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Capital management and fair values of financial instruments (Details) - BRL (R$) R$ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Disclosure of detailed information about financial instruments [line items] |  |
Financial assets, accounting value | R$ 33,406,040 | R$ 19,515,659
Financial assets, fair value | 12,079,088 | 5,633,882
Financial liabilities, accounting value | 27,956,065 | 16,482,564
Financial liabilities, fair value | 66,545 | 56,758
Level 2 |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets, fair value | 12,001,701 | 5,524,666
Financial liabilities, fair value | 66,545 | 56,758
Level 3 |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets, fair value | 77,387 | 109,216
Fair value through profit or loss |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities, accounting value | 66,545 | 56,758
Financial liabilities at amortized cost |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities, accounting value | 27,889,520 | 16,425,806
Liabilities with financial institutions |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities, accounting value | 5,341,464 | 1,756,913
Liabilities with financial institutions | Financial liabilities at amortized cost |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities, accounting value | 5,341,464 | 1,756,913
Liabilities with customer |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities, accounting value | 18,333,543 | 12,436,632
Liabilities with customer | Financial liabilities at amortized cost |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities, accounting value | 18,333,543 | 12,436,632
Securities issued [Member].. |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities, accounting value | 3,572,093 | 1,729,436
Securities issued [Member].. | Financial liabilities at amortized cost |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities, accounting value | 3,572,093 | 1,729,436
Derivative financial instrument |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities, accounting value | 66,545 | 56,758
Financial liabilities, fair value | 66,545 | 56,758
Derivative financial instrument | Level 2 |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities, fair value | 66,545 | 56,758
Derivative financial instrument | Fair value through profit or loss |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities, accounting value | 66,545 | 56,758
Borrowing and onlending [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities, accounting value | 25,071 | 27,405
Borrowing and onlending [Member] | Financial liabilities at amortized cost |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities, accounting value | 25,071 | 27,405
Other liabilities [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities, accounting value | 617,349 | 475,420
Other liabilities [Member] | Financial liabilities at amortized cost |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities, accounting value | 617,349 | 475,420
Fair value through profit or loss - FVTPL |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets, accounting value | 865,365 | 232,752
Fair value through other comprehensive income - FVOCI |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets, accounting value | 11,137,938 | 5,291,154
Amortized cost |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets, accounting value | 21,402,736 | 13,991,753
Cash and cash equivalents [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets, accounting value | 500,446 | 2,154,687
Cash and cash equivalents [Member] | Amortized cost |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets, accounting value | 500,446 | 2,154,687
Amounts due from financial institution |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets, accounting value | 2,051,862 | 502,369
Amounts due from financial institution | Amortized cost |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets, accounting value | 2,051,862 | 502,369
Compulsory deposits at Banco Central do Brasil.. |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets, accounting value |  | 1,709,729
Compulsory deposits at Banco Central do Brasil.. | Amortized cost |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets, accounting value |  | 1,709,729
Loans and advances to customers |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets, accounting value | 17,216,362 | 8,790,058
Loans and advances to customers | Amortized cost |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets, accounting value | 17,216,362 | 8,790,058
Underlying security |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets, accounting value | 12,757,687 | 5,812,622
Financial assets, fair value | 11,914,753 | 5,497,153
Underlying security | Level 2 |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets, fair value | 11,914,753 | 5,497,153
Underlying security | Fair value through profit or loss - FVTPL |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets, accounting value | 778,417 | 205,238
Underlying security | Fair value through other comprehensive income - FVOCI |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets, accounting value | 11,137,938 | 5,291,154
Underlying security | Amortized cost |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets, accounting value | 841,333 | 315,470
Derivative financial instrument |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets, accounting value | 86,948 | 27,513
Financial assets, fair value | 86,948 | 27,513
Derivative financial instrument | Level 2 |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets, fair value | 86,948 | 27,513
Derivative financial instrument | Fair value through profit or loss - FVTPL |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets, accounting value | 86,948 | 27,513
Other assets [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets, accounting value | 792,735 | 518,681
Financial assets, fair value | 77,387 | 109,216
Other assets [Member] | Level 3 |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets, fair value | 77,387 | 109,216
Other assets [Member] | Amortized cost |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets, accounting value | R$ 792,735 | R$ 518,681

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- Definition The amount of assets that are: (a) cash; (b) an equity instrument of another entity; (c) a contractual right: (i) to receive cash or another financial asset from another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially favourable to the entity; or (d) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to receive a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose the entity’s own equity instruments do not include puttable financial instruments classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. [Refer: Financial instruments, class [member]; Financial liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2021-01-01 -Paragraph 25 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_25&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2021-01-01 -Paragraph 35H -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_35H&doctype=Standard -URIDate 2021-03-24 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2021-01-01 -Paragraph 35I -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_35I&doctype=Standard -URIDate 2021-03-24 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2021-01-01 -Paragraph 35M -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_35M&doctype=Standard -URIDate 2021-03-24 Reference 5: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2021-01-01 -Paragraph 35N -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_35N&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The amount of liabilities that are: (a) a contractual obligation: (i) to deliver cash or another financial asset to another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially unfavourable to the entity; or (b) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to deliver a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose, rights, options or warrants to acquire a fixed number of the entity’s own equity instruments for a fixed amount of any currency are equity instruments if the entity offers the rights, options or warrants pro rata to all of its existing owners of the same class of its own non-derivative equity instruments. Also, for those purposes the entity’s own equity instruments do not include puttable financial instruments that are classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. As an exception, an instrument that meets the definition of a financial liability is classified as an equity instrument if it has all the features and meets the conditions in paragraphs 16A-16B or paragraphs 16C-16D of IAS 32. [Refer: Financial instruments, class [member]; Financial assets; Derivatives [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2021-01-01 -Paragraph 25 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_25&doctype=Standard -URIDate 2021-03-24 + Details
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