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Derivatives - Schedule of Notional Amount of Purchased Credit Derivatives (Detail) - BRL (R$) R$ in Millions | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Disclosure Of Information About Notional Amounts Of Credit Derivative Portfolios [Line Items] |  |
Notional amount of credit protection sold | R$ (15,447) | R$ (16,355)
Notional amount of credit protection purchased with identical underlying amount | 6,109 | 3,705
Net position | (9,338) | (12,650)
Credit default swaps [member] |  |
Disclosure Of Information About Notional Amounts Of Credit Derivative Portfolios [Line Items] |  |
Notional amount of credit protection sold | (9,837) | (8,501)
Notional amount of credit protection purchased with identical underlying amount | 6,109 | 3,705
Net position | (3,728) | (4,796)
Total return swap [Member] |  |
Disclosure Of Information About Notional Amounts Of Credit Derivative Portfolios [Line Items] |  |
Notional amount of credit protection sold | (5,610) | (7,854)
Net position | R$ (5,610) | R$ (7,854)

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- Definition Line items representing information about notional amounts of credit derivative portfolios. + References No definition available. + Details
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- Definition Net position. + References No definition available. + Details
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Balance Type: | credit
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- Definition Notional amountof credit protection purchasedwith identical underlying amount. + References No definition available. + Details
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- Definition Notional amountof credit protection sold. + References No definition available. + Details
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- Details
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- Details
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