XML 119 R54.htm IDEA: XBRL DOCUMENT
v3.20.1

DEBENTURES (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2019
DEBENTURES |
Schedule of debentures |
|  | General |  | Quantity as of December 31, 2019 |  |  |  |  |  |
Issuance |  | Meeting |  | Issued |  | Held in treasury |  | Maturity |  | 2019 |  | 2018
3rd- A and B |  | May 27,1982 |  | — |  | — |  | June 1, 2021 |  | — |  | 18,871
7th |  | July 14, 1982 |  | — |  | — |  | July 1, 2022 |  | — |  | 1,102
8th |  | November 11, 1982 |  | — |  | — |  | May 2, 2023 |  | — |  | 8,080
9th |  | June 10, 1983 |  | — |  | — |  | September 1, 2024 |  | — |  | 2,349
11th - A and B |  | June 29, 1990 |  | — |  | — |  | June 1, 2020 |  | — |  | 5,716
15th |  | November 09, 2018 |  | 1,500,000 |  | — |  | November 21, 2022 |  | 1,504,436 |  | 1,502,755
16th - A |  | April 25, 2019 |  | 600,000 |  | — |  | May 6, 2023 |  | 602,847 |  | —
16th - B |  | April 25, 2019 |  | 800,000 |  | — |  | May 6, 2026 |  | 803,761 |  | —
Total Consolidated |  |  |  |  |  |  |  |  |  | 2,911,044 |  | 1,538,873
Current |  |  |  |  |  |  |  |  |  | 18,015 |  | 2,755
Non-current |  |  |  |  |  |  |  |  |  | 2,893,029 |  | 1,536,118
Schedule of amortization of long term debentures |
|  | 2019 |  | 2018
2020 |  | — |  | 5,716
2021 |  | — |  | 18,871
2022 |  | 1,496,591 |  | 1,501,102
2023 |  | 598,530 |  | 8,080
2024 |  | — |  | 2,349
2025 on |  | 797,908 |  | —
|  | 2,893,029 |  | 1,536,118

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

X
- Definition The disclosure of detailed information about amortization schedules of debentures. + References No definition available. + Details
Name: | ggb_DisclosureOfDetailedInformationAboutAmortizationSchedulesOfDebenturesTableTextBlock
Namespace Prefix: | ggb_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition The disclosure of detailed information about debentures. + References No definition available. + Details
Name: | ggb_DisclosureOfDetailedInformationAboutDebenturesTableTextBlock
Namespace Prefix: | ggb_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration