XML 67 R123.htm IDEA: XBRL DOCUMENT
v3.20.1

TAX, CIVIL AND LABOR CLAIMS AND CONTINGENT ASSETS - Judicial Deposits (Details) R$ in Thousands | 12 Months Ended |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2019 BRL (R$) | Dec. 31, 2017 BRL (R$) | Dec. 18, 2019 BRL (R$) | Sep. 16, 2019 BRL (R$) | Jul. 19, 2019 BRL (R$) | Dec. 31, 2018 BRL (R$) | Mar. 15, 2017 Vote | Mar. 14, 2017 Vote
Disclosure of other provisions [line items] |  |  |  |  |  |  |  |
Tax | R$ 1,837,967 |  |  |  |  | R$ 1,963,859 |  |
Labor | 113,379 |  |  |  |  | 126,620 |  |
Civil | 40,369 |  |  |  |  | 44,935 |  |
Judicial deposits | 1,991,715 |  |  |  |  | R$ 2,135,414 |  |
Balance judicial deposits | R$ 1,650,976 |  |  |  |  |  |  |
Number of Votes under Judicial Deposits Lawsuits | Vote |  |  |  |  |  |  | 4 | 6
Reversal of provision for tax liabilities, net |  | R$ 929,711 |  |  |  |  |  |
Reversal of interest on provision for tax liabilities, net |  | 369,819 |  |  |  |  |  |
Number of lawsuits final | 2 |  |  |  |  |  |  |
Amount of undue payments before proposed action |  |  | R$ 280,000 |  | R$ 122,000 |  |  |
Right to Withdraw Judicial Deposits |  |  | R$ 187,000 | R$ 179,000 |  |  |  |
Legal proceedings provision |  |  |  |  |  |  |  |
Disclosure of other provisions [line items] |  |  |  |  |  |  |  |
Reversal of provision for tax liabilities, net |  | (929,711) |  |  |  |  |  |
Reversal of interest on provision for tax liabilities, net |  | R$ 369,819 |  |  |  |  |  |

X
- Definition Amount of undue payments before proposed action under legal proceedings. + References No definition available. + Details
Name: | ggb_AmountOfUnduePaymentsBeforeProposedActionUnderLegalProceedings
Namespace Prefix: | ggb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Net gain on reversal of contingent liabilities. + References No definition available. + Details
Name: | ggb_ContingentLiabilitiesGainOnReversalNet
Namespace Prefix: | ggb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Financial income resulting from the reversal of accrued interest on judicial deposits held for a contingent tax liability which has been reversed. + References No definition available. + Details
Name: | ggb_FinancialIncomeFromReversalOfContingentTaxLiabilities
Namespace Prefix: | ggb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of balance noncurrent restricted cash and cash equivalents. + References No definition available. + Details
Name: | ggb_NoncurrentBalanceRestrictedCashAndCashEquivalents
Namespace Prefix: | ggb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition It represents the amount of non-current restricted cash and cash equivalents (judicial deposits) relating to Civil matters. + References No definition available. + Details
Name: | ggb_NoncurrentCivilRelatedRestrictedCashAndCashEquivalents
Namespace Prefix: | ggb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition It represents the amount of non-current restricted cash and cash equivalents (judicial deposits) relating to Labor matters. + References No definition available. + Details
Name: | ggb_NoncurrentLaborRelatedRestrictedCashAndCashEquivalents
Namespace Prefix: | ggb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition It represents the amount of non-current restricted cash and cash equivalents (judicial deposits) relating to Tax matters. + References No definition available. + Details
Name: | ggb_NoncurrentTaxRelatedRestrictedCashAndCashEquivalents
Namespace Prefix: | ggb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents the number of lawsuits final. + References No definition available. + Details
Name: | ggb_NumberOfLawsuitsFinal
Namespace Prefix: | ggb_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of votes under judicial deposits lawsuits. + References No definition available. + Details
Name: | ggb_NumberOfVotesUnderJudicialDepositsLawsuits
Namespace Prefix: | ggb_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of right to withdraw the judicial deposits. + References No definition available. + Details
Name: | ggb_RightToWithdrawJudicialDeposits
Namespace Prefix: | ggb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfOtherProvisionsLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of non-current restricted cash and cash equivalents. [Refer: Restricted cash and cash equivalents] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_55&doctype=Standard -URIDate 2019-03-27 + Details
Name: | ifrs-full_NoncurrentRestrictedCashAndCashEquivalents
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | ifrs-full_ClassesOfProvisionsAxis=ifrs-full_LegalProceedingsProvisionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |