consecutive Months	$ (14,438)	$ (3,863)
Fair Value Less than 12 Consecutive Months	768,737	357,878
Gross Unrealized Losses 12 Consecutive Months or Longer	(4,116)	(976)
Fair Value 12 Consecutive Months or Longer	129,241	14,173
Gross Unrealized Losses, Total	(18,554)	(4,839)
Fair Value, Total	897,978	372,051
Agency securities [Member]
Marketable Securities [Line Items]
Gross Unrealized Losses Less than 12 Consecutive Months	(110)
Fair Value Less than 12 Consecutive Months	6,890
Gross Unrealized Losses, Total	(110)
Fair Value, Total	6,890
Mortgage-backed securities [Member]
Marketable Securities [Line Items]
Gross Unrealized Losses Less than 12 Consecutive Months	(148)	(1,849)
Fair Value Less than 12 Consecutive Months	18,909	85,688
Gross Unrealized Losses 12 Consecutive Months or Longer	(732)	(74)
Fair Value 12 Consecutive Months or Longer	7,598	2,122
Gross Unrealized Losses, Total	(880)	(1,923)
Fair Value, Total	26,507	87,810
Corporate securities [Member]
Marketable Securities [Line Items]
Gross Unrealized Losses Less than 12 Consecutive Months	(9,466)	(1,065)
Fair Value Less than 12 Consecutive Months	499,084	199,187
Gross Unrealized Losses 12 Consecutive Months or Longer	(2,361)	(572)
Fair Value 12 Consecutive Months or Longer	85,033	8,625
Gross Unrealized Losses, Total	(11,827)	(1,637)
Fair Value, Total	584,117	207,812
Municipal securities [Member]
Marketable Securities [Line Items]
Gross Unrealized Losses Less than 12 Consecutive Months	(4,247)	(223)
Fair Value Less than 12 Consecutive Months	226,009	50,403
Gross Unrealized Losses 12 Consecutive Months or Longer	(617)
Fair Value 12 Consecutive Months or Longer	29,405
Gross Unrealized Losses, Total	(4,864)	(223)
Fair Value, Total	255,414	50,403
Other [Member]
Marketable Securities [Line Items]
Gross Unrealized Losses Less than 12 Consecutive Months	(467)	(726)
Fair Value Less than 12 Consecutive Months	17,845	22,600
Gross Unrealized Losses 12 Consecutive Months or Longer	(406)	(330)
Fair Value 12 Consecutive Months or Longer	7,205	3,426
Gross Unrealized Losses, Total	(873)	(1,056)
Fair Value, Total	$ 25,050	$ 26,026

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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