SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Feb. 28, 2016	Feb. 22, 2015	Feb. 28, 2016	Feb. 22, 2015
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Interest expense, net	$ (76.9)	$ (79.8)	$ (236.8)	$ (241.8)
Selling, general and administrative expenses	(489.6)	(360.3)	(1,419.7)	(1,146.1)
Income (loss) from discontinued operations, net of tax	(18.7)	1,165.0	1,307.9	978.1
Equity method investment earnings	(44.7)	(33.0)	(107.0)	(92.6)
Total before tax	187.6	212.3	521.1	525.8
Income tax expense (benefit)	(91.0)	(100.6)	(259.3)	(247.9)
Reclassification out of accumulated other comprehensive loss | Cash flow hedges
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Interest expense, net	(2.1)	0.0	(2.1)	(0.5)
Total before tax	(2.1)	0.0	(2.1)	(0.5)
Income tax expense (benefit)	0.8	0.0	0.8	0.2
Net of tax	(1.3)	0.0	(1.3)	(0.3)
Reclassification out of accumulated other comprehensive loss | Net prior service cost
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Selling, general and administrative expenses	(1.2)	(1.1)	(3.8)	(3.2)
Reclassification out of accumulated other comprehensive loss | Divestiture of Private Brands
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Income (loss) from discontinued operations, net of tax	(4.3)	0.0	(4.3)	0.0
Reclassification out of accumulated other comprehensive loss | Pension settlement of equity method investment
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Equity method investment earnings	(5.4)	0.0	(5.4)	0.0
Reclassification out of accumulated other comprehensive loss | Net actuarial loss
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Selling, general and administrative expenses	0.0	0.9	0.0	2.6
Reclassification out of accumulated other comprehensive loss | Amortization of pension and postretirement healthcare liabilities
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Total before tax	(10.9)	(0.2)	(13.5)	(0.6)
Income tax expense (benefit)	3.4	0.1	4.4	0.2
Net of tax	(7.5)	(0.1)	(9.1)	(0.4)
Reclassification out of accumulated other comprehensive loss | Currency translation losses
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Income (loss) from discontinued operations, net of tax	(73.4)	0.0	(73.4)	0.0
Total before tax	73.4	0.0	73.4	0.0
Income tax expense (benefit)	0.0	0.0	0.0	0.0
Net of tax	$ 73.4	$ 0.0	$ 73.4	$ 0.0