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Financial instruments - Details of financial assets and financial liabilities (Details) - ARS ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Financial instruments
Assets	$ 18,016	$ 14,162
Liabilities	26,220	22,912
Financial liabilities at amortised cost
Financial instruments
Liabilities	26,203	22,910
Financial liabilities at fair value accounted through profit or loss
Financial instruments
Liabilities	17	1
Financial liabilities at fair value accounted through other comprehensive income
Financial instruments
Liabilities		1
Financial assets at amortized cost
Financial instruments
Assets	13,673	10,903
Financial assets at fair value accounted through profit or loss
Financial instruments
Assets	4,333	3,259
Financial assets at fair value accounted through other comprehensive income
Financial instruments
Assets	10
Trade payables
Financial instruments
Liabilities	11,584	9,131
Trade payables | Financial liabilities at amortised cost
Financial instruments
Liabilities	11,584	9,131
Loans
Financial instruments
Liabilities	12,235	11,912
Loans | Financial liabilities at amortised cost
Financial instruments
Liabilities	12,218	11,910
Loans | Financial liabilities at fair value accounted through profit or loss
Financial instruments
Liabilities	17	1
Loans | Financial liabilities at fair value accounted through other comprehensive income
Financial instruments
Liabilities		1
Salaries and social security payables
Financial instruments
Liabilities	2,310	1,794
Salaries and social security payables | Financial liabilities at amortised cost
Financial instruments
Liabilities	2,310	1,794
Other liabilities
Financial instruments
Liabilities	91	75
Other liabilities | Financial liabilities at amortised cost
Financial instruments
Liabilities	91	75
Cash and cash equivalents
Financial instruments
Assets	2,831	3,945
Cash and cash equivalents | Financial assets at amortized cost
Financial instruments
Assets	1,469	2,436
Cash and cash equivalents | Financial assets at fair value accounted through profit or loss
Financial instruments
Assets	1,362	1,509
Cash and banks | Financial assets at amortized cost
Financial instruments
Assets	1,364	934
Investments
Financial instruments
Assets	6,082	2,097
Investments | Financial assets at amortized cost
Financial instruments
Assets	3,169	349
Investments | Financial assets at fair value accounted through profit or loss
Financial instruments
Assets	2,913	1,748
Trade receivables
Financial instruments
Assets	8,648	7,785
Trade receivables | Financial assets at amortized cost
Financial instruments
Assets	8,648	7,785
Other receivables
Financial instruments
Assets	455	335
Other receivables | Financial assets at amortized cost
Financial instruments
Assets	387	333
Other receivables | Financial assets at fair value accounted through profit or loss
Financial instruments
Assets	58	$ 2
Other receivables | Financial assets at fair value accounted through other comprehensive income
Financial instruments
Assets	$ 10

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

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The amount of assets that are: (a) cash; (b) an equity instrument of another entity; (c) a contractual right: (i) to receive cash or another financial asset from another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially favourable to the entity; or (d) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to receive a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose the entity’s own equity instruments do not include puttable financial instruments classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. [Refer: Financial instruments, class [member]; Financial liabilities]

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The amount of liabilities that are: (a) a contractual obligation: (i) to deliver cash or another financial asset to another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially unfavourable to the entity; or (b) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to deliver a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose, rights, options or warrants to acquire a fixed number of the entity’s own equity instruments for a fixed amount of any currency are equity instruments if the entity offers the rights, options or warrants pro rata to all of its existing owners of the same class of its own non-derivative equity instruments. Also, for those purposes the entity’s own equity instruments do not include puttable financial instruments that are classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. As an exception, an instrument that meets the definition of a financial liability is classified as an equity instrument if it has all the features and meets the conditions in paragraphs 16A-16B or paragraphs 16C-16D of IAS 32. [Refer: Financial instruments, class [member]; Financial assets; Derivatives [member]]

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