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INCOME AND SOCIAL CONTRIBUTION TAXES - Unrecognized deferred income tax assets (Details) - BRL (R$) R$ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
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Domestic |  |
INCOME AND SOCIAL CONTRIBUTION TAXES |  |
Unused tax losses for which no deferred tax asset recognised | R$ 265,403 | R$ 312,741
Foreign |  |
INCOME AND SOCIAL CONTRIBUTION TAXES |  |
Unused tax losses for which no deferred tax asset recognised | 795,775 | 1,137,548
Unused tax credits for which no deferred tax asset recognised | R$ 398,364 | R$ 360,152

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- Definition The amount of unused tax credits for which no deferred tax asset is recognised in the statement of financial position. [Refer: Unused tax credits [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2018-01-01 -Paragraph 81 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=12&date=2018-03-01&anchor=para_81_e&doctype=Standard -URIDate 2018-03-16 + Details
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