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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
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Argentina [member]      
Disclosure of information about consolidated structured entities [Line Items]      
Acquisition of unproved properties $ 34 $ 715 $ 4,171
Exploration costs 4,316 2,348 9,115
Development costs 189,992 61,441 132,289
Total costs incurred 194,342 64,504 145,575
Other foreign [Member]      
Disclosure of information about consolidated structured entities [Line Items]      
Exploration costs 237 141 771
Total costs incurred 237 141 771
Worldwide [member]      
Disclosure of information about consolidated structured entities [Line Items]      
Acquisition of unproved properties 34 715 4,171
Exploration costs 4,553 2,489 9,886
Development costs 189,992 61,441 132,289
Total costs incurred $ 194,579 $ 64,645 $ 146,346