Fair Value Measurements - Narrative (Details)	12 Months Ended
May 26, 2019 USD ($) restaurant	May 27, 2018 USD ($) restaurant
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying value of long-term debt	$ 927,700,000	$ 926,500,000
Long-lived assets	2,552,600,000	2,429,800,000
Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying value of long-term debt	927,700,000	926,500,000
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of long-term debt	955,700,000	922,000,000.0
Significant Unobservable Inputs (Level 3) \| Four underperforming restaurants \| Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-lived assets	21,700,000	3,700,000
Assets held-for-sale, long-lived, fair value disclosure	$ 2,500,000	$ 0
Number of underperforming restaurants \| restaurant	7	4
Impairment of long-lived assets, held-for-use	$ 19,200,000	$ 3,700,000

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- Definition

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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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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