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17. Borrowings and financing (Details 1) | 12 Months Ended
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Dec. 31, 2018
Local currency | 10th issue debentures |  |
SummaryOfBorrowingsAndFinancingLineItems [Line Items] |  |
Guarantees | Own funds |
Maturity | 2020 |
Annual interest rates | TJLP +1.92% (Series 1 and 3) and 9.53% (Series 2) |
Inflation adjustment | IPCA (Series 2) |
Local currency | 12th issue debentures |  |
SummaryOfBorrowingsAndFinancingLineItems [Line Items] |  |
Guarantees | Own funds |
Maturity | 2025 |
Annual interest rates | TR + 9.5% |
Local currency | 14th issue debentures |  |
SummaryOfBorrowingsAndFinancingLineItems [Line Items] |  |
Guarantees | Own funds |
Maturity | 2022 |
Annual interest rates | TJLP +1.92% (Series 1 and 3) and 9.19% (Series 2) |
Inflation adjustment | IPCA (Series 2) |
Local currency | 15th issue debentures |  |
SummaryOfBorrowingsAndFinancingLineItems [Line Items] |  |
Guarantees | Own funds |
Maturity | 2019 |
Annual interest rates | CDI + 0.99% (Series 1) and 6.2% (Series 2) |
Inflation adjustment | IPCA (Series 2) |
Local currency | 17th issue debentures |  |
SummaryOfBorrowingsAndFinancingLineItems [Line Items] |  |
Guarantees | Own funds |
Maturity | 2023 |
Annual interest rates | CDI +0.75 (Series 1) and 4.5% (Series 2) and 4.75% (Series 3) |
Inflation adjustment | IPCA (Series 2 and 3) |
Local currency | 18th issue debentures |  |
SummaryOfBorrowingsAndFinancingLineItems [Line Items] |  |
Guarantees | Own funds |
Maturity | 2024 |
Annual interest rates | TJLP 1.92 % (Series 1 and 3) and 8.25% (Series 2) |
Inflation adjustment | IPCA (Series 2) |
Local currency | 20th issue debentures |  |
SummaryOfBorrowingsAndFinancingLineItems [Line Items] |  |
Guarantees | Own funds |
Maturity | 2019 |
Annual interest rates | CDI + 3.80% |
Local currency | 21th issue debentures |  |
SummaryOfBorrowingsAndFinancingLineItems [Line Items] |  |
Guarantees | Own funds |
Maturity | 2022 |
Annual interest rates | CDI + 0.60% e CDI+ 0.90% |
Local currency | 22th issue debentures |  |
SummaryOfBorrowingsAndFinancingLineItems [Line Items] |  |
Guarantees | Own funds |
Maturity | 2025 |
Annual interest rates | CDI +0.58% (Series 1) and CDI + 0.90% (Series 2) and 6.0% (Series 3) |
Inflation adjustment | IPCA (Series 3) |
Local currency | Brazilian Federal Savings Bank |  |
SummaryOfBorrowingsAndFinancingLineItems [Line Items] |  |
Guarantees | Own funds |
Maturity | 2019/2039 |
Annual interest rates | 5% to 9.5% |
Inflation adjustment | TR |
Local currency | Brazilian Development Bank - BNDES BAIXADA SANTISTA |  |
SummaryOfBorrowingsAndFinancingLineItems [Line Items] |  |
Guarantees | Own funds |
Maturity | 2019 |
Annual interest rates | TJLP+2.5% |
Local currency | Brazilian Development Bank - BNDES PAC |  |
SummaryOfBorrowingsAndFinancingLineItems [Line Items] |  |
Guarantees | Own funds |
Maturity | 2023 |
Annual interest rates | TJLP+2.15% |
Local currency | Brazilian Development Bank - BNDES PAC II 9751 |  |
SummaryOfBorrowingsAndFinancingLineItems [Line Items] |  |
Guarantees | Own funds |
Maturity | 2027 |
Annual interest rates | TJLP+1.72% |
Local currency | Brazilian Development Bank - BNDES PAC II 9752 |  |
SummaryOfBorrowingsAndFinancingLineItems [Line Items] |  |
