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v3.22.1

Schedule of independent actuaries estimate for the expense amount (Details) - BRL (R$) R$ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2019
IfrsStatementLineItems [Line Items] |  |
Current service cost | R$ 18 | R$ 17
Interest on the actuarial obligation | 1,594 |
Expected return on the assets of the Plan | (941) |
Estimated total expense in 2022 as per actuarial report | 671 |
Pension Plans And Retirement Supplement Plans [member] |  |
IfrsStatementLineItems [Line Items] |  |
Current service cost | 2 | 1
Interest on the actuarial obligation | 1,224 |
Expected return on the assets of the Plan | (941) |
Estimated total expense in 2022 as per actuarial report | 285 |
Health Plan [member] |  |
IfrsStatementLineItems [Line Items] |  |
Current service cost | 16 | 14
Interest on the actuarial obligation | 363 |
Expected return on the assets of the Plan |  |
Estimated total expense in 2022 as per actuarial report | 379 |
Dental Plan [member] |  |
IfrsStatementLineItems [Line Items] |  |
Current service cost |  |
Interest on the actuarial obligation | 7 |
Expected return on the assets of the Plan |  |
Estimated total expense in 2022 as per actuarial report | 7 |
life insurance [member] |  |
IfrsStatementLineItems [Line Items] |  |
Current service cost |  | R$ 2
Interest on the actuarial obligation |  |
Expected return on the assets of the Plan |  |
Estimated total expense in 2022 as per actuarial report |  |

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