CONTINGENCIES (Details)			3 Months Ended
	Mar. 25, 2016 USD ($)	Jan. 27, 2014 USD ($) defendant	Aug. 27, 2017 USD ($) period site	May 28, 2017 USD ($)
Guarantor Obligations [Line Items]
Period during which Beatrice has paid or is in the process of paying its liability share			5 years
Put options, general exercise period			30 days
Loss on lease put option
Guarantor Obligations [Line Items]
Estimate of possible loss			$ 51,800,000	$ 51,800,000
Put options, general exercise period			30 days
Accrued put cost			$ 9,300,000	$ 8,400,000
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
Number of sites under environmental matters for which acquired company is making payments | site			31
Accrual for environmental matters			$ 53,100,000
Beatrice | California
Guarantor Obligations [Line Items]
Number of other defendants | defendant		2
Estimate of possible loss		$ 1,150,000,000
Wells G&H - Southwest Properties Superfund
Guarantor Obligations [Line Items]
Accrual for environmental matters			1,100,000
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			29,300,000
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