Derivative Financial Instruments - Summary of Unrealized (Gain) Loss from Hedging Contracts Where Hedge Accounting Was Not Elected (Details) - Not Designated as Hedging Instrument - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Copper Swap Contracts | ||||
| Derivative [Line Items] | ||||
| (Gain) loss from contracts where hedge accounting was not elected | $ (2.1) | $ 0.6 | $ (9.4) | $ 9.6 |
| Heating Oil Contracts | ||||
| Derivative [Line Items] | ||||
| (Gain) loss from contracts where hedge accounting was not elected | (0.8) | 0.0 | 2.6 | 0.2 |
| Foreign currency forward contracts | ||||
| Derivative [Line Items] | ||||
| (Gain) loss from contracts where hedge accounting was not elected | $ 0.0 | $ 0.1 | $ (0.1) | $ 0.6 |