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Financial risk management - Credit risk - by rating grade (Details) - BRL (R$) R$ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Disclosure of credit risk exposure [line items] |  |
Securities | R$ 33,406,040 | R$ 19,515,659
Low Risk |  |
Disclosure of credit risk exposure [line items] |  |
Securities | 16,562,388 |
High Risk |  |
Disclosure of credit risk exposure [line items] |  |
Securities | 653,973 |
Credit risk rating grade AA | Low Risk |  |
Disclosure of credit risk exposure [line items] |  |
Securities | 6,174,695 |
Credit risk rating grade A | Low Risk |  |
Disclosure of credit risk exposure [line items] |  |
Securities | 8,879,596 |
Credit risk rating grade B | Low Risk |  |
Disclosure of credit risk exposure [line items] |  |
Securities | 738,198 |
Credit risk rating grade C | Low Risk |  |
Disclosure of credit risk exposure [line items] |  |
Securities | 769,900 |
Credit risk rating grade D | High Risk |  |
Disclosure of credit risk exposure [line items] |  |
Securities | 218,136 |
Credit risk rating grade E | High Risk |  |
Disclosure of credit risk exposure [line items] |  |
Securities | 100,651 |
Credit risk rating grade F | High Risk |  |
Disclosure of credit risk exposure [line items] |  |
Securities | 77,135 |
Credit risk rating grade G | High Risk |  |
Disclosure of credit risk exposure [line items] |  |
Securities | 82,443 |
Credit risk rating grade H | High Risk |  |
Disclosure of credit risk exposure [line items] |  |
Securities | 175,608 |
Loans and advances to customer |  |
Disclosure of credit risk exposure [line items] |  |
Securities | 17,216,362 | 8,790,058
Loans and advances to customer | Low Risk |  |
Disclosure of credit risk exposure [line items] |  |
Securities | 16,156,725 | 8,530,599
Loans and advances to customer | High Risk |  |
Disclosure of credit risk exposure [line items] |  |
Securities | 1,059,637 | 259,458
Loans and advances to customer | Credit risk rating grade AA |  |
Disclosure of credit risk exposure [line items] |  |
Securities | 6,174,695 | 4,191,808
Loans and advances to customer | Credit risk rating grade AA | Low Risk |  |
Disclosure of credit risk exposure [line items] |  |
Securities |  | 4,191,808
Loans and advances to customer | Credit risk rating grade A |  |
Disclosure of credit risk exposure [line items] |  |
Securities | 8,879,596 | 3,795,674
Loans and advances to customer | Credit risk rating grade A | Low Risk |  |
Disclosure of credit risk exposure [line items] |  |
Securities |  | 3,795,674
Loans and advances to customer | Credit risk rating grade B |  |
Disclosure of credit risk exposure [line items] |  |
Securities | 738,198 | 271,617
Loans and advances to customer | Credit risk rating grade B | Low Risk |  |
Disclosure of credit risk exposure [line items] |  |
Securities |  | 271,617
Loans and advances to customer | Credit risk rating grade C |  |
Disclosure of credit risk exposure [line items] |  |
Securities | 769,900 | 271,500
Loans and advances to customer | Credit risk rating grade C | Low Risk |  |
Disclosure of credit risk exposure [line items] |  |
Securities |  | 271,500
Loans and advances to customer | Credit risk rating grade D |  |
Disclosure of credit risk exposure [line items] |  |
Securities | 218,136 | 66,789
Loans and advances to customer | Credit risk rating grade D | High Risk |  |
Disclosure of credit risk exposure [line items] |  |
Securities |  | 66,789
Loans and advances to customer | Credit risk rating grade E |  |
Disclosure of credit risk exposure [line items] |  |
Securities | 100,651 | 43,607
Loans and advances to customer | Credit risk rating grade E | High Risk |  |
Disclosure of credit risk exposure [line items] |  |
Securities |  | 43,607
Loans and advances to customer | Credit risk rating grade F |  |
Disclosure of credit risk exposure [line items] |  |
Securities | 77,135 | 27,699
Loans and advances to customer | Credit risk rating grade F | High Risk |  |
Disclosure of credit risk exposure [line items] |  |
Securities |  | 27,699
Loans and advances to customer | Credit risk rating grade G |  |
Disclosure of credit risk exposure [line items] |  |
Securities | 82,443 | 26,325
Loans and advances to customer | Credit risk rating grade G | High Risk |  |
Disclosure of credit risk exposure [line items] |  |
Securities |  | 26,325
Loans and advances to customer | Credit risk rating grade H |  |
Disclosure of credit risk exposure [line items] |  |
Securities | R$ 175,608 | 90,912
Loans and advances to customer | Credit risk rating grade H | High Risk |  |
Disclosure of credit risk exposure [line items] |  |
Securities |  | 90,912
Loans and advances to customer | Credit risk rating grade HH |  |
Disclosure of credit risk exposure [line items] |  |
Securities |  | 4,127
Loans and advances to customer | Credit risk rating grade HH | High Risk |  |
Disclosure of credit risk exposure [line items] |  |
Securities |  | R$ 4,127

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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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