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PENSION AND OTHER POSTRETIREMENT BENEFITS - Schedule of Economic Assumptions, and Impact of Change in Discount Rate on Benefit Obligation (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 25, 2022 | Dec. 26, 2021 | Dec. 27, 2020
Net pension and other postretirement cost |  |  |
Increase in Discount Rate of 0.25% - impact on defined benefit obligation for pension benefits | $ (6,321) |  |
Decrease in Discount Rate of 0.25% - impact on defined benefit obligation for pension benefits | $ 6,655 |  |
Pension Benefits |  |  |
Benefit obligation |  |  |
Discount rate | 5.04% | 2.23% | 1.83%
Net pension and other postretirement cost |  |  |
Discount rate | 3.67% | 2.08% | 2.16%
Expected return on plan assets | 4.68% | 3.53% | 4.34%
Other Benefits |  |  |
Benefit obligation |  |  |
Discount rate | 5.16% | 2.38% | 1.80%
Net pension and other postretirement cost |  |  |
Discount rate | 2.38% | 1.80% | 2.77%

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