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Conventional Natural Gas Producing Activities (Unaudited) - Schedule of Estimated Future Net Cash Flows from Natural Gas Reserves (Details) - Italian Gas Assets [Member] - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
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Schedule of Estimated Future Net Cash Flows from Natural Gas Reserves [Line Items] |  |  |
Future cash inflows | [1] | $ 206,696 | $ 249,944
Future production and development costs | [1] | (76,363) | (117,452)
Future income tax expenses | [1] | (22,793) | (41,888)
Future net cash flows |  | 107,540 | 90,604
10% annual discount for estimated timing of cash flows |  | (18,507) | (20,680)
Standardized measure of discounted future net cash flows |  | 89,033 | 69,924
Total consolidated interests in the standardized measure of discounted future cash flows |  | $ 89,033 | $ 69,924
[1] | Gas prices are based on a reference price. Gross gas price is calculated as the unweighted arithmetic average of the first day-of-the-month price for each month within a 12-month period prior to the end of the reporting period. The volume-weighted average price attributable to the estimated proved reserves was $11.73 and $14.13 per thousand cubic feet of gas for the year ended December 31, 2024, and 2023, respectively. Future net cash flows were computed using the volume-weighted average price used in estimating AleAnna’s proved gas reserves, year-end costs, and statutory tax rates that relate to existing proved gas reserves.

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