v3.25.2

Derivatives and Fair Value Measurements - Location and Fair Value Amount of Derivative Instruments (Detail) - Level 2 [Member] - USD ($) $ in Millions	Jun. 30, 2025	Dec. 31, 2024
Derivatives Fair Value [Line Items]
Asset Derivatives, Fair Value	$ 4.9	$ 2.0
Liability Derivatives, Fair Value	1.0	2.0
Derivatives Not Designated as Hedging Instruments under ASC 815 [Member] \| Metal Commodity Contracts [Member]
Derivatives Fair Value [Line Items]
Asset Derivatives, Fair Value	$ 4.7	$ 1.8
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Prepaid Expense and Other Assets, Current	Prepaid Expense and Other Assets, Current
Derivatives Not Designated as Hedging Instruments under ASC 815 [Member] \| Metal Commodity Contracts [Member] \| Other Accrued Liabilities [Member]
Derivatives Fair Value [Line Items]
Liability Derivatives, Fair Value	$ 0.9	$ 2.0
Derivatives Not Designated as Hedging Instruments under ASC 815 [Member] \| Energy Commodity Contracts [Member]
Derivatives Fair Value [Line Items]
Asset Derivatives, Fair Value	$ 0.2	$ 0.1
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Prepaid Expense and Other Assets, Current	Prepaid Expense and Other Assets, Current
Derivatives Not Designated as Hedging Instruments under ASC 815 [Member] \| Foreign Currency Exchange Contracts [Member]
Derivatives Fair Value [Line Items]
Asset Derivatives, Fair Value		$ 0.1
Derivative Asset, Statement of Financial Position [Extensible Enumeration]		Prepaid Expense and Other Assets, Current
Derivatives Not Designated as Hedging Instruments under ASC 815 [Member] \| Foreign Currency Exchange Contracts [Member] \| Other Accrued Liabilities [Member]
Derivatives Fair Value [Line Items]
Liability Derivatives, Fair Value	$ 0.1

Indicates line item in statement of financial position that includes derivative asset.

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