SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Summary of Reclassifications From Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Nov. 27, 2016	Nov. 29, 2015	Nov. 27, 2016	Nov. 29, 2015
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Selling, general and administrative expenses	$ 417.9	$ 483.2	$ 649.6	$ 846.0
Income tax expense	(78.4)	(43.1)	(247.6)	(92.4)
Net income (loss)	125.9	159.3	315.9	(993.1)
Reclassification out of accumulated other comprehensive loss | Net prior service benefit
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Selling, general and administrative expenses	(0.9)	(1.3)	(1.8)	(2.6)
Total before tax	(0.9)	(1.3)	(1.8)	(2.6)
Income tax expense	(0.4)	(0.5)	(0.7)	(1.0)
Net income (loss)	$ 0.5	$ 0.8	$ 1.1	$ 1.6