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Post-employment Benefits (Details 6) - BRL (R$) R$ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
IfrsStatementLineItems [Line Items] |  |
Total liabilities or partially covered | R$ 11,893,783 | R$ 10,721,838
Fair value of the plan assets | (11,289,509) | (10,323,018)
Plan coverage status | 604,274 | 398,820
Unrecognized asset | 879,543 | 670,268
Total | 1,483,817 | R$ 1,069,088
Unified Plan [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Total liabilities or partially covered | 6,416,085 |
Fair value of the plan assets | (7,212,015) |
Plan coverage status | (795,930) |
Unrecognized asset | 795,930 |
Total |  |
PlanIII [member] |  |
IfrsStatementLineItems [Line Items] |  |
Total liabilities or partially covered | 3,820,011 |
Fair value of the plan assets | (3,903,624) |
Plan coverage status | (83,613) |
Unrecognized asset | 83,613 |
Total |  |
Assistance Plan [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Total liabilities or partially covered | 1,657,687 |
Fair value of the plan assets | (173,870) |
Plan coverage status | 1,483,817 |
Unrecognized asset |  |
Total | R$ 1,483,817 |

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