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Acquisitions and Dispositions - Summary of the Main Results Associated with the Investment in YPF EE (Detail) - ARS ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Disclosure of income associated with investment [Line Items] |  |  |
Income | $ 252,813 | $ 210,100 | $ 156,136
Costs | (211,812) | (177,304) | (119,537)
Gross income | 41,001 | 32,796 | 36,599
Operating profit | 16,073 | (24,246) | 16,588
Income from investments in companies | 500 | 206 | 111
Net financial results | (8,798) | (6,146) | 12,157
Income tax | 3,969 | $ 1,425 | $ (24,637)
YPF EE [member] |  |  |
Disclosure of income associated with investment [Line Items] |  |  |
Income | 1,908 |  |
Costs | (594) |  |
Gross income | 1,314 |  |
Operating profit | 1,122 |  |
Income from investments in companies | 90 |  |
Net financial results | (76) |  |
Income tax | (268) |  |
Net income without deletions | 868 |  |
Deletions | 241 |  |
Net income with deletions | $ 1,109 |  |

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