XML 193 R175.htm IDEA: XBRL DOCUMENT v3.21.1
23 Post-employment Benefits (Details 9)
R$ in Thousands
 12 Months Ended
Dec. 31, 2020
BRL (R$)
Plan III [member]  
Disclosure of defined benefit plans [line items]  
Cost of current service R$ 4,010
Estimated cost of interest 246,255
Expected return on plan assets (245,291)
Expected employee contributions 2,003
Costs (income or loss) 2,971
Assistance Plan [member]  
Disclosure of defined benefit plans [line items]  
Cost of current service 7,368
Estimated cost of interest 125,133
Expected return on plan assets (15,994)
Expected employee contributions
Costs (income or loss) 116,507
Unified Plan [member]  
Disclosure of defined benefit plans [line items]  
Cost of current service 388
Estimated cost of interest 481,656
Expected return on plan assets (530,144)
Expected employee contributions (136)
Costs (income or loss) R$ (48,236)