XML 52 R27.htm IDEA: XBRL DOCUMENT
v3.22.1

ENVIRONMENTAL LIABILITIES | 12 Months Ended
--- | ---
Dec. 31, 2021
ENVIRONMENTAL LIABILITIES |
ENVIRONMENTAL LIABILITIES | NOTE 22 — ENVIRONMENTAL LIABILITIES The steel industry uses and generates substances that may damage the environment. The Company and its subsidiaries believe they are compliant with all the applicable environmental regulations in the countries where they operate. The Company’s management performs frequent analysis with the purpose of identifying potentially impacted areas and a liability is recorded based on the best estimate of costs for investigation, treatment and cleaning of potentially affected sites. The balances of the provisions are as follows: ​
​ | ​ | ​ | ​ | ​
​ |  | 2021 |  | 2020
Provision for environmental liabilities |  | 575,709 | ​ | 297,094
Current |  | 231,711 | ​ | 125,992
Non-current |  | 343,998 | ​ | 171,102
​

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

X
- Definition The entire disclosure for environmental liabilities. + References No definition available. + Details
Name: | ggb_DisclosureOfEnvironmentalLiabilitiesTextBlock
Namespace Prefix: | ggb_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration