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Fair Value of FInancial Instruments Fair Value Options Quantitative Disclosure (Details) - USD ($) | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Minimum [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Electricity physical forward purchase | $ 35.00 | $ 16.66
Natural gas financial swaps | 2.71 | 2.02
Fnancial swaps - electricity | 54.17 | 26.76
Maximum [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Electricity physical forward purchase | 270.00 | 129.75
Natural gas financial swaps | 24.71 | 8.02
Fnancial swaps - electricity | 143.70 | 68.43
Weighted Average [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Electricity physical forward purchase | 101.27 | 43.73
Natural gas financial swaps | 4.42 | 2.81
Fnancial swaps - electricity | 104.21 | 52.46
Assets [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Electricity physical forward purchase | 52,000,000 | 0
Natural gas financial swaps | 6,000,000 | 5,000,000
Fnancial swaps - electricity | 11,000,000 | 1,000,000
Total commodity contracts | 69,000,000 | 6,000,000
Liabilities [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Electricity physical forward purchase | 93,000,000 | 90,000,000
Natural gas financial swaps | 8,000,000 | 1,000,000
Fnancial swaps - electricity | 0 | 0
Total commodity contracts | $ 101,000,000 | $ 91,000,000

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- Definition Electricity physical forward purchase + References No definition available. + Details
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- Definition Fnancial swaps - electricity + References No definition available. + Details
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- Definition Natural gas financial swaps + References No definition available. + Details
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