CONTINGENCIES (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended					12 Months Ended					3 Months Ended						3 Months Ended		1 Months Ended
	Aug. 25, 2013	May 26, 2013	Feb. 24, 2013	Aug. 26, 2012	May 27, 2012	May 26, 2013	May 27, 2012	May 29, 2011	May 30, 2009	May 31, 2012	Aug. 26, 2012 Litigation Matter	Aug. 26, 2012 Compensatory Damages	Aug. 26, 2012 Punitive Damages	Aug. 25, 2013 Beatrice site	Aug. 25, 2013 Potato Supply Agreement Guarantee	Aug. 25, 2013 Onion Supply Agreement Guarantee	Aug. 25, 2013 Leases and Other Commercial Obligations Guarantee	Aug. 26, 2012 Threatened Litigation Damage from Fire, Explosion or Other Hazard employee	Apr. 30, 2010 Subcontractor Pending Litigation Damage from Fire, Explosion or Other Hazard employee	Apr. 30, 2010 Primary Contractor Pending Litigation Damage from Fire, Explosion or Other Hazard employee	Sep. 23, 2013 California Subsequent Event Beatrice
Guarantor Obligations [Line Items]
Expected decision from court																					90 days
Number of sites under environmental matters for which acquired company has a liability														35
Number of sites under environmental matters for which acquired company is making payments														33
Reserves for Beatrice environmental matters														$ 63.0
Maximum period expected for disbursements on environmental matters														18 years
Maximum period of guarantee																	2 years
Guarantee obligation under purchase agreement																25.0	7.5
Amount of supplier loans effectively guaranteed															66.2
Loan purchase under agreement					40.8		40.8
Asset impairment charges	2.1		10.2	0.3
Face value of federal income tax credits	21.2
Dispute coverage charge with insurance carrier							17.5		24.8		7.5
Favorable claim related to defense cost						1.4	11.8	13.2
Favorable claim for disputed coverage					25.0
Proceeds from Legal Settlements		25.0
Gain (Loss) Related to Litigation Settlement		25.0
Loss Contingency, Number of Plaintiffs																		3	2	1
Unfavorable verdict												77.5	100.0
Punitive award against the company				7
Damages accrued in prior period										$ 3