CONTINGENCIES (Details)				6 Months Ended
	Sep. 12, 2018 legal_action	Mar. 25, 2016 USD ($)	Jan. 27, 2014 USD ($) defendant	Nov. 25, 2018 USD ($) site period	Sep. 04, 2018 USD ($)	May 27, 2018 USD ($)
Litigation related to the Pinnacle Merger
Guarantor Obligations [Line Items]
Number of actions consolidated | legal_action	3
Loss on lease put option for one building
Guarantor Obligations [Line Items]
Estimate of possible loss				$ 8,200,000		$ 8,200,000
Amount accrued				$ 1,400,000		$ 1,200,000
Judicial ruling
Guarantor Obligations [Line Items]
Damages awarded to plaintiff		$ 108,900,000
Beatrice
Guarantor Obligations [Line Items]
Number of sites under environmental matters for which acquired company has a liability | site				40
Accrual for environmental matters				$ 53,400,000
Beatrice | California
Guarantor Obligations [Line Items]
Number of other defendants | defendant			2
Estimate of possible loss			$ 1,150,000,000		$ 409,000,000
Amount accrued				136,000,000
Warehouse services agreement
Guarantor Obligations [Line Items]
Minimum monthly payment required under warehouse services agreement				1,500,000.0
Liability for estimated fair value of guarantee				27,300,000
Performance and payment guarantee for Lamb Weston
Guarantor Obligations [Line Items]
Guarantee under sublease agreement (maximum)				$ 75,000,000.0
Lamb Weston
Guarantor Obligations [Line Items]
Number of optional extension periods | period				2
Period of optional extensions				5 years