INCOME TAXES - Uncertain Tax Positions - Changes in Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	May 27, 2018	May 28, 2017	May 29, 2016
Uncertain Tax Positions
Beginning balance	$ 6.9	$ 3.8	$ 4.3
Decreases from positions established during prior fiscal years			(0.5)
Increases from positions established during current and prior fiscal years	7.9	2.2	0.6
Decreases relating to settlements with taxing authorities			(0.2)
Reductions resulting from lapse of applicable statute of limitations	(1.6)	(0.9)	(0.3)
Adjustments resulting from the Separation		1.8	(0.1)
Ending balance	$ 13.2	$ 6.9	$ 3.8