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DISPOSAL OF LONG-LIVED ASSETS Missouri Hog Farms (Details) (USD $) In Millions	3 Months Ended
	Jul. 31, 2011
Long-Lived Assets to be Abandoned [Line Items]
Accelerated Depreciation	$ 4.3
Second Quarter of Fiscal 2012 [Member]
Long-Lived Assets to be Abandoned [Line Items]
Accelerated Depreciation	3.2
Third Quarter of Fiscal 2012 [Member]
Long-Lived Assets to be Abandoned [Line Items]
Accelerated Depreciation	$ 0.7

X

- Definition

Additional depreciation recognized during the period as the result of shortening an assets useful life.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ Details

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Namespace Prefix:	us-gaap
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