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v3.23.1

Derivative Financial Instruments (Details 2) MMBTU in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2023 USD ($) MMBTU | Dec. 31, 2022 USD ($) MMBTU
Derivative Instruments and Hedging Activities Disclosure [Abstract] |  |
Notional Nonmonetary Amount of Price Risk Derivative Instruments Not Designated as Hedging Instruments | MMBTU | 18.9 | 66.3
Percentage of Consumption Hedged by Derivatives | 69.00% |
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 | 1,000,000 | 73,000,000
Cash collateral on deposit with derivative counterparties | 0 | 0
Not Designated as Hedging Instrument |  |
Fair values of derivatives on consolidated balance sheets |  |
Derivative Asset | 4,000,000 | 12,000,000
Derivative Liability | 5,000,000 | 85,000,000
Cash collateral on deposit with derivative counterparties | 0 | 0
Cash collateral on deposit with derivative counterparties | 0 | 0
Not Designated as Hedging Instrument | Energy Related Derivative |  |
Fair values of derivatives on consolidated balance sheets |  |
Derivative Asset | 4,000,000 | 12,000,000
Derivative Liability | 5,000,000 | $ 85,000,000
Designated as Hedging Instrument |  |
Fair values of derivatives on consolidated balance sheets |  |
Derivative Asset | $ 0 |

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