SEGMENTS - Other Information - Net Sales by Geographical Area (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	May 31, 2020	Feb. 23, 2020	Nov. 24, 2019	Aug. 25, 2019	May 26, 2019	Feb. 24, 2019	Nov. 25, 2018	Aug. 26, 2018	May 31, 2020	May 26, 2019	May 27, 2018
Segments
Net sales	$ 846.9	$ 937.3	$ 1,019.2	$ 989.0	$ 1,003.4	$ 926.8	$ 911.4	$ 914.9	$ 3,792.4	$ 3,756.5	$ 3,423.7
Non-US
Segments
Net sales									$ 752.9	$ 742.7	$ 665.8