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30. Commitments (Details) R$ in Thousands | Dec. 31, 2017 BRL (R$)
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SummaryOfCommitmentsLineItems [Line Items] |
Contractual obligations, Expenses | R$ 4,209,459
Contractual obligations, Investments | 10,902,644
Contractual obligations, Total | 15,112,103
1 year |
SummaryOfCommitmentsLineItems [Line Items] |
Contractual obligations, Expenses | 1,459,864
Contractual obligations, Investments | 1,779,320
Contractual obligations, Total | 3,239,184
1-3 years |
SummaryOfCommitmentsLineItems [Line Items] |
Contractual obligations, Expenses | 1,151,641
Contractual obligations, Investments | 2,121,493
Contractual obligations, Total | 3,273,134
3-5 years |
SummaryOfCommitmentsLineItems [Line Items] |
Contractual obligations, Expenses | 381,119
Contractual obligations, Investments | 1,031,762
Contractual obligations, Total | 1,412,881
More than 5 years |
SummaryOfCommitmentsLineItems [Line Items] |
Contractual obligations, Expenses | 1,216,835
Contractual obligations, Investments | 5,970,069
Contractual obligations, Total | R$ 7,186,904

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