Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 27, 2025	Jun. 28, 2024	Jun. 27, 2025	Jun. 28, 2024	Dec. 27, 2024
Income Taxes [Line Items]
Income tax expense	$ (10.7)	$ (13.9)	$ (14.6)	$ (13.2)
Effective tax rate	82.30%	(47.10%)	(132.70%)	(13.80%)
Unrecognized tax benefits	$ 32.2		$ 32.2		$ 31.1
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	(13.0)	$ 29.5	11.0	$ 95.8
Income Taxes Paid			5.2	$ 2.7
Decrease in Unrecognized Tax Benefits is Reasonably Possible	5.0		5.0
Significant Change in Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued That Would Impact Effective Tax Rate, Estimated Range of Change, Upper Bound	$ 3.8		$ 3.8
IRELAND
Income Taxes [Line Items]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent		12.50%