XML 106 R81.htm IDEA: XBRL DOCUMENT
v3.22.1

INVESTMENTS IN ASSOCIATES AND JOINT VENTURES (Details) - BRL (R$) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
INVESTMENTS IN ASSOCIATES AND JOINT VENTURES |  |  |
Balance at beginning of year | R$ 2,271,629 | R$ 1,812,399 | R$ 1,367,802
Equity in earnings | 563,158 | 152,569 | (17,050)
Other comprehensive income | 225,507 | 358,816 | 55,038
Capital increase | 27,500 | 42,782 | 470,990
Capital reduction | (141,095) |  | (20,344)
Results in operations with subsidiary and joint ventures (note 3.4) | 511,514 |  |
Dividends/Interest on equity | (117,438) | (94,937) | 44,037
Balance at end of year | 3,340,775 | 2,271,629 | 1,812,399
Investments in North America |  |  |
INVESTMENTS IN ASSOCIATES AND JOINT VENTURES |  |  |
Balance at beginning of year | 908,339 | 681,807 | 301,272
Equity in earnings | 279,948 | 23,494 | (111,637)
Other comprehensive income | 173,934 | 165,479 | 28,182
Capital increase |  | 42,782 | 463,990
Results in operations with subsidiary and joint ventures (note 3.4) | 511,514 |  |
Dividends/Interest on equity | (2,460) | (5,223) |
Balance at end of year | 1,871,275 | 908,339 | 681,807
Investments in South America |  |  |
INVESTMENTS IN ASSOCIATES AND JOINT VENTURES |  |  |
Balance at beginning of year | 976,045 | 748,392 | 701,233
Equity in earnings | 268,291 | 99,913 | 66,468
Other comprehensive income | 52,278 | 195,286 | 21,282
Capital reduction | (141,095) |  | (20,344)
Dividends/Interest on equity | (84,186) | (67,546) | 20,247
Balance at end of year | 1,071,333 | 976,045 | 748,392
Investments in Special Steel |  |  |
INVESTMENTS IN ASSOCIATES AND JOINT VENTURES |  |  |
Balance at beginning of year | 231,152 | 224,201 | 213,899
Equity in earnings | 28,831 | 8,900 | 6,779
Other comprehensive income | 710 | (1,949) | 3,523
Dividends/Interest on equity | (9,025) |  |
Balance at end of year | 251,668 | 231,152 | 224,201
Other investments |  |  |
INVESTMENTS IN ASSOCIATES AND JOINT VENTURES |  |  |
Balance at beginning of year | 156,093 | 157,999 | 151,398
Equity in earnings | (13,912) | 20,262 | 21,340
Other comprehensive income | (1,415) |  | 2,051
Capital increase | 27,500 |  | 7,000
Dividends/Interest on equity | (21,767) | (22,168) | 23,790
Balance at end of year | R$ 146,499 | R$ 156,093 | R$ 157,999

X
- Definition The decrease in investments accounted for using equity method attributable to a decrease in capital investment. + References No definition available. + Details
Name: | ggb_DecreaseInInvestmentsAccountedForUsingEquityMethodDecreaseInCapitalInvestment
Namespace Prefix: | ggb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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: | ggb_DisclosureOfJointVenturesAndAssociatesLineItems
Namespace Prefix: | ggb_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The increase (decrease) in investments accounted for using equity method attributable to the entity's share of the profit (loss) of associates and joint ventures recognized in other comprehensive income (loss). + References No definition available. + Details
Name: | ggb_IncreaseDecreaseInInvestmentsAccountedForUsingEquityMethodShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesRecognizedInOtherComprehensiveIncomeLoss
Namespace Prefix: | ggb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The increase (decrease) in investments accounted for using equity method attributable to the entity's share of the profit (loss) of associates and joint ventures recognized in profit (loss). + References No definition available. + Details
Name: | ggb_IncreaseDecreaseInInvestmentsAccountedForUsingEquityMethodShareOfProfitLossFromOfAssociatesAndJointVenturesRecognizedInProfitLoss
Namespace Prefix: | ggb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The increase in investments accounted for using equity method attributable to a dividends and interest on equity. + References No definition available. + Details
Name: | ggb_IncreaseInInvestmentsAccountedForUsingEquityMethodDividendsAndInterestOnEquity
Namespace Prefix: | ggb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The increase in investments accounted for using equity method attributable to an increase in capital investment. + References No definition available. + Details
Name: | ggb_IncreaseInInvestmentsAccountedForUsingEquityMethodIncreaseInCapitalInvestment
Namespace Prefix: | ggb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The increase in investments accounted for using equity method attributable to a results in operations. + References No definition available. + Details
Name: | ggb_IncreaseInInvestmentsAccountedForUsingEquityMethodResultsInOperations
Namespace Prefix: | ggb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of investments accounted for using the equity method. The equity method is a method of accounting whereby the investment is initially recognised at cost and adjusted thereafter for the post-acquisition change in the investor's share of net assets of the investee. The investor's profit or loss includes its share of the profit or loss of the investee. The investor's other comprehensive income includes its share of the other comprehensive income of the investee. [Refer: At cost [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2021-01-01 -Paragraph 24 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2021-en-r&anchor=para_24_a&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2021-01-01 -Paragraph B16 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2021-en-r&anchor=para_B16&doctype=Appendix&subtype=B -URIDate 2021-03-24 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 54 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_54_e&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_InvestmentAccountedForUsingEquityMethod
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=ggb_InvestmentsInNorthAmericaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=ggb_InvestmentsInSouthAmericaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=ggb_InvestmentsInSpecialSteelMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=ggb_OthersInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |