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19. Provisions (Details) - BRL (R$) R$ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
SummaryOfProvisionsLineItems [Line Items] |  |
Provisions | R$ 1,422,588 | R$ 1,541,558
Escrow deposits | (344,384) | (368,483)
Total | 1,078,204 | 1,173,075
Current | 607,959 | 730,334
Noncurrent | 470,245 | 442,741
Customer claims |  |
SummaryOfProvisionsLineItems [Line Items] |  |
Provisions | 438,619 | 572,210
Escrow deposits | (56,301) | (97,171)
Total | 382,318 | 475,039
Supplier claims |  |
SummaryOfProvisionsLineItems [Line Items] |  |
Provisions | 332,037 | 332,667
Escrow deposits | (259,608) | (251,510)
Total | 72,429 | 81,157
Other civil claims |  |
SummaryOfProvisionsLineItems [Line Items] |  |
Provisions | 114,544 | 131,286
Escrow deposits | (16,227) | (12,652)
Total | 98,317 | 118,364
Tax claims |  |
SummaryOfProvisionsLineItems [Line Items] |  |
Provisions | 77,100 | 69,898
Escrow deposits | (5,507) | (2,986)
Total | 71,593 | 66,912
Labor claims |  |
SummaryOfProvisionsLineItems [Line Items] |  |
Provisions | 299,842 | 285,413
Escrow deposits | (6,741) | (3,202)
Total | 293,101 | 282,211
Environmental claims |  |
SummaryOfProvisionsLineItems [Line Items] |  |
Provisions | 160,446 | 150,084
Escrow deposits | 0 | (962)
Total | 160,446 | 149,122
Current |  |
SummaryOfProvisionsLineItems [Line Items] |  |
Provisions | 607,959 | 730,334
Escrow deposits | 0 | 0
Noncurrent |  |
SummaryOfProvisionsLineItems [Line Items] |  |
Provisions | 814,629 | 811,224
Escrow deposits | R$ (344,384) | R$ (368,483)

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- Definition The amount of current provisions. [Refer: Provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 54 -Subparagraph l -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_54_l&doctype=Standard -URIDate 2017-03-09 + Details
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