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v3.22.1

Taxes - Summary of Deferred Tax Asset Balance and Respective Changes (Parenthetical) (Detail) - BRL (R$) R$ in Millions |  |  | 12 Months Ended |
--- | --- | --- | --- | ---
Mar. 01, 2019 | Feb. 28, 2019 | Dec. 31, 2021 | Dec. 31, 2019 | Dec. 31, 2020
Deferred tax assets [abstract] |  |  |  |  |
Deferred income tax and social contribution assets |  |  | R$ 50,831 |  | R$ 56,583
Deferred income tax and social contribution liabilities |  |  | R$ 280 |  | R$ 421
Increase decrease in deferred tax from increase decrease in social security tax rate |  |  |  | R$ 1,614 |
Social contribution of tax rate | 20.00% | 15.00% | 25.00% |  |

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- Definition Increase Decrease In Deferred Tax From Increase Decrease In Social Security Tax Rate. + References No definition available. + Details
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