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Fair Value of Financial Instruments Fair Value Options Quantitative Disclosure (Details) - USD ($) | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Low [Member] |  |
Commodity Contracts |  |
Electricity physical forwards | $ 24.00 | $ 37.53
Natural gas financial swaps | 2.09 | 2.25
Financial swaps - electricity | 55.00 | 65.30
High [Member] |  |
Commodity Contracts |  |
Electricity physical forwards | 147.00 | 153.33
Natural gas financial swaps | 4.76 | 8.89
Financial swaps - electricity | 147.00 | 107.31
Weighted Average [Member] |  |
Commodity Contracts |  |
Electricity physical forwards | 80.71 | 84.58
Natural gas financial swaps | 2.65 | 3.37
Financial swaps - electricity | 92.67 | 91.33
Assets [Member] |  |
Commodity Contracts |  |
Electricity physical forwards | 6,000,000 | 14,000,000
Natural gas financial swaps | 0 | 0
Financial swaps - electricity | 4,000,000 | 0
Total commodity contracts | 10,000,000 | 14,000,000
Liabilities [Member] |  |
Commodity Contracts |  |
Electricity physical forwards | 32,000,000 | 43,000,000
Natural gas financial swaps | 23,000,000 | 16,000,000
Financial swaps - electricity | 0 | 0
Total commodity contracts | $ 55,000,000 | $ 59,000,000

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