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Hedge Accounting - Schedule of the Effect of Hedge Accounting on the Financial Position and Performance (Parenthetical) (Detail) - BRL (R$) | Dec. 31, 2021 | Dec. 31, 2020
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Disclosure of detailed information about hedges [line items] |  |
Nominal Value | R$ 148,461,000,000 | R$ 215,277,000,000
Hedged Instrumnets Impacted By Change In Interest Rates [Member] |  |
Disclosure of detailed information about hedges [line items] |  |
Nominal Value | R$ 6,422 | R$ 4,915

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- Definition The nominal amount of a credit derivative. [Refer: Derivatives [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2021-01-01 -Paragraph 24G -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_24G_a&doctype=Standard -URIDate 2021-03-24 + Details
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Balance Type: | na
Period Type: | instant

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |