Condensed Consolidated Statements of Changes in Shareholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Ordinary Shares	Treasury Shares	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)
Beginning balance, ordinary shares (in shares) at Dec. 27, 2024		19.7
Beginning balance at Dec. 27, 2024	$ 1,645.8	$ 0.2	$ 0.0	$ 1,199.8	$ 439.7	$ 6.1
Beginning balance, treasury stock (in shares) at Dec. 27, 2024			0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(27.7)				(27.7)
Other Comprehensive income (loss)	3.1					3.1
Vesting of restricted share units, net of tax withholdings (in shares)		0.1
Vesting of restricted share units, net of tax withholdings	(1.0)		$ (1.9)	0.9
Share cancellation	0.1			(0.8)	0.9
Share-based compensation	9.7			9.7
Ending balance, ordinary shares (in shares) at Mar. 28, 2025		19.8
Ending balance at Mar. 28, 2025	1,630.0	$ 0.2	$ (1.9)	1,209.6	412.9	9.2
Ending balance, treasury stock (in shares) at Mar. 28, 2025			0.0
Beginning balance, ordinary shares (in shares) at Dec. 31, 2025		39.5
Beginning balance at Dec. 31, 2025	2,065.2	$ 0.4	$ 0.0	2,115.5	(51.7)	1.0
Beginning balance, treasury stock (in shares) at Dec. 31, 2025			0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(113.5)				(113.5)
Other Comprehensive income (loss)	(2.5)					(2.5)
Vesting of restricted share units, net of tax withholdings (in shares)		0.1
Vesting of restricted share units, net of tax withholdings	(1.9)			(1.9)
Share-based compensation	11.1			11.1
Ending balance, ordinary shares (in shares) at Mar. 31, 2026		39.6
Ending balance at Mar. 31, 2026	$ 1,958.4	$ 0.4	$ 0.0	$ 2,124.7	$ (165.2)	$ (1.5)
Ending balance, treasury stock (in shares) at Mar. 31, 2026			0.0