Guarantees | Own funds |
Maturity | 2027 |
Annual interest rates | TJLP+1.72% |
Local currency | Brazilian Development Bank - BNDES ONDA LIMPA |  |
SummaryOfBorrowingsAndFinancingLineItems [Line Items] |  |
Guarantees | Own funds |
Maturity | 2025 |
Annual interest rates | TJLP+1.92% |
Local currency | Brazilian Development Bank - BNDES TIETÊ III |  |
SummaryOfBorrowingsAndFinancingLineItems [Line Items] |  |
Guarantees | Own funds |
Maturity | 2028 |
Annual interest rates | TJLP+1.66% |
Local currency | Brazilian Development Bank - BNDES 2015 |  |
SummaryOfBorrowingsAndFinancingLineItems [Line Items] |  |
Guarantees | Own funds |
Maturity | 2035 |
Annual interest rates | TJLP+2.5% |
Local currency | Leases |  |
SummaryOfBorrowingsAndFinancingLineItems [Line Items] |  |
Maturity | 2035 |
Annual interest rates | 7.73% to 10.12% |
Inflation adjustment | IPC |
Local currency | Other |  |
SummaryOfBorrowingsAndFinancingLineItems [Line Items] |  |
Guarantees | Own funds |
Maturity | 2025 |
Annual interest rates | 12% (Presidente Prudente) and TJLP + 1.5% (FINEP) |
Inflation adjustment | TR |
Foreign currency | Inter-American Development Bank - BID 1212 |  |
SummaryOfBorrowingsAndFinancingLineItems [Line Items] |  |
Guarantees | Government |
Maturity | 2025 |
Annual interest rates | 3.31% | [1]
Exchange rate changes | US$ |
Foreign currency | Inter-American Development Bank - BID 2202 |  |
SummaryOfBorrowingsAndFinancingLineItems [Line Items] |  |
Guarantees | Government |
Maturity | 2035 |
Annual interest rates | 3.42% | [1]
Exchange rate changes | US$ |
Foreign currency | International Bank for Reconstruction and Development - BIRD |  |
SummaryOfBorrowingsAndFinancingLineItems [Line Items] |  |
Guarantees | Government |
Maturity | 2034 |
Annual interest rates | 2.85% | [1]
Exchange rate changes | US$ |
Foreign currency | Deutsche Bank |  |
SummaryOfBorrowingsAndFinancingLineItems [Line Items] |  |
Maturity | 2019 |
Annual interest rates | 4.50% | [1]
Exchange rate changes | US$ |
Foreign currency | Eurobonds |  |
SummaryOfBorrowingsAndFinancingLineItems [Line Items] |  |
Maturity | 2020 |
Annual interest rates | 6.25% |
Exchange rate changes | US$ |
Foreign currency | JICA 15 |  |
SummaryOfBorrowingsAndFinancingLineItems [Line Items] |  |
Guarantees | Government |
Maturity | 2029 |
Annual interest rates | 1.8% and 2.5% |
Exchange rate changes | Yen |
Foreign currency | JICA 18 |  |
SummaryOfBorrowingsAndFinancingLineItems [Line Items] |  |
Guarantees | Government |
Maturity | 2029 |
Annual interest rates | 1.8% and 2.5% |
Exchange rate changes | Yen |
Foreign currency | JICA 17 |  |
SummaryOfBorrowingsAndFinancingLineItems [Line Items] |  |
Guarantees | Government |
Maturity | 2035 |
Annual interest rates | 1.2% and 0.01% |
Exchange rate changes | Yen |
Foreign currency | JICA 19 |  |
SummaryOfBorrowingsAndFinancingLineItems [Line Items] |  |
Guarantees | Government |
Maturity | 2037 |
Annual interest rates | 1.7% and 0.01% |
Exchange rate changes | Yen |
Foreign currency | BID 1983AB |  |
SummaryOfBorrowingsAndFinancingLineItems [Line Items] |  |
Maturity | 2023 |
Annual interest rates | 2.08% to 2.38% | [1]
Exchange rate changes | US$ |
[1] | Rates comprising LIBOR + contractually defined spread.

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