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Summary Of Significant Accounting Policies - (Schedule of Operating Revenues) (Parenthetical) (Details) - USD ($)
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Disaggregation of Revenue [Abstract]      
TEC Sales to Non member $ 8,900,000 $ 29,400,000 $ 0