XML 36 R13.htm IDEA: XBRL DOCUMENT
v3.19.1

TAX CREDITS | 12 Months Ended
--- | ---
Dec. 31, 2018
TAX CREDITS |
TAX CREDITS | NOTE 7 — TAX CREDITS
|  | 2018 |  | 2017
Current |  |  |  |
ICMS (state VAT) |  | 291,027 |  | 155,096
Social security financing |  | 95,700 |  | 91,229
Financing of social integration program |  | 23,473 |  | 20,242
IPI (federal VAT) |  | 44,312 |  | 59,982
IVA (value-added tax) |  | 32,967 |  | 48,139
Others |  | 39,949 |  | 27,741
|  | 527,428 |  | 402,429
Non-current |  |  |  |
ICMS (state VAT) |  | 27,527 |  | 26,135
Social security financing |  | 1,980 |  | 360
Financing of social integration program and Others |  | 2,558 |  | 4,346
|  | 32,065 |  | 30,841
|  | 559,493 |  | 433,270
The estimates of realization of non-current tax credits are as follows:
|  | 2018 |  | 2017
2019 |  | — |  | 18,017
2020 |  | 15,025 |  | 7,062
2021 |  | 10,846 |  | 5,762
2022 on |  | 6,194 |  | —
|  | 32,065 |  | 30,841

X
- Definition The entire disclosure for tax credits. + References No definition available. + Details
Name: | ggb_DisclosureOfTaxCreditsTextBlock
Namespace Prefix: | ggb_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | ggb_TaxCreditsAbstract
Namespace Prefix: | ggb_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration