Condensed Consolidated Statement of Changes in Shareholders' Equity Statement - USD ($) $ in Millions	Total	Ordinary Shares	Additional Paid-In Capital	Retained Earnings (Deficit)	Accumulated Other Comprehensive Loss	Treasury Stock, Common
Shares, Outstanding		94,300,000				9,600,000
Beginning balance at Dec. 31, 2021	$ 313.4	$ 18.9	$ 5,597.8	$ (3,678.9)	$ (8.3)	$ (1,616.1)
Net loss	(119.6)			(119.6)
Share-based compensation	1.2		1.2
Ending balance at Apr. 01, 2022	195.0	18.9	5,599.0	(3,798.5)	(8.3)	(1,616.1)
Beginning balance at Dec. 31, 2021	313.4	18.9	5,597.8	(3,678.9)	(8.3)	(1,616.1)
Net loss				(313.1)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent					(1.5)
Ending balance at Jun. 16, 2022	2,203.6	$ 0.1	2,203.5	0.0	0.0	$ 0.0
Shares, Outstanding		94,300,000				9,600,000
Beginning balance at Apr. 01, 2022	195.0	$ 18.9	5,599.0	(3,798.5)	(8.3)	$ (1,616.1)
Net loss	(193.5)			(193.5)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(1.5)				(1.5)
Share-based compensation	0.5		0.5
Cancellation of Predecessor equity	$ (0.5)	$ (18.9)	(5,599.5)	3,992.0	9.8	$ 1,616.1
Cancellation of Predecessor equity, Shares		(94,300,000)				(9,600,000)
Stock Issued During Period, Shares, New Issues	13,200,000
Stock Issued During Period, Value, New Issues	$ 2,189.7	$ 0.1	2,189.6
Adjustments to Additional Paid in Capital, Warrant Issued	13.9		13.9
Ending balance at Jun. 16, 2022	2,203.6	$ 0.1	2,203.5	0.0	0.0	$ 0.0
Shares, Outstanding		13,200,000				0
Net loss	(63.7)			(63.7)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(1.7)				(1.7)
Ending balance at Jul. 01, 2022	2,138.2	$ 0.1	2,203.5	(63.7)	(1.7)	$ 0.0
Beginning balance at Jun. 16, 2022	2,203.6	0.1	2,203.5	0.0	0.0	0.0
Net loss				(348.6)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent					(6.4)
Ending balance at Sep. 30, 2022	1,849.1	$ 0.1	2,204.0	(348.6)	(6.4)	$ 0.0
Shares, Outstanding		13,200,000				0
Beginning balance at Jul. 01, 2022	2,138.2	$ 0.1	2,203.5	(63.7)	(1.7)	$ 0.0
Net loss	(284.9)			(284.9)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(4.7)				(4.7)
Share-based compensation	0.5		0.5
Ending balance at Sep. 30, 2022	$ 1,849.1	$ 0.1	2,204.0	(348.6)	(6.4)	$ 0.0
Shares, Outstanding		13,200,000				0
Shares, Outstanding		13,200,000				0
Beginning balance, ordinary shares (in shares) at Dec. 30, 2022	13,170,932
Beginning balance at Dec. 30, 2022	$ 1,613.7	$ 0.1	2,191.0	(588.2)	10.8	$ 0.0
Net loss	(249.3)			(249.3)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(2.6)				(2.6)
Share-based compensation	2.6		2.6
Ending balance at Mar. 31, 2023	$ 1,364.4	0.1	2,193.6	(837.5)	8.2	0.0
Beginning balance, ordinary shares (in shares) at Dec. 30, 2022	13,170,932
Beginning balance at Dec. 30, 2022	$ 1,613.7	0.1	2,191.0	(588.2)	10.8	0.0
Net loss				(2,721.9)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent					2.7
Ending balance, ordinary shares (in shares) at Sep. 29, 2023	13,478,506
Ending balance at Sep. 29, 2023	$ (1,098.1)	$ 0.1	2,198.5	(3,310.1)	13.5	$ (0.1)
Shares, Outstanding		13,200,000				0
Beginning balance at Mar. 31, 2023	1,364.4	$ 0.1	2,193.6	(837.5)	8.2	$ 0.0
Net loss	(747.8)			(747.8)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	$ 6.4				6.4
Vesting of restricted shares (in usd)						$ (0.1)
Vesting of restricted shares (in shares)	(100,000)	200,000				100,000
Share-based compensation	$ 2.5		2.5
Ending balance at Jun. 30, 2023	625.4	$ 0.1	2,196.1	(1,585.3)	14.6	$ (0.1)
Shares, Outstanding		13,400,000				100,000
Net loss	(1,724.8)			(1,724.8)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	$ (1.1)				(1.1)
Vesting of restricted shares (in shares)	0	100,000
Share-based compensation	$ 2.4		2.4
Ending balance, ordinary shares (in shares) at Sep. 29, 2023	13,478,506
Ending balance at Sep. 29, 2023	$ (1,098.1)	$ 0.1	$ 2,198.5	$ (3,310.1)	$ 13.5	$ (0.1)
Shares, Outstanding		13,500,000				100,000