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v3.23.1

Stockholders' equity (Details) - BRL (R$) R$ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
IfrsStatementLineItems [Line Items] |  |  |
Shares of capital stock, beginning balance | 9,804,135,348 | 9,804,135,348 | 9,804,135,348
Beginning balance | R$ 90,729 | R$ 90,729 | R$ 97,148
Treasury shares, beginning balance | 24,244,725 | 41,678,452 |
Treasury shares, beginning balance | 3,268,688 | 24,244,725 | 41,678,452
Treasury shares, value | R$ (528) | R$ (907) |
Result of delivery of treasury shares | (20,976,037) |  |
Result of delivery of treasury shares | R$ 457 |  |
Treasury shares, ending balance | 3,268,688 | 24,244,725 | 41,678,452
Treasury shares, value | R$ (71) | R$ (528) | R$ (907)
Outstanding shares | 9,800,866,660 | 9,779,890,623 | 9,762,456,896
Result of delivery of treasury shares | R$ 521 | R$ 572 | R$ 567
Brazil [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Shares of capital stock, beginning balance | 6,557,365,425 | 6,701,805,828 | 6,749,983,938
Beginning balance | R$ 60,683 | R$ 62,020 | R$ 66,885
Foreign countries [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Shares of capital stock, beginning balance | 3,246,769,923 | 3,102,329,520 | 3,054,151,410
Beginning balance | R$ 30,046 | R$ 28,709 | R$ 30,263
Ordinary shares [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Shares of capital stock, beginning balance | 4,958,290,359 | 4,958,290,359 | 4,958,290,359
Outstanding shares | 4,958,290,359 | 4,958,290,359 | 4,958,290,359
Ordinary shares [member] | Brazil [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Shares of capital stock, beginning balance | 4,927,867,243 | 4,929,997,183 | 4,929,824,281
Ordinary shares [member] | Foreign countries [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Shares of capital stock, beginning balance | 30,423,116 | 28,293,176 | 28,466,078
Preference shares [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Shares of capital stock, beginning balance | 4,845,844,989 | 4,845,844,989 | 4,845,844,989
Treasury shares, beginning balance | 24,244,725 | 41,678,452 |
Treasury shares, beginning balance | 3,268,688 | 24,244,725 | 41,678,452
Result of delivery of treasury shares | (20,976,037) | (17,433,727) |
Treasury shares, ending balance | 3,268,688 | 24,244,725 | 41,678,452
Outstanding shares | 4,842,576,301 | 4,821,600,264 | 4,804,166,537
Result of delivery of treasury shares |  | R$ 379 |
Preference shares [member] | Brazil [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Shares of capital stock, beginning balance | 1,629,498,182 | 1,771,808,645 | 1,820,159,657
Preference shares [member] | Foreign countries [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Shares of capital stock, beginning balance | 3,216,346,807 | 3,074,036,344 | 3,025,685,332

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