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LONG-TERM DEBT AND REVOLVING CREDIT FACILITY - Schedule of Net Interest Expense from Continuing Operations (Details) - USD ($)
$ in Millions
3 Months Ended
Aug. 27, 2017
Aug. 28, 2016
Debt Disclosure [Abstract]    
Long-term debt $ 38.1 $ 60.9
Short-term debt 0.4 0.2
Interest income (0.9) (0.7)
Interest capitalized (1.2) (2.2)
Net interest expense $ 36.4 $ 58.2