STOCKHOLDERS' EQUITY - Changes in AOCI (Details) $ in Millions	3 Months Ended
	Aug. 27, 2017 USD ($)
Changes in AOCI:
Balance at the beginning of the period	$ (647.2)
Balance at the end of the period	(575.7)
Accumulated Other Comprehensive Loss
Changes in AOCI:
Balance at the beginning of the period	(9.3)
Other comprehensive income before reclassifications, net of tax	15.2
Net current-period other comprehensive income	15.2
Balance at the end of the period	5.9
Foreign Currency Translation Gains (Losses)
Changes in AOCI:
Balance at the beginning of the period	(10.3)
Other comprehensive income before reclassifications, net of tax	15.2
Net current-period other comprehensive income	15.2
Balance at the end of the period	4.9
Pension and Other Post-employment Benefits
Changes in AOCI:
Balance at the beginning of the period	1.0
Balance at the end of the period	$ 1.0