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Securities Sold Under Repurchase Agreements and Interbank and Institutional Market Funds - Summary of Interbank Market Debt (parenthethical) (Detail) - BRL (R$) R$ in Millions | Dec. 31, 2021 | Dec. 31, 2020
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Disclosure Of Repurchase Agreements [Line Items] |  |
Allowance account for credit losses of financial assets | R$ 41,079 | R$ 47,051
London Interbank Offered Rate LIBOR [Member] |  |
Disclosure Of Repurchase Agreements [Line Items] |  |
Allowance account for credit losses of financial assets | R$ 34,942 | R$ 34,372

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- Definition The amount of an allowance account used to record impairments to financial assets due to credit losses. [Refer: Financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2023-01-01 -Name IFRS -Number 7 -IssueDate 2021-01-01 -Paragraph 16 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_16&doctype=Standard&book=b -URIDate 2021-03-24 + Details
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- Definition Disclosure Of Repurchase Agreements [Line Items] + References No definition available. + Details
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- Details
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