The decrease (increase) in a net defined benefit liability (asset) resulting from actuarial gains (losses) arising from changes in financial assumptions that result in remeasurements of the net defined benefit liability (asset). Financial assumptions deal with items such as: (a) the discount rate; (b) benefit levels, excluding any cost of the benefits to be met by employees, and future salary; (c) in the case of medical benefits, future medical costs, including claim handling costs (ie the costs that will be incurred in processing and resolving claims, including legal and adjuster's fees); and (d) taxes payable by the plan on contributions relating to service before the reporting date or on benefits resulting from that service. [Refer: Net defined benefit liability (asset)]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 19
-IssueDate 2022-03-24
-Paragraph 141
-Subparagraph c
-Clause iii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2022-en-r&anchor=para_141_c_iii&doctype=Standard
-URIDate 2022-03-24

Name:	ifrs-full_ActuarialGainsLossesArisingFromChangesInFinancialAssumptionsNetDefinedBenefitLiabilityAsset
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Equity (Details 3) - BRL (R$) R$ in Thousands	12 Months Ended
Equity (Details 3) - BRL (R$) R$ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
IfrsStatementLineItems [Line Items]
Other comprehensive loss, beginning	R$ 46,374
Actuarial gains (losses)	131,269	R$ 447,376	R$ 511,152
Other comprehensive loss, ending	177,643
G 1 Plan [Member]
IfrsStatementLineItems [Line Items]
Other comprehensive loss, beginning	212,114
Actuarial gains (losses)	(30,497)
Other comprehensive loss, ending	181,617
G 0 Plan [Member]
IfrsStatementLineItems [Line Items]
Other comprehensive loss, beginning	(165,740)
Actuarial gains (losses)	161,766
Other comprehensive loss, ending	R$ (3,974)