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IMPAIRMENT AND DISPOSAL OF LONG-LIVED ASSETS Narrative (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended |  | 3 Months Ended | 12 Months Ended | 3 Months Ended | 12 Months Ended |  | 3 Months Ended | 12 Months Ended | 3 Months Ended
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Apr. 29, 2012 | May 01, 2011 | May 02, 2010 | May 01, 2011 Pork Segment [Member] | Apr. 29, 2012 Pork Segment [Member] Kinston Facility Expansion [Member] | Oct. 30, 2011 Pork Segment [Member] Portsmouth, Virginia Plant [Member] | Apr. 29, 2012 Pork Segment [Member] Portsmouth, Virginia Plant [Member] | Jan. 31, 2010 Pork Segment [Member] Sioux City, Iowa Plant [Member] | May 01, 2011 Hog Production Segment [Member] | Jan. 30, 2011 Hog Production Segment [Member] | May 01, 2011 Hog Production Segment [Member] | Apr. 29, 2012 Hog Production Segment [Member] Missouri Hog Farms [Member] | May 01, 2011 Other Segment [Member] | Apr. 29, 2012 Scenario, Forecast [Member] Pork Segment [Member] Portsmouth, Virginia Plant [Member] | May 01, 2011 Dalhart, Texas Hog Farms [Member] Hog Production Segment [Member] | Jan. 30, 2011 Dalhart, Texas Hog Farms [Member] Hog Production Segment [Member] | Aug. 02, 2009 Dalhart, Texas Hog Farms [Member] Hog Production Segment [Member] | Jan. 30, 2011 Oklahoma and Iowa Hog Farms [Member] Hog Production Segment [Member] | Aug. 02, 2009 Missouri Hog Farms [Member] Hog Production Segment [Member] | May 02, 2010 RMH Foods, LLC [Member] Pork Segment [Member] | Jan. 30, 2011 Butterball, LLC [Member] Turkey Operations, Including Investment in Butterball, LLC [Member] Other Segment [Member]
Estimated Total Capital Expenditures |  |  |  |  | $ 85 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accelerated Depreciation |  |  |  |  |  |  | 3.3 |  |  |  |  | 8.2 |  |  |  |  |  |  |  |  |
Estimated Future Accelerated Depreciation |  |  |  |  |  |  |  |  |  |  |  |  |  | 4.7 |  |  |  |  |  |  |
Inventory Write-down |  |  |  |  |  | 0.8 |  | 2.5 |  |  |  |  |  |  |  |  |  |  |  |  |
Severance Costs |  |  |  |  |  | 0.6 |  | 7.0 |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment of Long-Lived Assets to be Disposed of |  |  |  |  |  |  |  | 3.6 |  |  |  |  |  |  |  |  | 23.6 |  | 10.5 | 3.5 |
Assets of Disposal Group, Including Discontinued Operation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 20.9 |  |  |  |
Proceeds from the sale of property, plant and equipment | 6.4 | 22.8 | 11.7 |  |  |  |  |  |  |  |  |  |  |  |  | 9.1 |  |  |  |  |
(Gain) loss on sale of property, plant and equipment | (25.2) | (53.0) | 22.7 |  |  |  |  |  | (13.6) | (5.1) |  |  |  |  | (13.6) | 1.8 |  | (6.9) |  |  | (0.2)
Proceeds from Divestiture of Businesses |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 32.5 |  |  | 70.4 |  | 9.1 | 167.0
Goodwill, Written off Related to Sale of Business Unit |  | (45.0) |  | 0 |  |  |  |  |  |  | (25.5) |  | (19.5) |  | 8.5 |  |  | 17.0 |  |  |
Goodwill, Impairment Loss |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6.0 | 0.5 |
Sale of Stock, Percentage of Ownership before Transaction |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 49.00%
Sale of Stock, Joint Venture Partner Ownership before Transaction |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 51.00%
Restructuring Charges |  |  |  |  |  |  |  | 13.1 |  |  |  |  |  |  |  |  |  |  |  |  |
Liabilities Assumed |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1.4 |

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