BUSINESS SEGMENTS AND RELATED INFORMATION (Net Derivative Gains (Losses)) (Details) (Commodity contracts, USD $) In Millions, unless otherwise specified	12 Months Ended
	May 25, 2014	May 26, 2013	May 27, 2012
Segment Reporting Information [Line Items]
Derivative, Gain (Loss) on Derivative, Net	$ 25.7	$ 74.8	$ (66.8)
Segment Reconciling Items [Member]
Segment Reporting Information [Line Items]
Derivative, Gain (Loss) on Derivative, Net	36.0	49.8	(91.2)
Operating Segments [Member]
Segment Reporting Information [Line Items]
Derivative, Gain (Loss) on Derivative, Net	(10.3)	25.0	24.4
Consumer Foods
Segment Reporting Information [Line Items]
Derivative, Gain (Loss) on Derivative, Net	(5.9)	26.7	25.3
Commercial Foods
Segment Reporting Information [Line Items]
Derivative, Gain (Loss) on Derivative, Net	6.4	(2.7)	(0.5)
Private Brands
Segment Reporting Information [Line Items]
Derivative, Gain (Loss) on Derivative, Net	$ (10.8)	$ 1.0	$ (0.4)