CONTINGENCIES (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended					12 Months Ended					3 Months Ended		12 Months Ended			12 Months Ended	3 Months Ended	1 Months Ended
	May 25, 2014	Nov. 24, 2013	May 26, 2013	Feb. 24, 2013	Aug. 26, 2012	May 25, 2014	May 26, 2013	May 27, 2012	May 30, 2009	May 26, 2013 Litigation Matter	Aug. 26, 2012 Compensatory Damages	Aug. 26, 2012 Punitive Damages	May 25, 2014 Beatrice site	May 25, 2014 Potato Supply Agreement Guarantee	May 25, 2014 Onion Supply Agreement Guarantee	May 25, 2014 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	May 25, 2014 CALIFORNIA Beatrice
Guarantor Obligations [Line Items]
Loss Contingency, Range of Possible Loss, Maximum	$ 3					$ 3														$ 1,150
Number of sites under environmental matters for which acquired company has a liability													36
Number of sites under environmental matters for which acquired company is making payments													34
Reserves for Beatrice environmental matters	63.0		65.8			63.0	65.8						61.6
Maximum period expected for disbursements on environmental matters													18 years
Maximum period of guarantee																2 years
Guarantee obligation under purchase agreement															25.0	5.4
Amount of supplier loans effectively guaranteed														34.4
Loan purchase under agreement								40.8
Asset impairment charges		8.9		10.2		720.0	20.2	8.6
Gain on sale of land	5.1
Face value of federal income tax credits	26.7					26.7
Dispute coverage charge with insurance carrier								17.5	24.8	7.5
Loss Contingency Accrual, Period Increase (Decrease)	(6.7)
Proceeds from Legal Settlements	3.5		25.0
Gain (Loss) Related to Litigation Settlement			25.0
Number of plaintiffs																	3	2	1
Unfavorable verdict											77.5	100.0
Punitive award against the company					7
Minimum annual payments to third party						2.5
Estimate of annual payment to third party in 2015						$ 6.0