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Property Plant and Equipment - Summary of Changes in Property Plant and Equipment (Parenthetical) (Detail) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2017 ARS ($) Well Property | Dec. 31, 2016 ARS ($) Property | Dec. 31, 2015 ARS ($) Property Subsidiaries | Dec. 31, 2014 ARS ($)
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Exploratory wells in progress | Well | 35 |  |  |
Drilled wells | Well | 37 |  |  |
Charged to exploratory expense | Well | 24 |  |  |
Transferred to proved properties | Property | 15 |  |  |
Property, plant and equipment provisions | $ 7 | $ 2 | $ 6 |
Reduction for deconsolidation of subsidiaries | Subsidiaries |  |  | 500 |
Property, plant and equipment | $ 354,443 | $ 308,014 | $ 270,905 |
El Orejano [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Decreases and reclassifications |  |  | (2,671) |
Magallanes area [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Decreases and reclassifications |  |  | (226) |
Puesto Cortadera [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Decreases and reclassifications |  |  | $ (8) |
Mineral Property, Wells and Related Equipment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Mineral property | Property | 10,003 | 9,147 | 8,435 |
Hydrocarbon Wells Abandonmnet Cost [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Increase decrease Property, plant and equipment | $ (4,913) | $ 2,243 | $ (1,281) |
Hydrocarbon Wells Abandonmnet Cost [member] | Magallanes area [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Increase decrease Property, plant and equipment |  | (8) | (226) |
Hydrocarbon Wells Abandonmnet Cost [member] | Puesto Cortadera [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Increase decrease Property, plant and equipment |  |  | (8) |
YPF EE [member] | At cost [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Property, plant and equipment | 6,722 |  |  |
Accumulated Depreciation and Amortization [Member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Property, plant and equipment | 679,425 | 522,732 | 394,076 | $ 235,156
Accumulated Depreciation and Amortization [Member] | Mineral Property, Wells and Related Equipment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Property, plant and equipment | 566,334 | $ 432,002 | $ 324,922 | $ 192,170
Accumulated Depreciation and Amortization [Member] | YPF EE [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Property, plant and equipment | $ 1,790 |  |  |

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