LONG-TERM DEBT AND REVOLVING CREDIT FACILITY - Schedule of Net Interest Expense (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Feb. 23, 2020	Feb. 24, 2019	Feb. 23, 2020	Feb. 24, 2019
Debt Disclosure [Abstract]
Long-term debt	$ 120.6	$ 133.4	$ 368.1	$ 252.5
Short-term debt			0.9	15.0
Interest income	(1.3)	(1.9)	(2.3)	(5.0)
Interest capitalized	(1.6)	(0.6)	(4.9)	(2.0)
Net interest expense	$ 117.7	$ 130.9	$ 361.8	$ 260.5

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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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