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Risk and Capital Management (Details 14) - BRL (R$)
R$ in Millions
Dec. 31, 2022
Dec. 31, 2021
IfrsStatementLineItems [Line Items]    
Financial guarantees R$ 91,779 R$ 82,910
Commitments to be released 405,244 391,015
Letters of credit to be released 47,354 45,773
Contractual commitments-Fixed assets and Intangible 3 3
Total 544,380 519,701
Not later than one month [member]    
IfrsStatementLineItems [Line Items]    
Financial guarantees 2,987 3,742
Commitments to be released 161,822 151,235
Letters of credit to be released 47,354 45,773
Total 212,163 200,750
Thirty one to three hundred and sixty five days due [Member]    
IfrsStatementLineItems [Line Items]    
Financial guarantees 31,548 28,530
Commitments to be released 50,552 35,605
Contractual commitments-Fixed assets and Intangible   3
Total 82,100 64,138
Three hundred and sixty six to seven hundred and twenty days due [Member]    
IfrsStatementLineItems [Line Items]    
Financial guarantees 12,731 11,046
Commitments to be released 20,386 18,541
Total 33,117 29,587
Over seven hundred and twenty days due [Member]    
IfrsStatementLineItems [Line Items]    
Financial guarantees 44,513 39,592
Commitments to be released 172,484 185,634
Contractual commitments-Fixed assets and Intangible 3  
Total R$ 217,000 R$ 225,226