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Derivative Instruments and Hedging Activities (Notional and Fair Values of Derivative Contracts Designated and Not Designated as Hedging Instruments) (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended
Aug. 25, 2019
May 26, 2019
Derivatives, Fair Value [Line Items]    
Derivative contracts, derivative assets, fair value $ 4.8 $ 0.1
Derivative contracts, derivative liabilities, fair value 1.0 0.9
Equity forwards    
Derivatives, Fair Value [Line Items]    
Derivative contracts, derivative assets, fair value 4.8 0.0
Derivative contracts, derivative liabilities, fair value $ 0.0 0.8
Equity forwards | Designated as Hedging Instruments    
Derivatives, Fair Value [Line Items]    
Derivative contracts, number of shares outstanding 0.4  
Derivative contracts, weighted-average forward rates (in dollars per share) $ 100.51  
Derivative contracts, notional $ 38.6  
Derivative contracts, derivative assets, fair value 2.2 0.0
Derivative contracts, derivative liabilities, fair value $ 0.0 0.3
Equity forwards | Not Designated as Hedging Instruments    
Derivatives, Fair Value [Line Items]    
Derivative contracts, number of shares outstanding 0.5  
Derivative contracts, weighted-average forward rates (in dollars per share) $ 81.76  
Derivative contracts, notional $ 38.6  
Derivative contracts, derivative assets, fair value 2.6 0.0
Derivative contracts, derivative liabilities, fair value 0.0 0.5
Commodity contracts    
Derivatives, Fair Value [Line Items]    
Derivative contracts, notional 9.6  
Derivative contracts, derivative assets, fair value 0.0 0.1
Derivative contracts, derivative liabilities, fair value $ 1.0 $ 0.1