Derivatives, Hedging Programs and Other Financial Instruments - Summary of Volume of Derivative and or Physical Delivery Commitments with Energy Companies (Details) - Scenario, Forecast	Dec. 31, 2026	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Natural Gas
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount, Percent of Required Need, Coverage	21.00%	26.00%	47.00%	50.00%	49.00%
Zinc
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount, Percent of Required Need, Coverage				3.00%	66.00%
Copper
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount, Percent of Required Need, Coverage					58.00%
Magnesium
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount, Percent of Required Need, Coverage			40.00%	100.00%	100.00%
Silicon
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount, Percent of Required Need, Coverage					100.00%
Electricity
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount, Percent of Required Need, Coverage				43.00%	71.00%