EMPLOYEE BENEFIT PLANS AND OTHER POST-RETIREMENT BENEFITS - Actuarial Assumptions (Details)	12 Months Ended
	May 30, 2021	May 31, 2020	May 26, 2019	May 27, 2018
Pension Plans
Weighted-Average Assumptions Used to Determine Benefit Obligations:
Discount rate (as percent)		3.14%	4.01%	4.25%
Weighted-Average Assumptions Used to Determine Net Periodic Benefit Cost:
Discount rate (as percent)		4.01%	4.25%	4.33%
Long-term rate of return on plan assets (as percent)		5.12%	5.30%	7.50%
Pension Plans | Forecast
Weighted-Average Assumptions Used to Determine Benefit Obligations:
Discount rate (as percent)	3.14%
Weighted-Average Assumptions Used to Determine Net Periodic Benefit Cost:
Long-term rate of return on plan assets (as percent)	2.90%
Post-Retirement Plan
Weighted-Average Assumptions Used to Determine Benefit Obligations:
Discount rate (as percent)		2.85%	3.81%	4.18%
Weighted-Average Assumptions Used to Determine Net Periodic Benefit Cost:
Discount rate (as percent)		3.81%	4.18%	3.60%
Post-Retirement Plan | Forecast
Weighted-Average Assumptions Used to Determine Benefit Obligations:
Discount rate (as percent)	2.85%