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v3.21.1

23 Post-employment Benefits (Details 3) | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Inflation P.Y. [member] |  |
Disclosure of defined benefit plans [line items] |  |
Nominal rate | 4.00% | 2.90%
Expected Rate Of Discount/Return P.Y. [member] | Unified Plan Defined Benefit [member] |  |
Disclosure of defined benefit plans [line items] |  |
Real rate | 2.85% | 3.05%
Nominal rate | 6.96% | 6.04%
Expected Rate Of Discount/Return P.Y. [member] | Unified Plan - Balance [member] |  |
Disclosure of defined benefit plans [line items] |  |
Real rate | 3.20% | 3.20%
Nominal rate | 7.33% | 6.19%
Expected Rate Of Discount/Return P.Y. [member] | Plan III [member] |  |
Disclosure of defined benefit plans [line items] |  |
Real rate | 3.40% | 3.20%
Nominal rate | 7.54% | 6.19%
Expected Rate Of Discount/Return P.Y. [member] | Assistance Plan [member] |  |
Disclosure of defined benefit plans [line items] |  |
Real rate | 3.20% | 3.30%
Nominal rate | 7.33% | 6.30%
Salary Growth [member] | Plan III [member] |  |
Disclosure of defined benefit plans [line items] |  |
Real rate | 1.00% | 1.00%
Nominal rate | 5.04% | 3.93%
Salary Growth [member] | Unified Plan [member] |  |
Disclosure of defined benefit plans [line items] |  |
Real rate | 0.00% | 1.00%
Nominal rate | 4.00% | 3.93%
Demographic [member] | Mortality Table [member] |  |
Disclosure of defined benefit plans [line items] |  |
Nominal assumption | AT - 2000 | AT - 2000
Demographic [member] | Mortality Table Of Individuals With Permanent Disability [member] |  |
Disclosure of defined benefit plans [line items] |  |
Nominal assumption | WINKLEVOSS | WINKLEVOSS
Demographic [member] | Table Of New Disability Benefit Vested [member] |  |
Disclosure of defined benefit plans [line items] |  |
Nominal assumption | TASA 1927 | TASA 1927

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