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PENSION AND POSTRETIREMENT BENEFITS (Benefit Obligations) (Details) - USD ($) $ in Millions | 12 Months Ended
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May 29, 2016 | May 31, 2015 | May 25, 2014
Pension Benefits |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Net actuarial gain (loss) | $ (390.5) | $ (143.8) |
Amendments | (2.0) | (0.6) |
Amortization of prior service cost (benefit) | 2.7 | 5.2 |
Recognized net actuarial loss | 348.5 | 6.9 | $ 2.7
Net amount recognized | (41.3) | (132.3) |
Other Benefits |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Net actuarial gain (loss) | (8.0) | 35.8 |
Amendments | (5.6) | 3.3 |
Amortization of prior service cost (benefit) | (7.8) | (7.9) |
Recognized net actuarial loss | 0.1 | 3.5 | $ 6.7
Net amount recognized | $ (21.3) | $ 34.7 |

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