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		6 Months Ended
	Nov. 29, 2015	Nov. 23, 2014	Nov. 29, 2015	Nov. 23, 2014
Derivative Instruments, Gain (Loss) [Line Items]
Net derivative gains (losses)			$ (11.6)
Commodity contracts
Derivative Instruments, Gain (Loss) [Line Items]
Net derivative gains (losses)	$ (5.6)	$ (18.2)	(14.9)	$ (44.8)
Commodity contracts | Reporting segments
Derivative Instruments, Gain (Loss) [Line Items]
Net derivative gains (losses)	(3.9)	3.5	(11.0)	10.2
Commodity contracts | Reporting segments | Consumer Foods
Derivative Instruments, Gain (Loss) [Line Items]
Net derivative gains (losses)	(2.1)	0.5	(8.2)	4.2
Commodity contracts | Reporting segments | Commercial Foods
Derivative Instruments, Gain (Loss) [Line Items]
Net derivative gains (losses)	(1.8)	3.0	(2.8)	6.0
Commodity contracts | Segment reconciling items
Derivative Instruments, Gain (Loss) [Line Items]
Net derivative gains (losses)	$ (1.7)	$ (21.7)	$ (3.9)	$ (55.0)