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Risk and Capital Management (Details 18) - BRL (R$)
R$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Group Accident Insurance [Member]      
IfrsStatementLineItems [Line Items]      
Insurance premiums R$ 976 R$ 884 R$ 849
Retained premium R$ 973 R$ 883 R$ 847
Retention 99.70% 99.90% 99.80%
Individual Accident [Member]      
IfrsStatementLineItems [Line Items]      
Insurance premiums R$ 153 R$ 176 R$ 192
Retained premium R$ 149 R$ 175 R$ 187
Retention 97.50% 99.40% 97.40%
Home Insurance in Market Policies Credit Life [Member]      
IfrsStatementLineItems [Line Items]      
Insurance premiums R$ 1,412 R$ 1,008 R$ 624
Retained premium R$ 1,412 R$ 1,008 R$ 624
Retention 100.00% 100.00% 100.00%
Group Life [Member]      
IfrsStatementLineItems [Line Items]      
Insurance premiums R$ 1,422 R$ 1,168 R$ 956
Retained premium R$ 1,422 R$ 1,165 R$ 955
Retention 100.00% 99.70% 99.90%