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Post-employment Benefits (Details 7) - BRL (R$) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
IfrsStatementLineItems [Line Items] |  |
Present value of net actuarial obligations, beginning balance | R$ 10,973,812 |
Present value of net actuarial obligations, ending balance | 10,721,838 | R$ 10,973,812
Unified Plan [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Present value of net actuarial obligations, beginning balance | 6,145,601 | 6,760,824
Cost of services | 169 | 252
Cost of interest | 673,724 | 481,656
Benefits paid | (523,792) | (511,621)
Actuarial (gain) losses | (266,172) | (585,510)
Present value of net actuarial obligations, ending balance | 6,029,530 | 6,145,601
Plan I I I [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Present value of net actuarial obligations, beginning balance | 3,337,093 | 3,344,723
Cost of services | 2,018 | 2,006
Cost of interest | 364,901 | 246,256
Benefits paid | (264,096) | (233,908)
Actuarial (gain) losses | 17,621 | (21,984)
Present value of net actuarial obligations, ending balance | 3,457,537 | 3,337,093
Assistance Plan [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Present value of net actuarial obligations, beginning balance | 1,491,118 | 1,714,637
Cost of services | 6,172 | 7,368
Cost of interest | 155,389 | 125,132
Benefits paid | (342) |
Actuarial (gain) losses | (417,566) | (356,019)
Present value of net actuarial obligations, ending balance | R$ 1,234,771 | R$ 1,491,118

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- Definition The increase (decrease) in the net defined benefit liability (asset) resulting from employee service in the current period. [Refer: Net defined benefit liability (asset)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2022-03-24 -Paragraph 141 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2022-en-r&anchor=para_141_a&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The decrease (increase) in a net defined benefit liability (asset) resulting from the remeasurement of that net defined benefit liability (asset). [Refer: Net defined benefit liability (asset)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2022-03-24 -Paragraph 141 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2022-en-r&anchor=para_141_c&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The amount of deficit or surplus in a defined benefit plan, adjusted for any effect of limiting a net defined benefit asset to the asset ceiling. [Refer: Defined benefit plans [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2022-03-24 -Paragraph 140 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2022-en-r&anchor=para_140_a&doctype=Standard -URIDate 2022-03-24 + Details
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