LONG-TERM DEBT AND REVOLVING CREDIT FACILITY - Schedule of Net Interest Expense from Continuing Operations (Details) - USD ($) $ in Millions	3 Months Ended
Aug. 26, 2018	Aug. 27, 2017
Debt Disclosure [Abstract]
Long-term debt	$ 42.9	$ 38.1
Short-term debt	7.5	0.4
Interest income	(0.6)	(0.9)
Interest capitalized	(0.8)	(1.2)
Net interest expense	$ 49.0	$ 36.4

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Amount of interest costs capitalized disclosed as an adjusting item to interest costs incurred.

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Aggregate amount of interest paid or due on all long-term debt.

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The aggregate interest expense incurred on short-term borrowings including commercial paper and Federal funds purchased and securities sold under agreements to repurchase.

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The net amount of operating interest income (expense).

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Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities.

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