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Summary of Significant Accounting Policies - Operations and Maintenance (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Operating Expense |  |  |
Results of Operations for Oil and Gas Producing Activities, by Geographic Area [Line Items] |  |  |
Results of Operations, Expense from Oil and Gas Producing Activities | $ 393 | $ 367 | $ 180

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- Definition The amount of expenses related to oil and gas producing activities. + References No definition available. + Details
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- Details
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