BUSINESS SEGMENTS AND RELATED INFORMATION (Allocation of Net Derivative Gains (Losses) from Economic Hedges of Forecasted Commodity Consumption and Foreign Currency Risk) (Details) - USD ($) $ in Millions	3 Months Ended
	Aug. 30, 2015	Aug. 24, 2014
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivative	$ (8.9)
Commodity contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivative	(9.3)	$ (26.5)
Commodity contracts | Consumer Foods
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivative	(6.1)	3.7
Commodity contracts | Commercial Foods
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivative	(1.0)	3.1
Operating segments | Commodity contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivative	(7.1)	6.8
Segment reconciling items | Commodity contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivative	$ (2.2)	$ (33.3)