Income Taxes (Schedule of Unrecognized Tax Benefits Balance Sheet Location) (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 25, 2020	Dec. 27, 2019	Dec. 28, 2018
Income Tax Contingency [Line Items]
Unrecognized Tax Benefits	$ 333.5	$ 349.0	$ 398.6	$ 287.7
Other Assets [Member]
Income Tax Contingency [Line Items]
Unrecognized Tax Benefits	255.7	256.4
Other Income Tax Liabilities
Income Tax Contingency [Line Items]
Unrecognized Tax Benefits	64.1	83.2
Deferred income tax liability (non-current)
Income Tax Contingency [Line Items]
Unrecognized Tax Benefits	13.7	9.4
Liabilities, Total [Member]
Income Tax Contingency [Line Items]
Unrecognized Tax Benefits	$ 333.5	$ 349.0