Available for Sale Debt Securities Reconciliation (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
Jun. 25, 2022	Dec. 25, 2021
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 10,043,242	$ 10,084,360
Unrealized Gains	1,044	118,677
Unrealized Losses	729,894	109,265
Fair Value	9,314,392	10,093,772
Taxable bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	9,683,628	9,644,692
Unrealized Gains	597	108,697
Unrealized Losses	727,727	108,906
Fair Value	8,956,498	9,644,483
Tax exempt bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	204,333	268,899
Unrealized Gains	26	2,351
Unrealized Losses	211	0
Fair Value	204,148	271,250
Restricted investments [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	155,281	170,769
Unrealized Gains	421	7,629
Unrealized Losses	1,956	359
Fair Value	$ 153,746	$ 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 1: http://www.xbrl.org/2003/role/disclosureRef
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