SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($) $ in Millions	3 Months Ended
	Aug. 30, 2015	Aug. 24, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Interest expense, net	$ 80.3	$ 83.3
Total before tax	(167.2)	(96.2)
Income tax expense	84.9	43.1
Reclassification out of accumulated other comprehensive income | Cash flow hedges
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Interest expense, net	0.0	(0.5)
Total before tax	0.0	(0.5)
Income tax expense	0.0	0.2
Net of tax	0.0	(0.3)
Reclassification out of accumulated other comprehensive income | Amortization of pension and postretirement healthcare liabilities:
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Net prior service benefit	(1.3)	(1.1)
Net actuarial losses	0.0	0.9
Total before tax	(1.3)	(0.2)
Income tax expense	0.5	0.1
Net of tax	$ (0.8)	$ (0.1)