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BUSINESS SEGMENTS AND RELATED INFORMATION (Allocation of Net Derivative Gains (Losses) from Economic Hedges of Forecasted Commodity Consumption and Foreign Currency Risk) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
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Nov. 29, 2015 | Nov. 23, 2014 | Nov. 29, 2015 | Nov. 23, 2014
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Net derivative gains (losses) |  |  | $ (11.6) |
Commodity contracts |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Net derivative gains (losses) | $ (5.6) | $ (18.2) | (14.9) | $ (44.8)
Commodity contracts | Reporting segments |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Net derivative gains (losses) | (3.9) | 3.5 | (11.0) | 10.2
Commodity contracts | Reporting segments | Consumer Foods |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Net derivative gains (losses) | (2.1) | 0.5 | (8.2) | 4.2
Commodity contracts | Reporting segments | Commercial Foods |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Net derivative gains (losses) | (1.8) | 3.0 | (2.8) | 6.0
Commodity contracts | Segment reconciling items |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Net derivative gains (losses) | $ (1.7) | $ (21.7) | $ (3.9) | $ (55.0)

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