PENSION AND POSTRETIREMENT BENEFITS - Other Changes in Plan Assets and Benefit Obligations (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	May 25, 2025	Feb. 25, 2024	May 25, 2025	May 26, 2024
PENSION AND POSTRETIREMENT BENEFITS
Settlement loss		$ 6.8
Pension Plan [Member]
PENSION AND POSTRETIREMENT BENEFITS
Net actuarial gain (loss)			$ 72.3	$ 13.3
Amendments			(0.1)	(0.3)
Amortization of prior service cost (benefit)			1.6	1.6
Settlement loss	$ 13.0		(13.0)	1.1
Recognized net actuarial gain			(3.5)	(12.5)
Net amount recognized			57.3	3.2
Other Postretirement Benefits Plan [Member]
PENSION AND POSTRETIREMENT BENEFITS
Net actuarial gain (loss)			(8.2)	0.9
Amortization of prior service cost (benefit)			(1.7)	(1.7)
Recognized net actuarial gain			(1.5)	(4.7)
Net amount recognized			$ (11.4)	$ (5.5)