Discontinued Operations and Divestitures (Details Textuals) (USD $)	1 Months Ended	12 Months Ended		1 Months Ended	12 Months Ended	1 Months Ended	3 Months Ended		12 Months Ended	1 Months Ended		3 Months Ended	1 Months Ended	12 Months Ended
	Jun. 30, 2008	May 30, 2010	May 31, 2009	May 29, 2011 Frozens Handheld Operations [Member]	May 29, 2011 Frozens Handheld Operations [Member]	Jul. 31, 2008 Pemmican [Member]	Aug. 29, 2010 Gilroy Foods & Flavors [Member]	May 30, 2010 Gilroy Foods & Flavors [Member]	May 30, 2010 Gilroy Foods & Flavors [Member]	Feb. 27, 2010 Lucks [Member]	Jun. 30, 2009 Fernandos [Member]	May 31, 2009 Fernandos [Member]	Jun. 30, 2008 Trading and Merchandising Operations [Member]	May 31, 2009 Trading and Merchandising Operations [Member]
Discontinued Operations and Divestitures (Textuals) [Abstract]
Recognized impairment and related charges					$ 21,700,000			$ 59,200,000				$ 8,900,000
Short-term receivable due from the purchaser													37,200,000	37,200,000
Recognized impairment and related charges, after-tax					14,200,000			39,900,000	39,300,000
Consideration for divestiture of business, subject to final working capital adjustment				9,500,000			245,700,000
Consideration for divestiture of business		21,700,000	29,700,000			29,400,000				22,000,000
Pre-tax gain from disposal of businesses		14,300,000	19,700,000			19,400,000				14,300,000
After-tax gain from sale of business						10,600,000				9,000,000
After-tax gain on the disposition														301,200,000
Sale of business for proceeds													2,200,000,000
Discontinued Operation Proceeds From Sale											6,400,000
Warrant received in proceeds from divestiture of businesses fair value													1,800,000
Payment-in-kind debt securities issued by the purchaser, initial estimated fair value													479,400,000
Face amount of debt securities received in proceeds from divestiture of businesses													$ 550,000,000
Period of warrant to acquire issued common equity of the parent company of the divested operations	4 years
Additional Discontinued Operations and Divestitures (Textuals) [Abstract]
Percent of acquire warrant of the issued common equity of the parent company of the divested operations	5.00%