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TRADE ACCOUNTS RECEIVABLE - Changes in impairment of financial assets (Details) - Trade accounts receivable - BRL (R$) R$ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Jan. 01, 2018
Changes in the impairment |  |  |  |
Impairment at beginning of period | R$ (158,157) | R$ (131,639) | R$ (199,306) |
Effects of IFRS 9 adoption |  |  |  | R$ (48,063)
Adjusted impairment balance on financial assets |  |  |  | R$ (179,702)
Impairment on financial assets during the year | (81,243) | (111,900) | (98,476) |
Recoveries in the year | 60,199 | 101,986 | 80,134 |
Write-offs | 78,635 | 39,943 | 73,591 |
Loss of control by joint venture creation |  |  | 1,487 |
Assets held for sale |  | (3,348) | 11,207 |
Exchange variation | 2,487 | (5,136) | (276) |
Impairment at end of period | R$ (98,079) | R$ (158,157) | R$ (131,639) |

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- Definition The adjusted amount of an allowance account used to record impairments to financial assets due to credit losses. + References No definition available. + Details
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- Definition The decrease in an allowance account for credit losses of financial assets resulting from the loss of control in a joint venture. + References No definition available. + Details
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- Definition The increase (decrease) in an allowance account for credit losses of financial assets resulting from effects of IFRS 9 adoption. + References No definition available. + Details
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- Definition The increase (decrease) in allowance for trade receivables through transfer to assets held for sale and related adjustments. + References No definition available. + Details
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- Definition The amount of additional allowance for credit losses of financial assets recognised in profit or loss. [Refer: Allowance account for credit losses of financial assets] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Note Expiry date 2021-01-01 -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph 16 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_16&doctype=Standard&book=b -URIDate 2019-03-27 + Details
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- Definition The amount of an allowance account used to record impairments to financial assets due to credit losses. [Refer: Financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2021-01-01 -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph 16 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_16&doctype=Standard&book=b -URIDate 2019-03-27 + Details
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- Definition The increase (decrease) in an allowance account for credit losses of financial assets resulting from the net exchange differences arising when the financial statements are translated from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Allowance account for credit losses of financial assets] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Note Expiry date 2021-01-01 -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph 16 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_16&doctype=Standard&book=b -URIDate 2019-03-27 + Details
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- Definition The decrease in an allowance account for credit losses of financial assets resulting from the reversal of impairment. [Refer: Allowance account for credit losses of financial assets] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Note Expiry date 2021-01-01 -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph 16 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_16&doctype=Standard&book=b -URIDate 2019-03-27 + Details
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- Definition The decrease in an allowance account for credit losses of financial assets resulting from the utilisation of the allowance. [Refer: Allowance account for credit losses of financial assets] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Note Expiry date 2021-01-01 -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph 16 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_16&doctype=Standard&book=b -URIDate 2019-03-27 + Details
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