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Equity - Share buyback and treasury shares (Details) R$ in Millions, $ in Millions | 1 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2022 USD ($) | Jun. 30, 2022 BRL (R$) | Dec. 31, 2022 USD ($) shares | Dec. 31, 2021 USD ($) shares | Apr. 27, 2022 shares | Oct. 28, 2021 shares | Apr. 02, 2021 shares
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |  |  |  |
Number of shares repurchased | [1] |  |  | 178,627,077 |  |  |  |  |  |
Number of shares repurchased | [1] |  |  |  |  |  |  |  |  |
Purchase of treasury shares |  | $ 1,291 | R$ 6,520 | $ 2,785 | [1] |  | [1] |  |  |
Share buyback program number of shares authorized to be repurchased | [1] |  |  | 357,442,577 |  | 291,184,500 |  |  |  |
Share buyback program number of value authorized to be repurchased | $ | [1] |  |  | $ 6,036 |  | $ 5,546 |  |  |  |
Ordinary shares [member] | Treasury shares [member] |  |  |  |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |  |  |  |
Share buyback program, number of shares authorized to be repurchased |  |  |  |  |  |  |  | 500,000,000 |  | 270,000,000
Acquired Parent [Member] |  |  |  |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |  |  |  |
Number of shares repurchased | [2] |  |  | 81,855,600 |  |  |  |  |  |
Number of shares repurchased | [2] |  |  |  |  | 139,018,347 |  |  |  |
Purchase of treasury shares | $ | [2] |  |  | $ 1,501 |  | $ 3,008 |  |  |  |
Acquired By Wholly Owned Subsidiaries [Member] |  |  |  |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |  |  |  |
Number of shares repurchased | [2] |  |  | 96,959,900 |  |  |  |  |  |
Number of shares repurchased | [2] |  |  |  |  | 152,166,153 |  |  |  |
Purchase of treasury shares | $ | [2] |  |  | $ 1,750 |  | $ 2,538 |  |  |  |
Shares Buyback Program [Member] |  |  |  |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |  |  |  |
Number of shares repurchased | [2] |  |  | 178,815,500 |  |  |  |  |  |
Number of shares repurchased | [2] |  |  |  |  | 291,184,500 |  |  |  |
Purchase of treasury shares | $ | [2] |  |  |  |  | $ 5,546 |  |  |  |
Shares Buyback Program 1 [Member] |  |  |  |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |  |  |  |
Purchase of treasury shares | $ | [2] |  |  | $ 3,251 |  |  |  |  |  |
Acquired Parent 1 [Member] |  |  |  |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |  |  |  |
Number of shares repurchased | [1] |  |  | 87,779,900 |  |  |  |  |  |
Number of shares repurchased | [1] |  |  |  |  |  |  |  |  |
Purchase of treasury shares | $ | [1] |  |  | $ 1,375 |  |  |  |  |  |
Acquired By Wholly Owned Subsidiaries 1 [Member] |  |  |  |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |  |  |  |
Number of shares repurchased | [1] |  |  | 90,847,177 |  |  |  |  |  |
Number of shares repurchased | [1] |  |  |  |  |  |  |  |  |
Purchase of treasury shares | $ | [1] |  |  | $ 1,410 |  |  |  |  |  |
Wholly-owned subsidiaries | ADR [Member] |  |  |  |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |  |  |  |
Share buyback program, number of shares authorized to be repurchased |  |  |  |  |  |  |  |  | 200,000,000 |
[1] | On April 27, 2022, the Board of Directors approved the common shares buyback program, limited to a maximum of 500,000,000 common shares or their respective ADRs.
[2] | On April 1, 2021, the Board of Directors approved the common shares buyback program, limited to a maximum of 270,000,000 common shares or their respective ADRs. Continuing the previous program, the Board of Directors approved a new shares buyback program on October 28, 2021, with a limit of up to 200,000,000 common shares or their respective ADRs. Both programs were concluded in 2022.

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