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FINANCIAL INSTRUMENTS - Changes in liabilities from Cash Flow from financing activities (Details) - BRL (R$) R$ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Related parties |  |  |
Changes in liabilities from Cash flow from financing activities |  |  |
Beginning of year | R$ 24,890 | R$ 21,970 | R$ (111,499)
Cash transactions |  |  |
Proceeds/(Repayment) from financing activities | 102 | 2,721 | 139,556
Non cash transactions |  |  |
Interest expense on loans and Interest on loans with related parties |  | 199 | (6,089)
Exchange variation and others |  |  | 2
End of year | 24,992 | 24,890 | 21,970
Leasing payable |  |  |
Changes in liabilities from Cash flow from financing activities |  |  |
Beginning of year | 1,030,643 | 918,365 | 856,474
Cash transactions |  |  |
Proceeds/(Repayment) from financing activities | (388,202) | (310,226) | (275,944)
Interest paid on loans and financing | (127,787) | (88,370) | (68,699)
Non cash transactions |  |  |
Interest expense on loans and Interest on loans with related parties | 127,787 | 88,370 | 68,699
Exchange variation and others | 635,161 | 422,504 | 337,835
End of year | 1,277,602 | 1,030,643 | 918,365
Debt, Debentures and Losses/Gains on financial instruments - Derivative instruments |  |  |
Changes in liabilities from Cash flow from financing activities |  |  |
Beginning of year | 12,623,174 | 14,036,447 | 17,516,322
Cash transactions |  |  |
Proceeds/(Repayment) from financing activities | (1,054,000) | (937,815) | (4,506,918)
Interest paid on loans and financing | (858,301) | (968,851) | (1,100,826)
Non cash transactions |  |  |
Interest expense on loans and Interest on loans with related parties | 840,069 | 964,607 | 1,059,841
Exchange variation and others | (637,752) | (471,214) | 1,068,028
End of year | R$ 10,913,190 | R$ 12,623,174 | R$ 14,036,447

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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 2023-01-01 -Paragraph 44B -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2023-en-r&anchor=para_44B_c&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The increase (decrease) in liabilities arising from financing activities resulting from financing cash flows. [Refer: Cash flows from (used in) financing activities; Liabilities arising from financing activities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2023-01-01 -Paragraph 44B -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2023-en-r&anchor=para_44B_a&doctype=Standard -URIDate 2023-03-23 + 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 2023-01-01 -Paragraph 44D -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2023-en-r&anchor=para_44D&doctype=Standard -URIDate 2023-03-23 + Details
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