INCOME TAXES - Uncertain Tax Positions - Changes in Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	May 28, 2017	May 29, 2016
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning Balance	$ 3.8	$ 4.3
Decreases from positions established during prior fiscal years		(0.5)
Increases from positions established during current and prior fiscal years	2.2	0.6
Decreases relating to settlements with taxing authorities		(0.2)
Reductions resulting from lapse of applicable statute of limitations	(0.9)	(0.3)
Other adjustments to liability resulting from the Separation	1.8	(0.1)
Ending Balance	$ 6.9	$ 3.8