Available for Sale Debt Securities Reconciliation (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
Sep. 24, 2022	Dec. 25, 2021
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 9,612,783	$ 10,084,360
Unrealized Gains	172	118,677
Unrealized Losses	886,111	109,265
Fair Value	8,726,844	10,093,772
Taxable bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	9,345,448	9,644,692
Unrealized Gains	167	108,697
Unrealized Losses	881,631	108,906
Fair Value	8,463,984	9,644,483
Tax exempt bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	97,135	268,899
Unrealized Gains	5	2,351
Unrealized Losses	669	0
Fair Value	96,471	271,250
Restricted investments [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	170,200	170,769
Unrealized Gains	0	7,629
Unrealized Losses	3,811	359
Fair Value	$ 166,389	$ 178,039

Amortized cost of 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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-Publisher FASB
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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