BUSINESS SEGMENTS AND RELATED INFORMATION - Schedule 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. 27, 2016	Nov. 29, 2015	Nov. 27, 2016	Nov. 29, 2015
Derivative Instruments, Gain (Loss) [Line Items]
Net derivative gains (losses) incurred			$ 1.9
Commodity contracts
Derivative Instruments, Gain (Loss) [Line Items]
Net derivative gains (losses) incurred	$ 3.0	$ (3.8)	2.7	$ (9.7)
Commodity contracts | Reporting segments
Derivative Instruments, Gain (Loss) [Line Items]
Net derivative gains (losses) incurred	3.8	(3.2)	2.8	(9.9)
Commodity contracts | Reporting segments | Net derivative gains (losses) allocated to Grocery & Snacks
Derivative Instruments, Gain (Loss) [Line Items]
Net derivative gains (losses) incurred	2.4	(1.3)	2.0	(5.4)
Commodity contracts | Reporting segments | Net derivative gains (losses) allocated to Refrigerated & Frozen
Derivative Instruments, Gain (Loss) [Line Items]
Net derivative gains (losses) incurred	0.7	(0.8)	0.5	(2.5)
Commodity contracts | Reporting segments | Net derivative gains allocated to International Foods
Derivative Instruments, Gain (Loss) [Line Items]
Net derivative gains (losses) incurred	0.2	0.0	0.2	0.0
Commodity contracts | Reporting segments | Net derivative gains (losses) allocated to Foodservice
Derivative Instruments, Gain (Loss) [Line Items]
Net derivative gains (losses) incurred	0.5	(0.5)	0.2	(1.0)
Commodity contracts | Reporting segments | Net derivative losses allocated to Commercial
Derivative Instruments, Gain (Loss) [Line Items]
Net derivative gains (losses) incurred	0.0	(0.6)	(0.1)	(1.0)
Commodity contracts | Net derivative gains (losses) recognized in general corporate expenses
Derivative Instruments, Gain (Loss) [Line Items]
Net derivative gains (losses) incurred	$ (0.8)	$ (0.6)	$ (0.1)	$ 0.2