LONG-LIVED ASSET IMPAIRMENT AND FACILITY CLOSURE COSTS Long-lived Asset Impairment and Facility Closure Costs (Details) - USD ($) $ in Millions	3 Months Ended
	Aug. 31, 2016	May 31, 2016
Restructuring Cost and Reserve [Line Items]
Nonrecurring impairment charge		$ 15.8
Foreign currency translation loss		$ (13.5)
Americas Recycling
Restructuring Cost and Reserve [Line Items]
Impairment of long-lived assets	$ 38.9