PENSION AND POSTRETIREMENT BENEFITS (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Feb. 23, 2025	Feb. 25, 2024	Feb. 23, 2025	Dec. 31, 2023	Dec. 30, 2023
PENSION AND POSTRETIREMENT BENEFITS
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement and Curtailment Gain (Loss), before Tax		$ 6.8
Pension plan
PENSION AND POSTRETIREMENT BENEFITS
Defined benefit plan, settlement, payment and plan of assets		$ 135.0
Discount rate				0.052%	0.0552%
Defined Benefit Plan, Service Cost Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate			5.72%
Defined Benefit Plan, Interest Cost Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate			5.51%
Employer contributions	$ 3.2		$ 9.1
Contributions, remainder fiscal year	2.6		2.6
Other postretirement benefits plan
PENSION AND POSTRETIREMENT BENEFITS
Employer contributions	1.7		5.1
Contributions, next fiscal year	$ 1.5		$ 1.5