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Note 17 - Deferred Income Tax and Social Contribution - Deferred Tax Related to Tax Losses (Details) - BRL (R$) R$ in Millions | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | --- | ---
Statement Line Items [Line Items] |  |  |  |
Deferred Tax Related to Tax Losses |  | R$ (407.1) | R$ (49.9) | R$ (61.5)
Unused tax losses [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Deferred Tax Related to Tax Losses |  | 791.0 | R$ 501.0 |
Unused tax losses [member] | Not later than one year [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Deferred Tax Related to Tax Losses |  | 255.0 |  |
Unused tax losses [member] | Later than one year and not later than two years [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Deferred Tax Related to Tax Losses |  | 69.5 |  |
Unused tax losses [member] | Later than two years and not later than three years [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Deferred Tax Related to Tax Losses |  | 50.8 |  |
Unused tax losses [member] | Later than three years and not later than four years [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Deferred Tax Related to Tax Losses |  | 25.6 |  |
Unused tax losses [member] | Later than four years and not later than five years [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Deferred Tax Related to Tax Losses |  | 40.8 |  |
Unused tax losses [member] | Later than five years and not later than seven years [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Deferred Tax Related to Tax Losses |  | 271.3 |  |
Unused tax losses [member] | Later than seven years and not later than ten years [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Deferred Tax Related to Tax Losses | [1] | R$ 78.0 |  |
[1] | There is no expectation of realization that exceeds the term of 10 years.

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- Definition The amount of deferred tax liabilities or assets. [Refer: Deferred tax liabilities; Deferred tax assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2017-01-01 -Paragraph 81 -Subparagraph g -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=12&date=2017-03-01&anchor=para_81_g_i&doctype=Standard -URIDate 2017-03-09 + Details
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