XML 65 R42.htm IDEA: XBRL DOCUMENT
v3.21.1

TRADE ACCOUNTS RECEIVABLE (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2020
TRADE ACCOUNTS RECEIVABLE |
Schedule of trade accounts receivable |
|  | 2020 |  | 2019
Trade accounts receivable - in Brazil |  | 2,081,740 |  | 1,193,971
Trade accounts receivable - exports from Brazil |  | 26,121 |  | 117,274
Trade accounts receivable - outside of Brazil |  | 1,766,555 |  | 1,459,204
(-) Impairment loss on trade receivables |  | (137,146) |  | (98,079)
|  | 3,737,270 |  | 2,672,370
Schedule of accounts receivable by aging |
|  | 2020 |  | 2019
Current |  | 3,466,000 |  | 2,226,121
Past-due: |  |  |  |
Up to 30 days |  | 259,756 |  | 381,999
From 31 to 60 days |  | 48,905 |  | 58,972
From 61 to 90 days |  | 9,355 |  | 30,202
From 91 to 180 days |  | 13,636 |  | 15,384
From 181 to 360 days |  | 15,899 |  | 16,739
Above 360 days |  | 60,865 |  | 41,032
(-) Impairment on financial assets |  | (137,146) |  | (98,079)
|  | 3,737,270 |  | 2,672,370
Schedule of the changes in impairment on financial assets |
Balance as of January 1, 2018 |  | (179,702)
Impairment on financial assets during the year |  | (111,900)
Recoveries in the year |  | 101,986
Write-offs |  | 39,943
Exchange variation |  | (5,136)
Assets held for sale |  | (3,348)
Balance as of December 31, 2018 |  | (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)

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: | nonnum: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: | nonnum: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: | nonnum: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