Fair Value Measurements (Carrying Value And Fair Value Of Long-Term Debt) (Details)	12 Months Ended
May 28, 2017 USD ($) restaurant	May 27, 2018 USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying value of long-term debt	$ 936,600,000	$ 926,500,000
Number of underperforming restaurants \| restaurant	4
Impairment of long-lived assets, held-for-use	$ 3,700,000.0
Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying value of long-term debt	936,600,000	926,500,000
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of long-term debt	1,050,000,000	$ 922,000,000
Fair Value, Measurements, Nonrecurring \| Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets held-for-sale, longlived, fair value disclosure	3,700,000
Fair Value, Measurements, Nonrecurring \| Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets held-for-sale, longlived, fair value disclosure	$ 0

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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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