CONTINGENCIES (Details)			3 Months Ended	6 Months Ended
	Mar. 25, 2016 USD ($)	Jan. 27, 2014 USD ($) defendant	Feb. 25, 2018 USD ($) property	Nov. 26, 2017 USD ($) site period	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				$ 50,700,000	$ 51,800,000
Put options, general exercise period				30 days
Accrued put cost				$ 10,200,000	$ 8,400,000
Loss on lease put option for one building
Guarantor Obligations [Line Items]
Accrued put cost				$ 1,000,000
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				$ 52,800,000
Beatrice | California
Guarantor Obligations [Line Items]
Number of other defendants | defendant		2
Estimate of possible loss		$ 1,150,000,000
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				28,900,000
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
Scenario, Forecast
Guarantor Obligations [Line Items]
Loss for early termination of lease			$ 13,000,000
Scenario, Forecast | Loss on lease put option for one building
Guarantor Obligations [Line Items]
Estimate of possible loss			$ 8,200,000
Number of properties under lease agreements, put option price exceeds estimated fair value | property			1
Minimum | Scenario, Forecast
Guarantor Obligations [Line Items]
Loss for early termination of lease			$ 30,000,000
Maximum | Scenario, Forecast
Guarantor Obligations [Line Items]
Loss for early termination of lease			$ 40,000,000