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 |