The interest rate on borrowings. [Refer: Borrowings]

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The fair value of financial instruments designated as hedging instruments. Hedging instruments are designated derivatives or (for a hedge of the risk of changes in foreign currency exchange rates only) designated non-derivative financial assets or non-derivative financial liabilities whose fair value or cash flows are expected to offset changes in the fair value or cash flows of a designated hedged item. [Refer: At fair value [member]; Derivatives [member]; Derivative financial assets; Derivative financial liabilities; Financial instruments, class [member]; Financial assets; Financial liabilities]

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FINANCIAL INSTRUMENTS - Hedge accounting (Details) - Cash flow hedges $ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2020 ARS ($) $ / $	Dec. 31, 2019 ARS ($) $ / $	Dec. 31, 2018 ARS ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2020 ARS ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2019 ARS ($)	Dec. 31, 2017 USD ($)
LIBOR Hedges \| IFC Loan
Hedge accounting
Notional amount								$ 400.0
LIBOR Hedges \| IIC Loan
Hedge accounting
Notional amount								100.0
LIBOR Hedges \| NDF
Hedge accounting
Notional amount								$ 440.0
LIBOR Hedges \| NDF \| Minimum
Hedge accounting
Annual rate of interest								2.085%
LIBOR Hedges \| NDF \| Maximum
Hedge accounting
Annual rate of interest								2.4525%
LIBOR Hedges \| NDF \| Other Financial Debt
Hedge accounting
Liabilities recognized during the period	$ 461	$ 189
LIBOR Hedges \| NDF \| Current Other Financial Debt
Hedge accounting
Liabilities recognized during the period	450	170
LIBOR Hedges \| NDF \| Non-current Other Financial Debt
Hedge accounting
Liabilities recognized during the period	11	19
LIBOR Hedges \| NDF \| Debt financial expenses - Interests on financial debt
Hedge accounting
Gains recognized on change in fair value of derivatives		$ 82	$ 13
Losses recognized on change in fair value of derivatives	$ 293
Exchange Rate Hedges \| NDF
Hedge accounting
Notional amount				$ 477.0		$ 499.0
Average exchange rate as a result of hedge \| $ / $	87.54	52.50
NDF Agreement, Balance				$ 117.0		$ 46.5
Exchange Rate Hedges \| NDF \| Current Other receivables
Hedge accounting
Current interest receivable					$ 2		$ 222
Exchange Rate Hedges \| NDF \| Current Financial Debt
Hedge accounting
Current interest liability					$ 66		$ 321
Exchange Rate Hedges \| NDF \| Debt financial expenses - Interests on financial debt
Hedge accounting
Gains recognized on change in fair value of derivatives			2,338
Exchange Rate Hedges \| NDF \| Other financial results, net - Other exchange differences
Hedge accounting
Losses recognized on change in fair value of derivatives			$ 319
Exchange Rate Hedges \| NDF \| Debt financial expenses - Foreign currency exchange losses on financial debts
Hedge accounting
Gains recognized on change in fair value of derivatives		$ 972
Losses recognized on change in fair value of derivatives	$ 1,523