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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 | 9 Months Ended
--- | --- | ---
Feb. 28, 2016 | Feb. 22, 2015 | Nov. 23, 2014 | Feb. 28, 2016 | Feb. 22, 2015
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Net derivative gains (losses) |  |  |  | $ (14.5) |
Reporting segments | Consumer Foods |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Net derivative gains (losses) |  | $ (18.6) | $ (20.9) |  |
Reporting segments | Commercial Foods |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Net derivative gains (losses) |  | (1.4) | $ (1.6) |  |
Commodity contracts |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Net derivative gains (losses) | $ (5.1) | (31.5) |  | (20.1) | $ (76.3)
Commodity contracts | Reporting segments |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Net derivative gains (losses) | (7.6) | (35.7) |  | (18.7) | (25.5)
Commodity contracts | Reporting segments | Consumer Foods |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Net derivative gains (losses) | (4.6) | (30.9) |  | (12.9) | (26.7)
Commodity contracts | Reporting segments | Commercial Foods |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Net derivative gains (losses) | (3.0) | (4.8) |  | (5.8) | 1.2
Commodity contracts | Segment reconciling items |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Net derivative gains (losses) | $ 2.5 | $ 4.2 |  | $ (1.4) | $ (50.8)

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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5618551-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (a),(c),(d),(e) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624171-113959 + Details
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