CONTINGENCIES (Details)			3 Months Ended		12 Months Ended
	Mar. 25, 2016 USD ($)	Jan. 27, 2014 USD ($) defendant	May 27, 2018 USD ($)	Feb. 25, 2018 USD ($)	May 27, 2018 USD ($) site period	May 28, 2017 USD ($)	May 29, 2016 USD ($)
Guarantor Obligations [Line Items]
Accrual for Beatrice-related environmental matters			$ 56,000,000		$ 56,000,000	$ 54,700,000
Selling, general and administrative expenses					1,318,000,000	1,417,100,000	$ 2,024,600,000
Loss recognized for early exit of lease contracts				$ 48,200,000
Significant litigation accruals			151,000,000		151,000,000	0	0
Loss on lease put option
Guarantor Obligations [Line Items]
Estimated possible loss				$ 8,200,000
Accrued put cost			1,200,000		$ 1,200,000
Lamb Weston
Guarantor Obligations [Line Items]
Number of extension periods | period					2
Term of optional extension periods					5 years
Judicial ruling
Guarantor Obligations [Line Items]
Amount of verdict in favor of Jacobs	$ 108,900,000
Beatrice
Guarantor Obligations [Line Items]
Number of sites where Beatrice is a potentially responsible party | site					40
Number of sites where Beatrice has paid or is paying its liability share | site					31
Accrual for Beatrice-related environmental matters			52,400,000		$ 52,400,000
Guarantee to make payments to warehouse provider
Guarantor Obligations [Line Items]
Minimum monthly payments required under agreement					1,500,000
Warehouse services agreement guarantee recorded in other noncurrent liabilities			28,100,000		28,100,000
Performance and payment of all amounts under sublease agreement
Guarantor Obligations [Line Items]
Maximum amount guaranteed for Lamb Weston's performance and payment			75,000,000.0		75,000,000.0
California | Beatrice
Guarantor Obligations [Line Items]
Number of other defendants | defendant		2
Estimated possible loss		$ 1,150,000,000
Restatement Adjustment
Guarantor Obligations [Line Items]
Selling, general and administrative expenses						$ (6,700,000)
Minimum | California | Beatrice
Guarantor Obligations [Line Items]
Estimated possible loss			60,000,000		60,000,000
Maximum | California | Beatrice
Guarantor Obligations [Line Items]
Estimated possible loss			$ 335,000,000		335,000,000
SCAE Plan
Guarantor Obligations [Line Items]
Aggregate charges for early termination of leases					$ 31,500,000
Financing lease obligation							74,200,000
Early termination of leases | SCAE Plan
Guarantor Obligations [Line Items]
Aggregate charges for early termination of leases							$ 55,600,000