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INVESTMENTS Narrative (Details) (Campofrio Food Group [Member]) | 3 Months Ended |
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Jul. 31, 2011 Change in Market Value of Equity Method Investment [Member] EUR (€) | Jul. 31, 2011 EUR (€) | Jul. 31, 2011 USD ($)
Schedule of Equity Method Investments [Line Items] |  |  |
Equity Method Investment, Shares Owned |  | 37,811,302 | 37,811,302
Equtiy Method Investment, Market Value Per Share in Euros |  | € 6.13 |
Equtiy Method Investment, Market Value Per Share in USD |  |  | $ 8.83
Low Market Value, Per Share, Subsequent to Period End, During August 2011 | € 5.30 |  |

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