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16. Borrowings and financing (Details 4) R$ in Thousands | Dec. 31, 2017 BRL (R$) | [1]
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SummaryOfBorrowingsAndFinancingLineItems [Line Items] |
Borrowings and financing - Credit Limited | R$ 3,781,000
Brazilian Federal Savings Bank |
SummaryOfBorrowingsAndFinancingLineItems [Line Items] |
Borrowings and financing - Credit Limited | 1,487,000
Brazilian Development Bank - BNDES |
SummaryOfBorrowingsAndFinancingLineItems [Line Items] |
Borrowings and financing - Credit Limited | 1,576,000
Inter-American Development Bank - BID |
SummaryOfBorrowingsAndFinancingLineItems [Line Items] |
Borrowings and financing - Credit Limited | 436,000
Japan International Cooperation Agency - JICA |
SummaryOfBorrowingsAndFinancingLineItems [Line Items] |
Borrowings and financing - Credit Limited | 244,000
Other |
SummaryOfBorrowingsAndFinancingLineItems [Line Items] |
Borrowings and financing - Credit Limited | R$ 38,000
[1] | Brazilian Central Bank's exchange rate as of December 31, 2017 (US$ 1.00 = R$ 3.3080; Yen 1.00 = R$ 0.02940).

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