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20. Provisions (Details) - BRL (R$) R$ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
SummaryOfProvisionsLineItems [Line Items] |  |
Provisions | R$ 993,625 | R$ 1,422,588
Escrow deposits | (100,763) | (344,384)
Total | 892,862 | 1,078,204
Current | 458,387 | 607,959
Noncurrent | 434,475 | 470,245
Customer claims |  |
SummaryOfProvisionsLineItems [Line Items] |  |
Provisions | 290,649 | 438,619
Escrow deposits | (43,841) | (56,301)
Total | 246,808 | 382,318
Supplier claims |  |
SummaryOfProvisionsLineItems [Line Items] |  |
Provisions | 67,985 | 332,037
Escrow deposits | (24,380) | (259,608)
Total | 43,605 | 72,429
Other civil claims |  |
SummaryOfProvisionsLineItems [Line Items] |  |
Provisions | 98,302 | 114,544
Escrow deposits | (13,519) | (16,227)
Total | 84,783 | 98,317
Tax claims |  |
SummaryOfProvisionsLineItems [Line Items] |  |
Provisions | 63,335 | 77,100
Escrow deposits | (8,091) | (5,507)
Total | 55,244 | 71,593
Labor claims |  |
SummaryOfProvisionsLineItems [Line Items] |  |
Provisions | 302,935 | 299,842
Escrow deposits | (10,932) | (6,741)
Total | 292,003 | 293,101
Environmental claims |  |
SummaryOfProvisionsLineItems [Line Items] |  |
Provisions | 170,419 | 160,446
Escrow deposits | 0 | 0
Total | 170,419 | 160,446
Current |  |
SummaryOfProvisionsLineItems [Line Items] |  |
Provisions | 458,387 | 607,959
Escrow deposits | 0 | 0
Noncurrent |  |
SummaryOfProvisionsLineItems [Line Items] |  |
Provisions | 535,238 | 814,629
Escrow deposits | R$ (100,763) | R$ (344,384)

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