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Earnings Per Share (Schedule of Earnings Per Share, Basic and Diluted) (Additional Information) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 26, 2019
Dec. 27, 2018
Dec. 28, 2017
Earnings Per Share [Abstract]      
Dilutive Securities, Effect on Basic Earnings Per Share, Options and Restrictive Stock Units, Tax $ 0.0 $ 22.2 $ 42.3