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Risk and Capital Management - Summary of Assets and Liabilities According to Their Remaining Contractual Maturities, Considering Their Undiscounted Flows (Parenthetical) (Detail) - BRL (R$) R$ in Millions | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Disclosure of assets and liabilities according to their remaining contractual maturities [Line Items] |  |  |
Deposits in Central Bank | R$ 104,592 | R$ 90,059 |
Securities under guarantee transactions | 9,266 | 11,119 |
Payment to merchants | 92,011 | 71,820 |
Amount of liabilities from transactions related to credit assignments | 1,004 | 1,623 |
Compulsory deposits with the Central Bank of Brazil | (14,533) | 1,189 | R$ 2,900
Interbank deposits [member] |  |  |
Disclosure of assets and liabilities according to their remaining contractual maturities [Line Items] |  |  |
Compulsory deposits with the Central Bank of Brazil | R$ 40,221 | R$ 32,477 |

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- Definition Disclosure of assets and liabilities according to their remaining contractual maturities [Line Items] + References No definition available. + Details
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- Details
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