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FINANCIAL INSTRUMENTS - Changes in liabilities from Cash Flow from financing activities (Details) - BRL (R$) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Related parties, net |  |  |
Changes in liabilities from Cash flow from financing activities |  |  |
Beginning of year | R$ (95,445) | R$ (26,589) | R$ (51,839)
Cash transactions |  |  |
Proceeds/(Repayment) from financing activities | (7,777) | (64,089) | 25,755
Non cash transactions |  |  |
Interest expense on loans and Interest on loans with related parties | (8,277) | (4,767) | (545)
Exchange Variation, Operations with Subsidiaries and Associate Company and Others |  |  | 40
End of year | (111,499) | (95,445) | (26,589)
Leasing payable |  |  |
Changes in liabilities from Cash flow from financing activities |  |  |
Beginning of year | 804,269 | 836,368 |
Cash transactions |  |  |
Proceeds/(Repayment) from financing activities | (247,914) | (161,824) |
Interest paid on loans and financing | (61,727) | (83,620) |
Non cash transactions |  |  |
Interest expense on loans and Interest on loans with related parties | 61,727 | 83,620 |
Exchange variation and others | 300,119 | 129,725 |
End of year | 856,474 | 804,269 | 836,368
Debt, Debentures and Losses/Gains on financial instruments, net - Derivative instruments |  |  |
Changes in liabilities from Cash flow from financing activities |  |  |
Beginning of year | 16,047,021 | 14,878,542 | 16,510,851
Cash transactions |  |  |
Proceeds/(Repayment) from financing activities | (1,963,283) | 700,490 | (3,439,644)
Interest paid on loans and financing | (1,079,981) | (945,027) | (1,162,364)
Non cash transactions |  |  |
Interest expense on loans and Interest on loans with related parties | 1,022,460 | 938,120 | 1,177,686
Exchange variation and others | 3,490,105 | 474,896 |
Exchange Variation, Operations with Subsidiaries and Associate Company and Others |  |  | 1,792,013
End of year | R$ 17,516,322 | R$ 16,047,021 | R$ 14,878,542

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- Definition The increase (decrease) in liabilities arising from financing activities resulting from the effect of changes in foreign exchange rates, operations with subsidiaries and associate company. + References No definition available. + Details
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- Definition The increase (decrease) in liabilities arising from financing activities resulting from the effect of changes in foreign exchange rates. [Refer: Liabilities arising from financing activities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2020-01-01 -Paragraph 44B -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2020-en-r&anchor=para_44B_c&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of liabilities for which cash flows were, or future cash flows will be, classified in the statement of cash flows as cash flows from financing activities. [Refer: Cash flows from (used in) financing activities; Liabilities] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 7 -IssueDate 2020-01-01 -Paragraph 44D -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2020-en-r&anchor=para_44D&doctype=Standard -URIDate 2020-01-01 + Details
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