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Derivative Financial Instruments (Details 3) - USD ($) | Dec. 31, 2025 | Dec. 31, 2024
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Fair values of derivatives on consolidated balance sheets |  |
Cash collateral on deposit with derivative counterparties | $ 0 | $ 0
Aggregate fair value of the derivative instruments with credit risk related contingent features in a net liability position | 4,000,000 | 0
Cash collateral on deposit with derivative counterparties | 0 | 0
Derivatives not designated as cash flow hedges |  |
Fair values of derivatives on consolidated balance sheets |  |
Cash collateral on deposit with derivative counterparties | 0 | 0
Cash collateral on deposit with derivative counterparties | 0 | 0
Derivatives not designated as cash flow hedges | Natural gas derivatives |  |
Fair values of derivatives on consolidated balance sheets |  |
Derivative Asset, Current | 0 | 4,000,000
Derivative Liability, Current | (5,000,000) | (3,000,000)
Derivative Asset, Noncurrent | 1,000,000 | 0
Derivative Liability, Noncurrent | $ 0 | $ 0

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