Income Taxes (Schedule of Significant Components of Income Taxes Related to Continuing Operations) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 25, 2020	Dec. 27, 2019
Current:
Domestic	$ (33.7)	$ 0.1	$ 0.1
International	(12.7)	(375.4)	21.7
Current income tax (benefit) provision	(46.4)	(375.3)	21.8
Deferred:
Domestic	(59.5)	102.2	(1.1)
International	(0.4)	282.0	(605.0)
Deferred income tax (benefit) provision	(59.9)	384.2	(606.1)
Provision for (benefit from) income taxes	(106.3)	8.9	$ (584.3)
Increase (Decrease) Tax Expense (Benefit), Change in Operating Income	92.9	30.0
Increase (Decrease) Tax Benefit, Medicaid Lawsuit	$ 48.9	48.9
Foreign tax provision, refundable credits		1.0
Foreign Tax Benefit, Carryback Claims		$ 281.5

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