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Schedule of actuarial assumptions used (Details)
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Actuarial financing method Projected unit credit Projected unit credit
Functional currency Real (R$) Real (R$)
Nominal discount rate Millennium Plan: 10.71% Plan 35%: 10.53% Supplementation : 10.54% Millennium Plan: 6.95% Plan 35%: 6.24% Supplementation: 6.44%
Actuarial assumption of expected rates of inflation 5.03% 3.32%
Actuarial assumption of expected rates of salary increases 6.08% 4.35%
Actuarial assumption of expected rates of pension increases 5.03% 3.32%
Rate of return on investments Millennium Plan: 10.71% Plan 35%: 10.53% Supplementation : 10.54% Millennium Plan: 6.95% Plan 35%: 6.24% Supplementation: 6.44%
General mortality table Millennium Plan: AT-2012 segregated by gender Plan 35%: AT-2000 Male aggravated by 15% Supplementation: AT-2000 aggravated by 10% segregated by gender Millennium Plan: AT-2012 segregated by gender Plan 35%: AT-2000 Male aggravated by 15% Supplementation: AT-2000 aggravated by 10% segregated by gender
Disability table 35% Plan Light Medium. Millenium Plan: Prudential (-10%) Supplementation: not applicable 35% Plan Light Medium. Millenium Plan: Prudential (-10%) Supplementation: not applicable
Disability mortality table Millenium Plan: AT-71 35% Plan : MI-2006 -10% M&F Supplementation: Winklevoss -10% Millenium Plan: AT-71 35% Plan : MI-2006 -10% M&F ;Supplementation: Winklevoss -10%
Turnover table Millenium plan 5% per annum, zero for plans 35% and Supplementation Millenium plan 5% per annum, zero for plans 35% and Supplementation
Retirement age 100% on the first date he/she becomes eligible for programmed retirement benefit under the plan 100% on the first date he/she becomes eligible for programmed retirement benefit under the plan
Household of active participants 95% will be married at the time of retirement, with the wife being 4 years younger than the husband 95% will be married at the time of retirement, with the wife being 4 years younger than the husband