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Expenses by Nature - Detailed Information about Expenses by Nature (Detail) - ARS ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Disclosure of expenses [Line Items] |  |  |
Salaries and social security taxes | $ 18,403 | $ 14,773 | $ 11,062
Fees and compensation for services | 3,839 | 3,212 | 2,457
Other personnel expenses | 4,110 | 3,299 | 2,743
Taxes, charges and contributions | 6,642 | 5,642 | 4,288
Royalties, easements and canons | 17,692 | 17,178 | 11,977
Insurance | 974 | 1,167 | 925
Rental of real estate and equipment | 6,243 | 5,636 | 3,789
Survey expenses | 214 | 501 | 504
Depreciation of property, plant and equipment | 53,512 | 44,752 | 26,685
Amortization of intangible assets | 838 | 717 | 323
Industrial inputs, consumable materials and supplies | 5,956 | 5,859 | 3,921
Operation services and other service contracts | 13,449 | 11,574 | 7,044
Preservation, repair and maintenance | 21,126 | 17,423 | 14,825
Unproductive exploratory drillings | 1,400 | 2,050 | 1,425
Transportation, products and charges | 14,702 | 11,925 | 8,577
Provision for doubtful trade receivables | 28 | 169 | (99)
Publicity and advertising expenses | 1,154 | 1,199 | 687
Fuel, gas, energy and miscellaneous | 6,287 | 5,492 | 3,575
Total | 176,569 | 152,568 | 104,708
Production costs [Member] |  |  |
Disclosure of expenses [Line Items] |  |  |
Salaries and social security taxes | 12,548 | 10,228 | 7,566
Fees and compensation for services | 1,159 | 1,037 | 775
Other personnel expenses | 3,493 | 2,773 | 2,303
Taxes, charges and contributions | 2,215 | 1,861 | 1,144
Royalties, easements and canons | 17,630 | 17,114 | 11,932
Insurance | 840 | 1,037 | 831
Rental of real estate and equipment | 5,710 | 5,097 | 3,360
Depreciation of property, plant and equipment | 51,607 | 43,077 | 25,706
Amortization of intangible assets | 688 | 499 | 185
Industrial inputs, consumable materials and supplies | 5,813 | 5,732 | 3,801
Operation services and other service contracts | 12,033 | 10,494 | 6,261
Preservation, repair and maintenance | 20,204 | 16,710 | 14,231
Transportation, products and charges | 8,724 | 6,952 | 4,796
Fuel, gas, energy and miscellaneous | 4,759 | 4,464 | 2,659
Total | 147,423 | 127,075 | 85,550
Administrative expenses [Member] |  |  |
Disclosure of expenses [Line Items] |  |  |
Salaries and social security taxes | 3,537 | 2,642 | 2,065
Fees and compensation for services | 2,118 | 1,686 | 1,378
Other personnel expenses | 374 | 347 | 277
Taxes, charges and contributions | 255 | 382 | 259
Insurance | 49 | 41 | 38
Rental of real estate and equipment | 15 | 32 | 33
Depreciation of property, plant and equipment | 771 | 714 | 382
Amortization of intangible assets | 125 | 186 | 117
Industrial inputs, consumable materials and supplies | 35 | 33 | 27
Operation services and other service contracts | 268 | 242 | 237
Preservation, repair and maintenance | 382 | 343 | 248
Transportation, products and charges | 17 | 9 | 25
Publicity and advertising expenses | 545 | 344 | 395
Fuel, gas, energy and miscellaneous | 245 | 125 | 105
Total | 8,736 | 7,126 | 5,586
Selling expenses [Member] |  |  |
Disclosure of expenses [Line Items] |  |  |
Salaries and social security taxes | 1,988 | 1,615 | 1,207
Fees and compensation for services | 544 | 436 | 280
Other personnel expenses | 194 | 140 | 121
Taxes, charges and contributions | 4,172 | 3,399 | 2,885
Royalties, easements and canons | 31 | 25 | 17
Insurance | 85 | 89 | 56
Rental of real estate and equipment | 518 | 505 | 394
Depreciation of property, plant and equipment | 1,134 | 961 | 597
Amortization of intangible assets | 25 | 32 | 21
Industrial inputs, consumable materials and supplies | 83 | 76 | 88
Operation services and other service contracts | 905 | 713 | 546
Preservation, repair and maintenance | 458 | 338 | 322
Transportation, products and charges | 5,961 | 4,964 | 3,756
Provision for doubtful trade receivables | 28 | 169 | (99)
Publicity and advertising expenses | 609 | 855 | 292
Fuel, gas, energy and miscellaneous | 1,219 | 895 | 616
Total | 17,954 | 15,212 | 11,099
Exploration expenses [Member] |  |  |
Disclosure of expenses [Line Items] |  |  |
Salaries and social security taxes | 330 | 288 | 224
Fees and compensation for services | 18 | 53 | 24
Other personnel expenses | 49 | 39 | 42
Royalties, easements and canons | 31 | 39 | 28
Rental of real estate and equipment |  | 2 | 2
Survey expenses | 214 | 501 | 504
Industrial inputs, consumable materials and supplies | 25 | 18 | 5
Operation services and other service contracts | 243 | 125 |
Preservation, repair and maintenance | 82 | 32 | 24
Unproductive exploratory drillings | 1,400 | 2,050 | 1,425
Fuel, gas, energy and miscellaneous | 64 | 8 | 195
Total | $ 2,456 | $ 3,155 | $ 2,473

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