Derivatives and Fair Value Measurements - Volume of Company 's Activity in Derivative Instruments (Detail) $ in Millions |
Jun. 30, 2025
USD ($)
T
gal
|
Dec. 31, 2024
USD ($)
T
gal
|
|---|---|---|
| Hot Roll Coil Swap Contracts [Member] | ||
| Derivatives Fair Value [Line Items] | ||
| Notional Amount | 17,204 | 31,658 |
| Aluminum Swap Contracts [Member] | ||
| Derivatives Fair Value [Line Items] | ||
| Notional Amount | 8,233 | 15,711 |
| Nickel Swap Contracts [Member] | ||
| Derivatives Fair Value [Line Items] | ||
| Notional Amount | 389 | 298 |
| Copper Swap Contracts [Member] | ||
| Derivatives Fair Value [Line Items] | ||
| Notional Amount | 2,274 | 1,319 |
| Natural Gas Swap Contracts [Member] | ||
| Derivatives Fair Value [Line Items] | ||
| Notional Amount | gal | 215,080 | 283,000 |
| Diesel Fuel Swap Contracts [Member] | ||
| Derivatives Fair Value [Line Items] | ||
| Notional Amount | gal | 1,916,000 | 1,176,000 |
| Foreign Exchange Contracts [Member] | ||
| Derivatives Fair Value [Line Items] | ||
| Derivative notional amount | $ | $ 3.4 | $ 1.6 |