Additional Financial Information (Components of Interest) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
Aug. 26, 2018	May 31, 2020	May 26, 2019	May 27, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Interest expense		$ 49.3	$ 44.3	$ 152.4
Imputed interest on capital and financing leases		15.9
Imputed interest on capital and financing leases			11.9	11.4
Capitalized interest		(3.0)	(2.2)	(1.9)
Interest income		(4.9)	(3.8)	(0.8)
Interest, net		57.3	50.2	161.1
Loss on extinguishment of debt	$ 102.2	$ 0.0	$ 0.0	$ 102.2

Amount of interest expense on finance lease liability.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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

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Amount of the cost of borrowed funds accounted for as interest expense.

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The amount, during the lease term, of each minimum [capital] lease payment allocated to interest expense so as to produce a constant periodic rate of interest on the remaining balance of the capital lease obligation.

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The net amount of nonoperating interest income (expense).

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Amount, after discount, accretion and premium amortization, of interest income and dividend income classified as other.

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