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PENSION AND POSTRETIREMENT BENEFITS - Other Changes in Plan Assets and Benefit Obligations (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Feb. 25, 2024 | May 26, 2024 | May 28, 2023
PENSION AND POSTRETIREMENT BENEFITS |  |  |
Settlement loss | $ 6.8 |  |
Pension Plan [Member] |  |  |
PENSION AND POSTRETIREMENT BENEFITS |  |  |
Net actuarial gain (loss) |  | $ 13.3 | $ (38.4)
Amendments |  | (0.3) | (3.0)
Amortization of prior service cost (benefit) |  | 1.6 | 1.4
Settlement loss |  | 1.1 |
Recognized net actuarial gain |  | (12.5) |
Currency |  |  | 0.1
Net amount recognized |  | 3.2 | (39.9)
Other Postretirement Benefits Plan [Member] |  |  |
PENSION AND POSTRETIREMENT BENEFITS |  |  |
Net actuarial gain (loss) |  | 0.9 | 6.3
Amortization of prior service cost (benefit) |  | (1.7) | (1.7)
Recognized net actuarial gain |  | (4.7) | (4.4)
Net amount recognized |  | $ (5.5) | $ 0.2

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