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Interest and similar income and expenses and Income of financial assets and liabilities at fair value through profit or loss - Additional Information (Detail) - BRL (R$) R$ in Millions | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Disclosure of financial assets and liabilities measured at fair value [Line Items] |  |
Financial assets, expense recognized on expected losses | R$ 1,127 | R$ (419)
Financial assets at fair value through other comprehensive income [member] |  |
Disclosure of financial assets and liabilities measured at fair value [Line Items] |  |
Total loss, net of reversals | 10 | (7)
Financial assets at amortised cost, class [member] |  |
Disclosure of financial assets and liabilities measured at fair value [Line Items] |  |
Total loss, net of reversals | R$ 1,117 | R$ (412)

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- Definition The amount of impairment loss on financial assets. [Refer: Financial assets; Impairment loss] + 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 20 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_20_e&doctype=Standard&book=b -URIDate 2021-03-24 + Details
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- Definition Line items represent financial assets and liabilities measured at fair value. + References No definition available. + Details
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- Definition Gain loss on reversal of derivatives. + References No definition available. + Details
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- Details
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- Details
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