RESTRUCTURING ACTIVITIES (Narrative) (Details) $ in Millions	3 Months Ended			9 Months Ended
	Feb. 28, 2016 USD ($)	Nov. 29, 2015 USD ($) building	Feb. 22, 2015 USD ($)	Feb. 28, 2016 USD ($)	Feb. 22, 2015 USD ($)
Private Brands
Restructuring Cost and Reserve [Line Items]
Recognized charges	$ 1.4			$ 11.8
Incurred cash outflows from plan inception	84.5			84.5
Incurred non-cash charges from plan inception	45.7			45.7
Pre-tax expenses from plan inception	130.2			130.2
SCAE Plan
Restructuring Cost and Reserve [Line Items]
Approved expenses (up to)	739.0			739.0
Expected charges	525.3			525.3
Cash charges incurred or expect to incur from plan inception	395.5			395.5
Non-cash charges incurred or expect to incur from plan inception	129.8			129.8
Recognized charges	109.1		$ 9.9	259.5	$ 35.9
Expected cash outflows	89.5			181.9
Expected non-cash charges	19.6			77.6
Number of buildings | building		2
Charge for early termination of leases		$ 55.6
Financing lease obligation		$ 74.2
Incurred cash outflows from plan inception	234.7			234.7
Incurred non-cash charges from plan inception	$ 103.8			$ 103.8