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Financial assets at amortized cost - Securities (Details) - BRL (R$) R$ in Millions | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | --- | ---
IfrsStatementLineItems [Line Items] |  |  |
Amortized cost | R$ 1,586,992 | R$ 1,375,782 |
Securities Pledged as Collateral of Funding Transactions of Financial Institutions and Clients | 36,357 | 23,928 |
Government Securities [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Securities Pledged as Collateral of Funding Transactions of Financial Institutions and Clients | 23,639 | 12,570 |
Government Securities [member] | Chile [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Expected loss |  |  | R$ 1
Government Securities [member] | Korea [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Expected loss | 2 |  | 4
Government Securities [member] | Spain [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Expected loss | 2 | 1 | R$ 3
Corporate Securities [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Securities Pledged as Collateral of Funding Transactions of Financial Institutions and Clients | 12,718 | 11,358 |
Financial assets securities [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Amortized cost | 219,315 | 147,746 |
Expected loss | (2,038) | (1,948) |
Net amortized cost | 217,277 | 145,798 |
Financial assets securities [Member] | Brazilian government securities [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Amortized cost | 91,810 | 68,045 |
Expected loss | (30) | (37) |
Net amortized cost | 91,780 | 68,008 |
Financial assets securities [Member] | Government Securities [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Amortized cost | 39,243 | 24,888 |
Expected loss | (11) | (7) |
Net amortized cost | 39,232 | 24,881 |
Financial assets securities [Member] | Government Securities [member] | Colombia [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Amortized cost | 820 | 925 |
Expected loss | (1) | (1) |
Net amortized cost | 819 | 924 |
Financial assets securities [Member] | Government Securities [member] | Chile [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Amortized cost | 4,805 | 828 |
Net amortized cost | 4,805 | 828 |
Financial assets securities [Member] | Government Securities [member] | Korea [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Amortized cost | 10,365 | 5,604 |
Expected loss | (2) |  |
Net amortized cost | 10,363 | 5,604 |
Financial assets securities [Member] | Government Securities [member] | Spain [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Amortized cost | 9,924 | 6,132 |
Expected loss | (2) | (1) |
Net amortized cost | 9,922 | 6,131 |
Financial assets securities [Member] | Government Securities [member] | Mexico [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Amortized cost | 13,246 | 11,377 |
Expected loss | (6) | (5) |
Net amortized cost | 13,240 | 11,372 |
Financial assets securities [Member] | Government Securities [member] | Paraguay [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Amortized cost | 59 |  |
Net amortized cost | 59 |  |
Financial assets securities [Member] | Government Securities [member] | Uruguay [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Amortized cost | 24 | 22 |
Net amortized cost | 24 | 22 |
Financial assets securities [Member] | Corporate Securities [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Amortized cost | 88,262 | 54,813 |
Expected loss | (1,997) | (1,904) |
Net amortized cost | 86,265 | 52,909 |
Financial assets securities [Member] | Corporate Securities [Member] | Rural Product Note [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Amortized cost | 26,129 | 5,906 |
Expected loss | (140) | (14) |
Net amortized cost | 25,989 | 5,892 |
Financial assets securities [Member] | Corporate Securities [Member] | Bank Deposit Certificates [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Amortized cost | 98 | 110 |
Expected loss |  | (1) |
Net amortized cost | 98 | 109 |
Financial assets securities [Member] | Corporate Securities [Member] | Real Estate Receivables Certificates [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Amortized cost | 5,738 | 3,988 |
Expected loss | (4) | (1) |
Net amortized cost | 5,734 | 3,987 |
Financial assets securities [Member] | Corporate Securities [Member] | Debentures [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Amortized cost | 47,785 | 39,403 |
Expected loss | (1,835) | (1,883) |
Net amortized cost | 45,950 | 37,520 |
Financial assets securities [Member] | Corporate Securities [Member] | Eurobonds and others [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Amortized cost | 118 | 457 |
Expected loss |  | (2) |
Net amortized cost | 118 | 455 |
Financial assets securities [Member] | Corporate Securities [Member] | Financial bills [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Amortized cost | 113 | 51 |
Net amortized cost | 113 | 51 |
Financial assets securities [Member] | Corporate Securities [Member] | Promissory And Commercial Notes [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Amortized cost | 7,363 | 4,219 |
Expected loss | (13) | (2) |
Net amortized cost | 7,350 | 4,217 |
Financial assets securities [Member] | Corporate Securities [Member] | Other [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Amortized cost | 918 | 679 |
Expected loss | (5) | (1) |
Net amortized cost | R$ 913 | R$ 678 |

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- Definition The amount of financial assets at amortised cost. The amortised cost is the amount at which financial assets are measured at initial recognition minus principal repayments, plus or minus the cumulative amortisation using the effective interest method of any difference between that initial amount and the maturity amount, and adjusted for any impairment. [Refer: Financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2022-03-24 -Paragraph 8 -Subparagraph f -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2022-en-r&anchor=para_8_f&doctype=Standard -URIDate 2022-03-24 + Details
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