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v3.19.1

FINANCIAL RISK MANAGEMENT (Details) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2018 | Dec. 31, 2017
Fuel-Price Risk [Member] | Fuel options [Member] |  |  |  |  |  |  |  |  |  |
Disclosure of risk management strategy related to hedge accounting [line items] |  |  |  |  |  |  |  |  |  |
Percentage of coverage over the expected volume of consumption | [1] | 15.00% | 40.00% | 58.00% | 66.00% | 5.00% | 12.00% | 19.00% | 45.00% | 12.00%
[1] | The volume shown in the table considers all the hedging instruments (swaps and options).

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- Definition It represents the percentage of hedge expected consumption value. + References No definition available. + Details
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- Details
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