Income Taxes (Schedule of Components of Income from Continuing Operations Before Income Taxes) (Details) - USD ($) $ in Millions	6 Months Ended		12 Months Ended
	Dec. 30, 2022	Jun. 16, 2022	Dec. 31, 2021	Dec. 25, 2020
Operating Loss Carryforwards [Line Items]
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount				$ 204.9
Domestic	$ (32.8)	$ 33.7	$ (33.7)	0.1
International	5.7	(57.6)	(12.7)	(375.4)
Current Income Tax Expense (Benefit)	(27.1)	(23.9)	(46.4)	(375.3)
Domestic	(44.6)	(82.3)	(59.5)	102.2
International	19.7	(391.1)	(0.4)	282.0
Deferred Income Tax Expense (Benefit)	(24.9)	(473.4)	(59.9)	384.2
(Benefit) expense from income taxes	(52.0)	(497.3)	(106.3)	8.9
Domestic	(359.4)	(2,883.3)	(512.2)	(656.9)
International	(290.9)	2,072.0	(317.6)	(303.9)
Loss from continuing operations before income taxes	(650.3)	(811.3)	(829.8)	(960.8)
Ireland
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	7.9	4.1	2.2	0.2
Non-U.K.
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	$ 61.0	$ 0.1	$ 1.2	$ 33.4