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Loan and Lease Operations - Summary of Reconciliation of Expected Loan Losses for Loan Operations and Lease Operations (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 loans and lease operations [Abstract] |  |  |
Expected loan losses for financial guarantees pledged | R$ (767) | R$ (907) | R$ (837)
Commitments released | R$ (4,433) | R$ (3,485) | R$ (3,303)

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- Definition Expected loan losses for financial guarantees pledged. + References No definition available. + Details
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