Stock-Based Compensation (Darden Stock Unit Activity) (Narrative) (Details) - Darden stock units - USD ($) $ in Millions	12 Months Ended
May 26, 2019	May 27, 2018
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Line Items]
Total stock unit liability	$ 80.6	$ 62.7
Unrecognized compensation cost related to unvested stock options granted	$ 42.4
Unrecognized compensation cost, period of recognition, in years (years)	2 years 3 months 18 days
Fair market value on grant date	$ 36.2
Other Current Liabilities
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Line Items]
Current stock unit liability	30.7	26.1
Other Liabilities
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Line Items]
Noncurrent stock unit liability	$ 49.9	$ 36.6

Aggregate carrying value as of the balance sheet date of the liabilities for stock option plans and other equity-based compensation arrangements payable within one year (or the operating cycle, if longer).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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-Paragraph 2
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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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