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
	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