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Taxes - Summary of Calculation of Tax Rates (Parenthetical) (Detail) |  |  | 12 Months Ended
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Mar. 01, 2019 | Feb. 28, 2019 | Dec. 31, 2021
Disclosure of effective income tax rate [Line Items] |  |  |
Social contribution of tax rate | 20.00% | 15.00% | 25.00%
Financial institutions [member] |  |  |
Disclosure of effective income tax rate [Line Items] |  |  |
Social contribution of tax rate |  |  | 25.00%
Nonfinancial Entities [Member] |  |  |
Disclosure of effective income tax rate [Line Items] |  |  |
Social contribution of tax rate |  |  | 9.00%
Insurance Capitalization and Other Financial Companies [Member] |  |  |
Disclosure of effective income tax rate [Line Items] |  |  |
Social contribution of tax rate |  |  | 20.00%

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