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Note 17 - Deferred Income Tax and Social Contribution - Applied Rates (Details) | 12 Months Ended
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Dec. 31, 2017
Central America and the Caribbean [member] | Bottom of range [member] |  |
Statement Line Items [Line Items] |  |
Applied rates | 23.00% |
Central America and the Caribbean [member] | Top of range [member] |  |
Statement Line Items [Line Items] |  |
Applied rates | 31.00% |
Latin America [member] | Bottom of range [member] |  |
Statement Line Items [Line Items] |  |
Applied rates | 14.00% | [1]
Latin America [member] | Top of range [member] |  |
Statement Line Items [Line Items] |  |
Applied rates | 35.00% | [1]
Canada [member] |  |
Statement Line Items [Line Items] |  |
Applied rates | 26.00% |
[1] | Amendments to Argentine tax legislation approved on December 29, 2017 affect tax periods beginning in October 2018 and reduce the income tax rate in the first two years from 35% to 30% and, as a after, to 25%. For fiscal year 2017, however, there is an impact of R $ 33.0 million in deferred income tax.

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