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Supplemental Information on Oil And Gas Producing Activities (Unaudited) - Additional Information (Detail) | 12 Months Ended |
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Dec. 31, 2023 MMBoe Bcf MMBbls | Dec. 31, 2022 MMBbls Bcf MMBoe | Dec. 31, 2021 MMBoe MMBbls Bcf | Feb. 29, 2024 block
Changes in our estimated proved reserves [line items] |  |  |  |
Extension and discoveries of proved development reserves | 23 | 34 | 27 |
Extension and discoveries of proved undevelopment reserves | 105 | 288 | 148 |
Revised proved reserves | 72 | 87 | 217 |
As a result of economics related to changes in fields operating costs and oil and gas prices | 69 | 55 | 186 |
Proved reserves revisions of previous estimates related to changes in projects strategy and drilling schedules | 53 | 46 |  |
Proved reserves revisions of previous estimates of change of development strategy |  |  | 17 |
Increase in proved reserves on account of project performance | 35 |  |  |
Proved reserves revisions of previous estimate of change due to working interest, new projects addition and production forecasts adjustments | 18 |  |  |
Golfo San Jorge, Neuquina, Cuyana and Austral basins [Member] | Conventional Crude Oil Assets [Member] | Divestment Of Certain Groups Of Mature Assets [Member] |  |  |  |
Changes in our estimated proved reserves [line items] |  |  |  |
Number of blocks subject to divestment | block |  |  |  | 55
Top of range [member] |  |  |  |
Changes in our estimated proved reserves [line items] |  |  |  |
Increase Decrease in total proved reserve | 11.00% |  |  |
Golfo San Jorge basin [Member] |  |  |  |
Changes in our estimated proved reserves [line items] |  |  |  |
Proved developed and undeveloped reserves improved recovery energy | 17 | 7 | 5 |
Neuquina basin [Member] |  |  |  |
Changes in our estimated proved reserves [line items] |  |  |  |
Proved reserves revisions of previous estimates of change of development strategy |  | 15 |  |
Proved developed reserves of new reserves estimates |  | 4 | 44 |
Crude oil [Member] |  |  |  |
Changes in our estimated proved reserves [line items] |  |  |  |
Extension and discoveries of proved development reserves | MMBbls | 11 | 5 | 3 |
Extension and discoveries of proved undevelopment reserves | MMBbls | 64 | 120 | 73 |
Revised proved reserves | MMBbls | 63 | 72 | 161 |
Increase Decrease in estimated reserve | 10.00% |  |  |
Increase Decrease in total proved reserve | 5.00% |  |  |
Natural Gas Liquids [Member] |  |  |  |
Changes in our estimated proved reserves [line items] |  |  |  |
Extension and discoveries of proved development reserves | MMBbls |  | 3 | 3 |
Extension and discoveries of proved undevelopment reserves | MMBbls | 7 | 24 | 16 |
Revised proved reserves | MMBbls | 5 | 1 | 6 |
As a result of economics related to changes in fields operating costs and oil and gas prices | 43 |  |  |
Proved reserves revisions of previous estimates related to changes in projects strategy and drilling schedules | 36 |  |  |
Increase in proved reserves on account of project performance | 16 |  |  |
Proved reserves revisions of previous estimate of change due to working interest, new projects addition and production forecasts adjustments | 8 |  |  |
Natural gas [member] |  |  |  |
Changes in our estimated proved reserves [line items] |  |  |  |
Extension and discoveries of proved development reserves | Bcf | 66 | 144 | 116 |
Extension and discoveries of proved undevelopment reserves | Bcf | 192 | 808 | 334 |
Revised proved reserves | Bcf | 80 | 91 | 347 |
As a result of economics related to changes in fields operating costs and oil and gas prices | 26 |  |  |
Proved reserves revisions of previous estimates related to changes in projects strategy and drilling schedules | 19 |  |  |
Increase Decrease in estimated reserve | 10.00% |  |  |
Increase Decrease in total proved reserve | 2.00% |  |  |
Increase in proved reserves on account of project performance | 19 |  |  |
Proved reserves revisions of previous estimate of change due to working interest, new projects addition and production forecasts adjustments | 10 |  |  |
Crude Oil And Natural Gas [Member] |  |  |  |
Changes in our estimated proved reserves [line items] |  |  |  |
Increase Decrease in estimated reserve | 10.00% |  |  |
Increase Decrease in total proved reserve | 6.00% |  |  |

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