BUSINESS SEGMENTS AND RELATED INFORMATION (Narrative) (Details) $ in Millions	3 Months Ended			9 Months Ended		12 Months Ended
	Feb. 28, 2016 USD ($)	Feb. 22, 2015 USD ($)	Nov. 23, 2014 USD ($)	Feb. 28, 2016 USD ($) segment	Feb. 22, 2015	May. 31, 2015 USD ($)	Nov. 28, 2015 company
Segment Reporting [Abstract]
Number of reportable segments | segment				2
Cumulative net derivative losses from economic hedges recognized in corporate	$ 16.2			$ 16.2
Derivative loss to be reclassified to segment operating results thereafter						$ 1.7
Reclassify losses in 2016				10.6
Reclassify losses in 2017 and thereafter				5.6
Gain on the settlement of a pension plan of an international potato venture	$ 17.7
Number of public companies formed due to spinoff transaction | company							2
Revenue, Major Customer [Line Items]
Net derivative losses recognized in general corporate expenses				$ 14.5
Net sales | Wal-Mart Stores, Inc. and affiliates | Consumer Foods
Revenue, Major Customer [Line Items]
Concentration risk (as a percent)	18.00%	19.00%		18.00%	19.00%
Net receivables | Wal-Mart Stores, Inc. and affiliates | Consumer Foods
Revenue, Major Customer [Line Items]
Concentration risk (as a percent)				17.00%		16.00%
Reporting segments | Consumer Foods
Revenue, Major Customer [Line Items]
Net derivative losses recognized in general corporate expenses		$ 18.6	$ 20.9
Reporting segments | Commercial Foods
Revenue, Major Customer [Line Items]
Net derivative losses recognized in general corporate expenses		$ 1.4	$ 1.6