Income Taxes (Schedule of Components of Income from Continuing Operations Before Income Taxes) (Details) - USD ($) $ in Millions	1 Months Ended	6 Months Ended		11 Months Ended	12 Months Ended
	Dec. 29, 2023	Dec. 30, 2022	Jun. 16, 2022	Nov. 14, 2023	Dec. 31, 2021
Operating Loss Carryforwards [Line Items]
Domestic	$ (0.8)	$ (32.8)	$ 33.7	$ 36.6	$ (33.7)
International	(0.6)	5.7	(57.6)	4.7	(12.7)
Current Income Tax Expense (Benefit)	(1.4)	(27.1)	(23.9)	41.3	(46.4)
Domestic	(6.1)	(44.6)	(82.3)	(300.6)	(59.5)
International	(0.5)	19.7	(391.1)	(18.5)	(0.4)
Deferred Income Tax Expense (Benefit)	(6.6)	(24.9)	(473.4)	(319.1)	(59.9)
Benefit from income taxes	(8.0)	(52.0)	(497.3)	(277.8)	(106.3)
Domestic	(46.1)	(359.4)	(2,883.3)	(3,628.8)	(512.2)
International	(0.1)	(290.9)	2,072.0	1,719.7	(317.6)
Loss from continuing operations before income taxes	(46.2)	(650.3)	(811.3)	(1,909.1)	(829.8)
Ireland
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	0.0	7.9	4.1	2.9	2.2
Non-U.K.
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	$ 6.9	$ 61.0	$ 0.1	$ 259.6	$ 1.2