Fair Value Measurements (Carrying Value And Fair Value Of Long-Term Debt) (Details) $ in Millions	12 Months Ended
May 29, 2016 USD ($) restaurant	May 28, 2017 USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying value of long-term debt	$ 440.0	$ 936.6
Number of underperforming restaurants \| restaurant	2
Impairment of long-lived assets held-for-use	$ 5.4
Impairment of long-lived assets to be disposed of	0.6
Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying value of long-term debt	440.0	936.6
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of long-term debt	499.5	$ 1,050.0
Fair Value, Measurements, Nonrecurring \| Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Non-financial assets measured at fair value	5.4
Assets held-for-sale, long lived, fair value disclosure	17.5
Fair Value, Measurements, Nonrecurring \| Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets held-for-sale, long lived, fair value disclosure	$ 16.9

Nonfinancial Assets Fair Value Disclosure

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Number of Underperforming Restaurants

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Fair value portion of assets classified as held for sale.

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Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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