EARNINGS PER SHARE - Variable Interest Entity - Consolidated - Acquisition - Pro Forma (Details) - Lamb Weston BSW, LLC - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	6 Months Ended
	Nov. 25, 2018	Nov. 25, 2018
Pro Forma Information
Net income available to common stockholders	$ (9.5)	$ (9.5)
Basic and diluted earning per share (in dollars per share)	$ (0.06)	$ (0.06)