STOCKHOLDERS' EQUITY - Changes in AOCI (Details) - USD ($) $ in Millions	12 Months Ended
	May 28, 2017	May 29, 2016
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at the beginning of the period	$ 1,400.6	$ 1,357.5
Balance at the end of the period	(647.2)	1,400.6
Accumulated Other Comprehensive Loss
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at the beginning of the period	(9.2)	(5.1)
Other comprehensive income before reclassifications, net of tax	(0.1)	(0.1)
Amounts reclassified from AOCI, net of tax		(4.0)
Net current-period other comprehensive income	(0.1)	(4.1)
Balance at the end of the period	(9.3)	(9.2)
Foreign Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at the beginning of the period	(9.2)	(3.7)
Other comprehensive income before reclassifications, net of tax	(1.1)	(5.5)
Net current-period other comprehensive income	(1.1)	(5.5)
Balance at the end of the period	(10.3)	(9.2)
Pension and Other Post-employment Benefits
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at the beginning of the period		(1.4)
Other comprehensive income before reclassifications, net of tax	1.0	5.4
Amounts reclassified from AOCI, net of tax		(4.0)
Net current-period other comprehensive income	1.0	$ 1.4
Balance at the end of the period	$ 1.0