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Loan Operations and Lease Operations Portfolio - Summary of Loan Operations and Lease Operations by Type (Detail) - BRL (R$) R$ in Millions | Dec. 31, 2018 | Dec. 31, 2017
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Disclosure of loans and lease operations [Line Items] |  |
Loan operations and lease operations by type | R$ 536,091 | R$ 497,719
Provision for Expected Loss | (33,509) | (36,469)
Total loan operations and lease operations, net of allowance for Expected Credit Loss | 502,582 | 461,250
Corporate [member] |  |
Disclosure of loans and lease operations [Line Items] |  |
Loan operations and lease operations by type | 102,643 | 107,647
Small and medium businesses [member] |  |
Disclosure of loans and lease operations [Line Items] |  |
Loan operations and lease operations by type | 68,812 | 60,290
Foreign [member] | Foreign loans - Latin America [member] |  |
Disclosure of loans and lease operations [Line Items] |  |
Loan operations and lease operations by type | 152,072 | 136,397
Individuals [member] |  |
Disclosure of loans and lease operations [Line Items] |  |
Loan operations and lease operations by type | 212,564 | 193,385
Individuals [member] | Vehicles [member] |  |
Disclosure of loans and lease operations [Line Items] |  |
Loan operations and lease operations by type | 15,920 | 14,165
Individuals [member] | Credit card [member] |  |
Disclosure of loans and lease operations [Line Items] |  |
Loan operations and lease operations by type | 78,255 | 67,413
Individuals [member] | Personal loan [member] |  |
Disclosure of loans and lease operations [Line Items] |  |
Loan operations and lease operations by type | 29,543 | 27,295
Individuals [member] | Payroll loans [member] |  |
Disclosure of loans and lease operations [Line Items] |  |
Loan operations and lease operations by type | 46,878 | 44,716
Individuals [member] | Mortgages [member] |  |
Disclosure of loans and lease operations [Line Items] |  |
Loan operations and lease operations by type | R$ 41,968 | R$ 39,796

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