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Stock-Based Compensation (Stock Option Activity) (Narrative) (Details) - USD ($)
$ in Millions
12 Months Ended
May 28, 2017
May 29, 2016
May 31, 2015
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Line Items]      
Total intrinsic value of options exercised $ 99.1 $ 73.6 $ 90.2
Cash received from option exercises $ 107.8 $ 94.4 $ 154.6
Vesting period (years) 4 years    
Maximum terms of awards (years) 10 years    
Darden stock units      
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Line Items]      
Unrecognized compensation cost related to unvested stock options granted $ 35.1    
Fair market value on grant date 18.4    
Stock options      
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Line Items]      
Unrecognized compensation cost related to unvested stock options granted $ 8.0    
Unrecognized compensation cost, period of recognition, in years (years) 2 years    
Fair market value on grant date $ 5.5    
Minimum | Darden stock units      
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Line Items]      
Vesting period (years) 4 years    
Minimum | Restricted Stock and Restricted Stock Units      
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Line Items]      
Vesting period (years) 1 year    
Maximum | Darden stock units      
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Line Items]      
Vesting period (years) 5 years    
Maximum | Restricted Stock and Restricted Stock Units      
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Line Items]      
Vesting period (years) 4 years