PENSION AND OTHER POSTRETIREMENT BENEFITS - Assumptions Used to Determine Projected Benefits and Periodic Costs (Details)	6 Months Ended	12 Months Ended
	Jan. 03, 2020	Dec. 31, 2021	Jan. 01, 2021	Jun. 28, 2019
Pension
Obligation assumptions as of:
Discount rate		2.75%	2.31%
Rate of future compensation increase		3.01%	3.01%
Cash balance interest crediting rate		3.50%	3.50%
Cost assumptions for fiscal periods ended:
Discount rate to determine service cost	3.11%	2.26%	2.87%	3.89%
Discount rate to determine interest cost	2.94%	1.80%	2.74%	3.75%
Expected return on plan assets	7.68%	7.43%	7.68%	7.66%
Rate of future compensation increase	2.97%	3.01%	2.80%	2.76%
Cash balance interest crediting rate	3.50%	3.50%	3.50%	3.50%
Other Benefits
Obligation assumptions as of:
Discount rate		2.60%	2.10%
Cost assumptions for fiscal periods ended:
Discount rate to determine service cost	3.47%	2.49%	3.25%	4.14%
Discount rate to determine interest cost	2.74%	1.42%	2.55%	3.62%