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Earnings per share (Tables) | 12 Months Ended
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Dec. 31, 2021
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Summary of Earnings Per Share | Net income attributable to ITAÚ UNIBANCO HOLDING’s shareholders is divided by the average number of outstanding shares in the period, excluding treasury shares.
|  | 01/01 to 12/31/2021 |  |  | 01/01 to 12/31/2020 |  |  | 01/01 to 12/31/2019 |
Net income attributable to owners of the parent company |  |  | 26,760 |  |  |  | 18,896 |  |  |  | 27,113 |
Minimum non-cumulative dividends on preferred shares |  |  | (106 | ) |  |  | (106 | ) |  |  | (105 | )
Retained earnings to be distributed to common equity owners in an amount per share equal to the minimum dividend payable to preferred equity owners |  |  | (109 | ) |  |  | (109 | ) |  |  | (109 | )
Retained earnings to be distributed, on a pro rata basis, to common and preferred equity owners: |  |  |  |  |  |  |  |  |  |  |  |
Common |  |  | 13,462 |  |  |  | 9,491 |  |  |  | 13,693 |
Preferred |  |  | 13,083 |  |  |  | 9,190 |  |  |  | 13,206 |
Total net income available to equity owners: |  |  |  |  |  |  |  |  |  |  |  |
Common |  |  | 13,571 |  |  |  | 9,600 |  |  |  | 13,802 |
Preferred |  |  | 13,189 |  |  |  | 9,296 |  |  |  | 13,311 |
Weighted average number of outstanding shares |  |  |  |  |  |  |  |  |  |  |  |
Common |  |  | 4,958,290,359 |  |  |  | 4,958,290,359 |  |  |  | 4,958,290,359 |
Preferred |  |  | 4,818,741,579 |  |  |  | 4,801,324,161 |  |  |  | 4,781,855,588 |
Basic earnings per share – R$ |  |  |  |  |  |  |  |  |  |  |  |
Common |  |  | 2.74 |  |  |  | 1.94 |  |  |  | 2.78 |
Preferred |  |  | 2.74 |  |  |  | 1.94 |  |  |  | 2.78 |
b) Diluted earnings per share Calculated similarly to the basic earnings per share; however, it includes the conversion of all preferred shares potentially dilutable in the denominator.
|  | 01/01 to 12/31/2021 |  |  | 01/01 to 12/31/2020 |  |  | 01/01 to 12/31/2019 |
Net income available to preferred equity owners |  |  | 13,189 |  |  |  | 9,296 |  |  |  | 13,311 |
Dividends on preferred shares after dilution effects |  |  | 75 |  |  |  | 41 |  |  |  | 64 |
Net income available to preferred equity owners considering preferred shares after the dilution effect |  |  | 13,264 |  |  |  | 9,337 |  |  |  | 13,375 |
Net income available to ordinary equity owners |  |  | 13,571 |  |  |  | 9,600 |  |  |  | 13,802 |
Dividend on preferred shares after dilution effects |  |  | (75 | ) |  |  | (41 | ) |  |  | (64 | )
Net income available to ordinary equity owners considering preferred shares after the dilution effect |  |  | 13,496 |  |  |  | 9,559 |  |  |  | 13,738 |
Adjusted weighted average of shares |  |  |  |  |  |  |  |  |  |  |  |
Common |  |  | 4,958,290,359 |  |  |  | 4,958,290,359 |  |  |  | 4,958,290,359 |
Preferred |  |  | 4,873,042,114 |  |  |  | 4,843,233,835 |  |  |  | 4,826,925,107 |
Preferred |  |  | 4,818,741,579 |  |  |  | 4,801,324,161 |  |  |  | 4,781,855,588 |
Incremental as per share-based payment plans |  |  | 54,300,535 |  |  |  | 41,909,674 |  |  |  | 45,069,519 |
Diluted earnings per share – R$ |  |  |  |  |  |  |  |  |  |  |  |
Common |  |  | 2.72 |  |  |  | 1.93 |  |  |  | 2.77 |
Preferred |  |  | 2.72 |  |  |  | 1.93 |  |  |  | 2.77 |

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