PENSION AND OTHER POSTRETIREMENT BENEFITS - Schedule of Economic Assumptions and Impact of Change in Discount Rate on Benefit Obligation (Details)	6 Months Ended
	Jun. 26, 2022	Jun. 27, 2021	Dec. 26, 2021
Pension Benefits
Assumptions used to measure benefit obligation at end of period:
Discount rate	3.69%		2.23%
Assumptions used to measure net pension and other postretirement cost:
Discount rate	2.29%	1.86%
Expected return on plan assets	3.32%	3.53%
Other Benefits
Assumptions used to measure benefit obligation at end of period:
Discount rate	4.10%		2.38%
Assumptions used to measure net pension and other postretirement cost:
Discount rate	2.38%	1.80%