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Interbank Deposits and Securities Purchased Under Agreements to Resell - Summary of Interbank Deposits and Securities Purchased Under Agreements to Resell (Detail) - BRL (R$) R$ in Millions | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | --- | ---
Disclosure of interbank deposits and securities purchased under agreements to resell [Line Items] |  |  |
Securities purchased under agreements to resell | R$ 46,820 | R$ 55,711 | R$ 35,883
Voluntary Investments With The Central Bank Of Brazil | 5,800 | 0 | 0
Interbank deposits | 12,555 | 3,888 | R$ 4,561
Interbank deposits and securities purchased under agreements to resell [Member] |  |  |
Disclosure of interbank deposits and securities purchased under agreements to resell [Line Items] |  |  |
Securities purchased under agreements to resell | 169,711 | 239,935 |
Collateral held | 54,961 | 63,174 |
Collateral repledge | 103,968 | 150,591 |
Assets received as collateral with right to sell or repledge | 22,139 | 20,367 |
Assets received as collateral without right to sell or repledge | 81,829 | 130,224 |
Collateral sold | 10,782 | 26,170 |
Voluntary Investments With The Central Bank Of Brazil | 5,800 |  |
Interbank deposits | 69,934 | 55,637 |
Total | 245,445 | 295,572 |
Current [member] | Interbank deposits and securities purchased under agreements to resell [Member] |  |  |
Disclosure of interbank deposits and securities purchased under agreements to resell [Line Items] |  |  |
Securities purchased under agreements to resell | 168,937 | 239,848 |
Collateral held | 54,187 | 63,087 |
Collateral repledge | 103,968 | 150,591 |
Assets received as collateral with right to sell or repledge | 22,139 | 20,367 |
Assets received as collateral without right to sell or repledge | 81,829 | 130,224 |
Collateral sold | 10,782 | 26,170 |
Voluntary Investments With The Central Bank Of Brazil | 5,800 |  |
Interbank deposits | 64,049 | 48,586 |
Total | 238,786 | 288,434 |
Non-current [member] | Interbank deposits and securities purchased under agreements to resell [Member] |  |  |
Disclosure of interbank deposits and securities purchased under agreements to resell [Line Items] |  |  |
Securities purchased under agreements to resell | 774 | 87 |
Collateral held | 774 | 87 |
Interbank deposits | 5,885 | 7,051 |
Total | R$ 6,659 | R$ 7,138 |

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- Definition The fair value of collateral held that is permitted to be sold or repledged in the absence of default by the owner of the collateral. [Refer: At fair value [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2021-01-01 -Paragraph 15 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_15_a&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition Collateral held under agreement to resell. + References No definition available. + Details
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- Definition Interbank deposits and securities purchased under agreements to resell. + References No definition available. + Details
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