XML 149 R124.htm IDEA: XBRL DOCUMENT v3.24.1

RELATED-PARTY TRANSACTIONS - Intercompany loans (Details) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
RELATED PARTY TRANSACTIONS
Liabilities	R$ (24,992)	R$ (24,890)
Net financial (expense) income		(199)	R$ 6,089
Bradley Steel Processors
RELATED PARTY TRANSACTIONS
Liabilities	R$ (24,992)	R$ (24,890)

X

- Definition

Interest income (expense) on loans with related parties.

+ References

No definition available.

+ Details

Name:	ggb_InterestIncomeExpenseOnLoansWithRelatedParties
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 members defined in one or many axes of the table.

+ References

No definition available.

+ Details

Name:	ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount of non-current payables due to related parties. [Refer: Related parties [member]; Payables to related parties]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2023-01-01
-Paragraph 78
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_78&doctype=Standard
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_NoncurrentPayablesToRelatedParties
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	ifrs-full_JointVenturesAxis=ggb_BradleySteelProcessorsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: