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Financial risk management - Credit risk - guarantees on real estate loans (Details) - BRL (R$) R$ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Disclosure of credit risk exposure [line items] |  |
Securities | R$ 33,406,040 | R$ 19,515,659
Real Estate loans |  |
Disclosure of credit risk exposure [line items] |  |
Securities | 5,121,411 | 3,471,354
Real Estate loans | Credit Grade Where Loan To Value Ratio Is Lower Than 30 Percent |  |
Disclosure of credit risk exposure [line items] |  |
Securities | 582,421 | 467,960
Real Estate loans | Credit Grade Where Loan To Value Ratio Is Between 31 and 50 Percent |  |
Disclosure of credit risk exposure [line items] |  |
Securities | 1,584,454 | 1,291,130
Real Estate loans | Credit Grade Where Loan To Value Ratio Is Between 51 and 70 Percent |  |
Disclosure of credit risk exposure [line items] |  |
Securities | 2,116,015 | 1,314,740
Real Estate loans | Credit Grade Where Loan To Value Ratio Is Between 71 and 90 Percent |  |
Disclosure of credit risk exposure [line items] |  |
Securities | 756,870 | 370,357
Real Estate loans | Credit Grade Where Loan To Value Ratio Is Higher Than 90 Percent |  |
Disclosure of credit risk exposure [line items] |  |
Securities | R$ 81,651 | R$ 27,167

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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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