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Accumulated Other Comprehensive Earnings (Losses) (Tables)
9 Months Ended
Sep. 30, 2023
Equity [Abstract]  
Schedule of Accumulated Other Comprehensive Earnings (Losses) [Table Text Block]
Following is a reconciliation of the changes in accumulated other comprehensive earnings (losses) net of income taxes for the three months ended September 30, 2023 and September 24, 2022:
Investments
Postretirement
Benefit
Accumulated
Other
Comprehensive
Earnings (Losses)
(Amounts are in millions)
2023
Balances at July 1, 2023$(585)(576)
Unrealized loss on debt securities(37)— (37)
Net other comprehensive losses(37)— (37)
Balances at September 30, 2023$(622)(613)
2022
Balances at June 25, 2022$(544)(11)(555)
Unrealized loss on debt securities(119)— (119)
Net realized loss on debt securities reclassified to investment income— 
Net other comprehensive losses(117)— (117)
Balances at September 24, 2022$(661)(11)(672)
Following is a reconciliation of the changes in accumulated other comprehensive earnings (losses) net of income taxes for the nine months ended September 30, 2023 and September 24, 2022:
Investments
Postretirement
Benefits
Accumulated
Other
Comprehensive
Earnings (Losses)
(Amounts are in millions)
2023
Balances at December 31, 2022$(618)(609)
Unrealized loss on debt securities(4)— (4)
Net other comprehensive losses (4)— (4)
Balances at September 30, 2023$(622)(613)
2022
Balances at December 25, 2021$(12)(5)
Unrealized loss on debt securities(669)— (669)
Net realized loss on debt securities reclassified to investment income— 
Adjustment to postretirement benefit obligation— 
Net other comprehensive (losses) earnings(668)(667)
Balances at September 24, 2022$(661)(11)(672)