Contingencies (Details) $ in Millions	3 Months Ended
	Mar. 29, 2025 USD ($)
Contingencies
Environmental liabilities	$ 24.4
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration]	Accrued Liabilities, Current, Other Liabilities, Noncurrent
Recovery of direct costs	$ 47.4
Huntsville Site
Contingencies
Environmental remediation expense to date	9.1
Project expenditures, low estimate	5.3
Project expenditures, high estimate	17.0
Norco Site
Contingencies
Environmental remediation expense to date	86.8
Project expenditures, low estimate	19.1
Project expenditures, high estimate	$ 35.2