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QUARTERLY RESULTS OF OPERATIONS (UNAUDITED) Narrative (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 12 Months Ended | 3 Months Ended | 12 Months Ended | 3 Months Ended
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Oct. 28, 2012 | Jan. 29, 2012 | Oct. 30, 2011 | Jul. 31, 2011 | Apr. 28, 2013 | Apr. 29, 2012 | May 01, 2011 | Jan. 29, 2012 Missouri Hog Farms [Member] | Oct. 30, 2011 Missouri Hog Farms [Member] | Jul. 31, 2011 Missouri Hog Farms [Member] | Apr. 29, 2012 Portsmouth, Virginia Plant [Member] | Jan. 29, 2012 Portsmouth, Virginia Plant [Member] | Oct. 30, 2011 Portsmouth, Virginia Plant [Member] | Jan. 29, 2012 Campofrio Food Group [Member] | Apr. 29, 2012 Campofrio Food Group [Member] | Apr. 29, 2012 Missouri Litigation [Member] | Jul. 31, 2011 Missouri Litigation [Member]
Loss on debt extinguishment | $ 120.7 | $ 4.6 | $ 6.4 | $ 1.2 | $ 120.7 | $ 12.2 | $ 92.5 |  |  |  |  |  |  |  |  |  |
Loss Contingency, Loss in Period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (16.8) | 39.0
Accelerated Depreciation |  |  |  |  |  |  |  | 0.7 | 3.2 | 4.3 |  |  |  |  |  |  |
Restructuring Charges |  |  |  |  |  |  |  |  |  |  | 1.2 | 1.7 | 1.8 |  |  |  |
Professional Fees, Terminated Potential Acquisition |  |  | 0.7 | 5.7 |  |  |  |  |  |  |  |  |  |  |  |  |
Entity Portion of Equity Method Investment Restructuring Charges |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 38.7 | $ 38.7 |  |

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