Derivative Financial Instruments - Schedule of Outstanding Copper Swap Contracts (Detail) - Copper Swap Contracts [Member] £ in Millions, $ in Millions	Dec. 31, 2023 GBP (£)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 GBP (£)	Dec. 31, 2022 USD ($)
Derivatives Fair Value [Line Items]
Copper Swap Contracts Units Outstanding | £	£ 41.2		£ 27.3
Net Fair Value - Asset | $		$ 4.1		$ 3.1
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member]
Derivatives Fair Value [Line Items]
Copper Swap Contracts Units Outstanding | £	31.7		21.3
Net Fair Value - Asset | $		2.6		2.5
Not Designated as Hedging Instrument [Member]
Derivatives Fair Value [Line Items]
Copper Swap Contracts Units Outstanding | £	£ 9.5		£ 6.0
Net Fair Value - Asset | $		$ 1.5		$ 0.6