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Stock-Based Compensation Plans (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 12 Months Ended
Mar. 29, 2020
Mar. 31, 2019
Apr. 01, 2018
Dec. 27, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock option compensation expense $ 7.4 $ 8.9    
Stock Options        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Weighted average grant date fair value (in USD per share) $ 106.26      
Performance Shares        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares issued (in shares) 7,673 8,586 6,481  
Performance measurement period     3 years  
Employee | Stock Options        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting period over which employee stock option grants are evenly expensed 3 years      
Scenario, Forecast        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Expected stock option compensation expense       $ 25.6
Maximum | Performance Shares        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares available for grant (in shares) 59,278