Contingencies (Details) $ in Millions	9 Months Ended
	Sep. 27, 2025 USD ($)
Contingencies
Environmental liabilities	$ 22.7
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration]	Accrued Liabilities, Current, Other Liabilities, Noncurrent
Recovery of direct costs	$ 157.4
Huntsville Site
Contingencies
Environmental remediation expense to date	9.3
Project expenditures, low estimate	5.1
Project expenditures, high estimate	16.8
Norco Site
Contingencies
Environmental remediation expense to date	88.3
Project expenditures, low estimate	17.6
Project expenditures, high estimate	$ 33.7