XML 64 R39.htm IDEA: XBRL DOCUMENT
v3.22.1

TRADE ACCOUNTS RECEIVABLE (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2021
TRADE ACCOUNTS RECEIVABLE. |
Schedule of trade accounts receivable | ​
​ | ​ | ​ | ​ | ​
​ |  | 2021 |  | 2020
Trade accounts receivable - in Brazil |  | 2,640,011 |  | 2,081,740
Trade accounts receivable - exports from Brazil |  | 249,834 |  | 26,121
Trade accounts receivable - outside of Brazil |  | 2,632,002 |  | 1,766,555
(-) Impairment loss on trade receivables |  | (107,772) |  | (137,146)
​ |  | 5,414,075 |  | 3,737,270
Schedule of accounts receivable by aging | ​
​ | ​ | ​ | ​ | ​
​ |  | 2021 |  | 2020
Current |  | 4,646,175 |  | 3,466,000
Past-due: |  |  |  |
Up to 30 days |  | 494,866 |  | 259,756
From 31 to 60 days |  | 139,415 |  | 48,905
From 61 to 90 days |  | 32,245 |  | 9,355
From 91 to 180 days |  | 169,959 |  | 13,636
From 181 to 360 days |  | 8,220 |  | 15,899
Above 360 days |  | 30,967 |  | 60,865
(-) Impairment on financial assets |  | (107,772) |  | (137,146)
​ |  | 5,414,075 |  | 3,737,270
Schedule of the changes in impairment on financial assets | ​
​ | ​ | ​
Balance as of January 1, 2019 |  | (158,157)
Impairment on financial assets during the year |  | (81,243)
Recoveries in the year |  | 60,199
Write-offs |  | 78,635
Exchange variation | ​ | 2,487
Balance as of December 31, 2019 |  | (98,079)
Impairment on financial assets during the year |  | (148,548)
Recoveries in the year |  | 84,416
Write-offs |  | 36,210
Exchange variation | ​ | (11,145)
Balance as of December 31, 2020 |  | (137,146)
Impairment on financial assets during the year |  | (55,731)
Recoveries in the year |  | 56,088
Write-offs | ​ | 9,892
Loss of control of subsidiary (note 3.4) | ​ | 23,203
Exchange variation | ​ | (4,078)
Balance as of December 31, 2021 |  | (107,772)

X
- Definition The disclosure of detailed information about accounts receivable by aging. + References No definition available. + Details
Name: | ggb_DisclosureOfAccountsReceivableByAgingTableTextBlock
Namespace Prefix: | ggb_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition The disclosure of detailed information about changes in the impairment of financial assets. + References No definition available. + Details
Name: | ggb_DisclosureOfChangesInImpairmentOnFinancialAssetsTableTextBlock
Namespace Prefix: | ggb_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition The disclosure of detailed information about trade accounts receivable. + References No definition available. + Details
Name: | ggb_DisclosureOfTradeAccountsReceivablesTableTextBlock
Namespace Prefix: | ggb_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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