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Income Taxes (Narrative) (Details) - USD ($)
$ in Millions
12 Months Ended
May 26, 2019
May 27, 2018
May 28, 2017
Tax Credit Carryforward [Line Items]      
Tax Cuts and Jobs Act of 2017, net discrete expense (benefit)   $ (523.5)  
Unremitted foreign earnings $ 2,300.0    
Reclassification of certain income tax effects   $ 329.4  
Federal income tax rate 21.00% 29.40% 35.00%
Unrecognized tax benefits that would affect effective tax rate $ 81.2    
Unrecognized tax benefits and accrued interest expected to be paid within the next 12 months 2.0    
Tax-related net interest and penalties benefits recognized 0.5 $ 3.1  
Tax-related net interest and penalties accrued 26.0 27.3  
Tax adjustments for settlements and unusual provisions   $ 40.9  
Tax Cuts And Jobs Act Of 2017 Income Tax Expense Benefit $ 7.2    
Minimum [Member]      
Tax Credit Carryforward [Line Items]      
Number of open tax years for certain U.S. tax jurisdictions 3 years    
Maximum [Member]      
Tax Credit Carryforward [Line Items]      
Number of open tax years for certain U.S. tax jurisdictions 5 years