RESTRUCTURING ACTIVITIES (Narrative) (Details) $ in Millions	3 Months Ended		12 Months Ended
	Feb. 28, 2016 USD ($)	Nov. 29, 2015 USD ($) building	May 29, 2016 USD ($)	May 31, 2015 USD ($)	May 25, 2014 USD ($)
SCAE Plan
Restructuring Cost and Reserve [Line Items]
Approved expenses (up to)			$ 739.0
Restructuring and related cost, expected cost			443.9
Restructuring And Related Cost Expected Cash Outflows From Inception			315.5
Restructuring And Related Cost Expected Noncash Charges From Inception			128.4
Expenses that have resulted or will result in cash outflows			195.7
Non-cash expenses			86.2
Restructuring and related cost, incurred cost			281.8	$ 47.7	$ 31.3
Property Subject to or Available for Operating Lease, Number of Units | building		2
Loss on Contract Termination		$ 55.6
Financial Lease Obligations		$ 74.2
Restructuring And Related Cost Incurred Cash Outflows			248.8
Restructuring And Related Cost Incurred Noncash Charges			112.0
Acquisition-Related Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost			23.7
Expenses that have resulted or will result in cash outflows			15.8
Non-cash expenses			7.9
Acquisition-Related Restructuring | Consumer Foods
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred cost			$ 0.2	$ 9.4
Private Brands
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred cost	$ 11.8
Restructuring And Related Cost Incurred Cash Outflows	84.5
Restructuring And Related Cost Incurred Noncash Charges	45.7
Restructuring and Related Cost, Incurred Cost From Inception	$ 130.2