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Subsequent Events - Additional Information (Detail) - BRL (R$) R$ in Thousands | May 09, 2022 | May 06, 2022 | Apr. 29, 2022 | Dec. 31, 2021
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Subsequent events |  |  |  |
Amount of shares authorized |  |  |  | R$ 7,000,000
Second tranche |  |  |  |
Subsequent events |  |  |  |
Aggregate principal amount |  | R$ 1,100,000 |  |
Borrowings, interest rate basis |  | CDI plus <span style="border-left: none; border-right: none;">1.90</span>% |  |
Maturity |  | May 2032 |  |
Extraordinary Shareholders’ Meeting |  |  |  |
Subsequent events |  |  |  |
Approval amount of increase in share capital |  |  | R$ 2,036,691 |
Amount of shares authorized |  |  | R$ 9,000,000 |
Debentures issued |  |  |  |
Subsequent events |  |  |  |
Aggregate principal amount |  | R$ 1,500,000 |  |
Debentures issued | First tranche |  |  |  |
Subsequent events |  |  |  |
Aggregate principal amount |  | R$ 400,000 |  |
Borrowings, interest rate basis |  | CDI plus <span style="border-left: none; border-right: none;">1.50</span>% |  |
Maturity |  | May 2028 |  |
New share buyback program |  |  |  |
Subsequent events |  |  |  |
Number of shares buyback authorised | 110,000,000 |  |  |
Percentage of buyback shares represent total shares | 5.87% |  |  |
Maturity term of buyback shares | 18 months |  |  |

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