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Supplemental Information on Oil And Gas Producing Activities (Unaudited) - Costs Incurred for Oil and Gas Producing Activities (Detail) - ARS ($) $ in Millions | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Argentina [member] |  |  |
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Acquisition of unproved properties | $ 4,171 | $ 276 |
Acquisition of proved properties |  | 166 | $ 154
Exploration costs | 9,115 | 7,283 | 3,302
Development costs | 132,289 | 53,553 | 39,039
Total costs incurred | 145,575 | 61,278 | 42,495
Other foreign [Member] |  |  |
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Exploration costs | 771 | 381 | 149
Total costs incurred | 771 | 381 | 149
Worldwide [member] |  |  |
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Acquisition of unproved properties | 4,171 | 276 |
Acquisition of proved properties |  | 166 | 154
Exploration costs | 9,886 | 7,664 | 3,451
Development costs | 132,289 | 53,553 | 39,039
Total costs incurred | $ 146,346 | $ 61,659 | $ 42,644

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