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INCOME TAX AND DEFERRED TAX, Component of Net Deferred Tax Assets and Liabilities (Details) - ARS ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Components of Net Deferred Tax Assets and Liabilities [abstract] |  |
Deferred tax assets (liability), beginning of year | $ (6,456,750) |
Deferred tax assets (liability), end of year | (2,223,565) | $ (6,456,750)
Deferred Tax Assets [Member] |  |
Components of Net Deferred Tax Assets and Liabilities [abstract] |  |
Deferred tax assets (liability), beginning of year | 731,935 | 995,431
Charge in results | 97,189 | (263,496)
Deferred tax assets (liability), end of year | 829,124 | 731,935
Deferred Tax Assets [Member] | Allowance for Doubtful Accounts [Member] |  |
Components of Net Deferred Tax Assets and Liabilities [abstract] |  |
Deferred tax assets (liability), beginning of year | 0 | 12,294
Charge in results | 0 | (12,294)
Deferred tax assets (liability), end of year | 0 | 0
Deferred Tax Assets [Member] | Tax Credits Discounted Value Loss [Member] |  |
Components of Net Deferred Tax Assets and Liabilities [abstract] |  |
Deferred tax assets (liability), beginning of year | 0 | 2,815
Charge in results | 387 | (2,815)
Deferred tax assets (liability), end of year | 387 | 0
Deferred Tax Assets [Member] | Account Receivables Discounted Value [Member] |  |
Components of Net Deferred Tax Assets and Liabilities [abstract] |  |
Deferred tax assets (liability), beginning of year | 0 | 70
Charge in results | 2,273 | (70)
Deferred tax assets (liability), end of year | 2,273 | 0
Deferred Tax Assets [Member] | Provisions for Legal Claims and Other Provisions [Member] |  |
Components of Net Deferred Tax Assets and Liabilities [abstract] |  |
Deferred tax assets (liability), beginning of year | 112,834 | 180,950
Charge in results | (11,928) | (68,116)
Deferred tax assets (liability), end of year | 100,906 | 112,834
Deferred Tax Assets [Member] | Financial Lease [Member] |  |
Components of Net Deferred Tax Assets and Liabilities [abstract] |  |
Deferred tax assets (liability), beginning of year | 335,464 | 518,070
Charge in results | 72,110 | (182,606)
Deferred tax assets (liability), end of year | 407,574 | 335,464
Deferred Tax Assets [Member] | Contract liabilities [Member] |  |
Components of Net Deferred Tax Assets and Liabilities [abstract] |  |
Deferred tax assets (liability), beginning of year | 283,637 | 281,232
Charge in results | 34,347 | 2,405
Deferred tax assets (liability), end of year | 317,984 | 283,637
Deferred Tax Liabilities [Member] |  |
Components of Net Deferred Tax Assets and Liabilities [abstract] |  |
Deferred tax assets (liability), beginning of year | (7,188,685) | (9,947,866)
Charge in results | 4,135,996 | 2,759,181
Deferred tax assets (liability), end of year | (3,052,689) | (7,188,685)
Deferred Tax Liabilities [Member] | Deferred Sales [Member] |  |
Components of Net Deferred Tax Assets and Liabilities [abstract] |  |
Deferred tax assets (liability), beginning of year | 0 | 85
Charge in results | 2,839 | (85)
Deferred tax assets (liability), end of year | 2,839 | 0
Deferred Tax Liabilities [Member] | Loans [Member] |  |
Components of Net Deferred Tax Assets and Liabilities [abstract] |  |
Deferred tax assets (liability), beginning of year | (3,662) | (8,756)
Charge in results | (27,419) | 5,094
Deferred tax assets (liability), end of year | (31,081) | (3,662)
Deferred Tax Liabilities [Member] | Property, Plant and Equipment [Member] |  |
Components of Net Deferred Tax Assets and Liabilities [abstract] |  |
Deferred tax assets (liability), beginning of year | (7,161,058) | (9,915,672)
Charge in results | 4,243,088 | 2,754,614
Deferred tax assets (liability), end of year | (2,917,970) | (7,161,058)
Deferred Tax Liabilities [Member] | Cash and Cash Equivalents [Member] |  |
Components of Net Deferred Tax Assets and Liabilities [abstract] |  |
Deferred tax assets (liability), beginning of year | (16,463) | (14,373)
Charge in results | (78,451) | (2,090)
Deferred tax assets (liability), end of year | (94,914) | (16,463)
Deferred Tax Liabilities [Member] | Inventories [Member] |  |
Components of Net Deferred Tax Assets and Liabilities [abstract] |  |
Deferred tax assets (liability), beginning of year | (7,502) | (9,150)
Charge in results | (4,061) | 1,648
Deferred tax assets (liability), end of year | $ (11,563) | $ (7,502)

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