XML 98 R47.htm IDEA: XBRL DOCUMENT
v3.20.1

INVESTMENTS IN ASSOCIATES AND JOINT VENTURES (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2019
INVESTMENTS IN ASSOCIATES AND JOINT VENTURES |
Summary of investments in associates and joint ventures |
|  | Investments in |  | Investments in |  | Investments in |  | Investments in |  |  |  |
|  | North America |  | South America |  | Special Steel |  | Brazil |  | Others |  | Total
Balance as of January 1, 2017 |  | 303,526 |  | 404,522 |  | — |  | — |  | 90,796 |  | 798,844
Equity in earnings |  | (111,581) |  | 41,553 |  | 15,460 |  | — |  | 19,971 |  | (34,597)
Other comprehensive income |  | (10,485) |  | (6,260) |  | — |  | — |  | — |  | (16,745)
Capital increase |  | 178,670 |  | — |  | 184,187 |  | — |  | — |  | 362,857
Joint venture creation |  | — |  | 145,084 |  | — |  | — |  | — |  | 145,084
Contingent price complement |  | — |  | — |  | — |  | — |  | 65,500 |  | 65,500
Dividends/Interest on equity |  | (14,050) |  | — |  | — |  | — |  | (26,594) |  | (40,644)
Balance as of December 31, 2017 |  | 346,080 |  | 584,899 |  | 199,647 |  | — |  | 149,673 |  | 1,280,299
Equity in earnings |  | (77,909) |  | 51,648 |  | 15,629 |  | (1,700) |  | 22,473 |  | 10,141
Other comprehensive income |  | 33,101 |  | 96,045 |  | (1,377) |  | (2,050) |  | — |  | 125,719
Capital increase |  | — |  | — |  | — |  | 7,000 |  | — |  | 7,000
Dividends/Interest on equity |  | — |  | (31,359) |  | — |  | — |  | (23,998) |  | (55,357)
Balance as of December 31, 2018 |  | 301,272 |  | 701,233 |  | 213,899 |  | 3,250 |  | 148,148 |  | 1,367,802
Equity in earnings |  | (111,637) |  | 66,468 |  | 6,779 |  | (828) |  | 22,168 |  | (17,050)
Other comprehensive income |  | 28,182 |  | 21,282 |  | 3,523 |  | 2,051 |  | — |  | 55,038
Capital increase |  | 463,990 |  | — |  | — |  | 7,000 |  | — |  | 470,990
Capital reduction |  | — |  | (20,344) |  |  |  |  |  |  |  | (20,344)
Dividends/Interest on equity |  | — |  | (20,247) |  | — |  | — |  | (23,790) |  | (44,037)
Balance as of December 31, 2019 |  | 681,807 |  | 748,392 |  | 224,201 |  | 11,473 |  | 146,526 |  | 1,812,399

X
- Definition The tabular disclosure of investments accounted for using the equity method. + References No definition available. + Details
Name: | ggb_DisclosureOfInvestmentsAccountedForUsingEquityMethodTableTextBlock
Namespace Prefix: | ggb_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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