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FAIR VALUE MEASUREMENTS (Narrative) (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
May. 31, 2015 | Nov. 24, 2013 | Feb. 24, 2013 | May. 31, 2015 | May. 25, 2014 | May. 26, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Impairment |  |  |  | $ 1,527.9 | $ 602.2 |
Impairment charges |  |  |  | 48.8 | 75.7 |
Held for Sale | $ 0.0 |  |  | 0.0 | 830.6 | $ 898.7
Asset impairment charges |  |  |  | 1,615.3 | 720.0 | $ 20.2
Carrying amount of long-term debt | 7,900.0 |  |  | 7,900.0 | 8,900.0 |
Long-term debt at fair value | 8,300.0 |  |  | 8,300.0 | 9,500.0 |
Hedged debt |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Carrying amount of long-term debt |  |  |  |  | 500.0 |
Level 3 |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Carrying amount of agricultural land and facility |  |  |  |  | 19.7 |
Fair value of land and facility |  |  |  |  | 10.8 |
Impairment charge |  |  |  |  | 8.9 |
Level 3 | Discontinued Operations |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Carrying amount of assets held for sale |  |  |  |  | 68.9 |
Held for Sale |  |  |  |  | 43.5 |
Asset impairment charges |  |  |  |  | 25.4 |
Private Brands |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Impairment | 1,530.0 |  |  | 1,527.9 | 602.2 |
Impairment charges |  |  |  | 43.7 | 3.2 |
Carrying amount of agricultural land and facility | $ 13.7 |  |  | 13.7 |  |
Impairment charge of technology license |  |  |  | 43.7 | 3.2 |
Consumer Foods |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Impairment |  |  |  | 0.0 | 0.0 |
Impairment charges |  |  |  | 4.8 | 72.5 |
Impairment charge of technology license |  |  |  | 4.8 | 72.5 |
Commercial Foods |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Impairment |  |  |  | 0.0 | 0.0 |
Impairment charges |  |  |  | 0.3 |  |
Asset impairment charges |  | $ 8.9 | $ 10.2 |  |  |
Impairment charge of technology license |  |  |  | $ 0.3 |  |
Commercial Foods | Level 3 |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Carrying amount of agricultural land and facility |  |  |  |  | 20.3 |
Fair value of land and facility |  |  |  |  | 3.8 |
Impairment charge |  |  |  |  | 16.5 |
Corporate |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Impairment charge of technology license |  |  |  |  | $ 3.2 |

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