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v3.19.1

Stockholders' equity (Tables) | 12 Months Ended
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Dec. 31, 2018
Text block1 [abstract] |
Summary of Change in Shares of Paid-in Capital in the Beginnining and End of the Period | The breakdown and change in shares of paid-in capital in the beginning and end of the period are shown below:
|  | 12/31/2018 |
|  | Number |  |  | Amount |
|  | Common |  |  | Preferred |  |  | Total |
Residents in Brazil at 12/31/2017 |  |  | 3,299,073,506 |  |  |  | 1,116,291,341 |  |  |  | 4,415,364,847 |  |  |  | 65,482 |
Residents abroad at 12/31/2017 |  |  | 20,877,606 |  |  |  | 2,114,271,985 |  |  |  | 2,135,149,591 |  |  |  | 31,666 |
Shares of capital stock at 12/31/2017 |  |  | 3,319,951,112 |  |  |  | 3,230,563,326 |  |  |  | 6,550,514,438 |  |  |  | 97,148 |
Stock Split – ESM of 07/27/2018 – Approved on 10/31/2018 |  |  | 1,652,763,453 |  |  |  | 1,615,281,663 |  |  |  | 3,268,045,116 |  |  |  | 0 |
(-) Cancellation of Shares – Meeting of the Board of Directors 02/22/2018 |  |  | (14,424,206 | ) |  |  | 0 |  |  |  | (14,424,206 | ) |  |  | 0 |
Shares of capital stock at 12/31/2018 |  |  | 4,958,290,359 |  |  |  | 4,845,844,989 |  |  |  | 9,804,135,348 |  |  |  | 97,148 |
Residents in Brazil at 12/31/2018 |  |  | 4,928,076,320 |  |  |  | 1,609,055,166 |  |  |  | 6,537,131,486 |  |  |  | 64,776 |
Residents abroad at 12/31/2018 |  |  | 30,214,039 |  |  |  | 3,236,789,823 |  |  |  | 3,267,003,862 |  |  |  | 32,372 |
Treasury shares at 12/31/2017(1) |  |  | 14,424,206 |  |  |  | 71,459,714 |  |  |  | 85,883,920 |  |  |  | (2,743 | )
Purchase of shares |  |  | 0 |  |  |  | 13,100,000 |  |  |  | 13,100,000 |  |  |  | (510 | )
(-) Cancellation of Shares – Meeting of the Board of Directors 02/22/2018 |  |  | (14,424,206 | ) |  |  | 0 |  |  |  | (14,424,206 | ) |  |  | 534 |
Result of delivery of treasury shares |  |  | 0 |  |  |  | (29,623,265 | ) |  |  | (29,623,265 | ) |  |  | 899 |
Stock Split – ESM of 07/27/2018 – Approved on 10/31/2018 |  |  | 0 |  |  |  | 28,677,977 |  |  |  | 28,677,977 |  |  |  | 0 |
Treasury shares at 12/31/2018 (1) |  |  | 0 |  |  |  | 83,614,426 |  |  |  | 83,614,426 |  |  |  | (1,820 | )
Outstanding shares at 12/31/2018 |  |  | 4,958,290,359 |  |  |  | 4,762,230,563 |  |  |  | 9,720,520,922 |  |  |  |  |
Outstanding shares at 12/31/2017(2) |  |  | 4,958,290,359 |  |  |  | 4,738,655,417 |  |  |  | 9,696,945,776 |  |  |  |  |
|  | 12/31/2017 |
|  | Number |  |  | Amount |
|  | Common |  |  | Preferred |  |  | Total |
Residents in Brazil at 12/31/2016 |  |  | 5,003,025,466 |  |  |  | 1,657,445,596 |  |  |  | 6,660,471,062 |  |  |  | 65,534 |
Residents abroad at 12/31/2016 |  |  | 24,590,859 |  |  |  | 3,188,399,392 |  |  |  | 3,212,990,251 |  |  |  | 31,614 |
Shares of capital stock at 12/31/2016 |  |  | 5,027,616,325 |  |  |  | 4,845,844,988 |  |  |  | 9,873,461,313 |  |  |  | 97,148 |
(-) Cancellation of shares – Meeting of the Board of Directors 12/15/2017 |  |  | (47,689,657 | ) |  |  | — |  |  |  | (47,689,657 | ) |  |  | — |
Shares of capital stock at 12/31/2017 |  |  | 4,979,926,668 |  |  |  | 4,845,844,988 |  |  |  | 9,825,771,656 |  |  |  | 97,148 |
Residents in Brazil at 12/31/2017 |  |  | 4,948,610,259 |  |  |  | 1,674,437,011 |  |  |  | 6,623,047,270 |  |  |  | 65,482 |
Residents abroad at 12/31/2017 |  |  | 31,316,409 |  |  |  | 3,171,407,977 |  |  |  | 3,202,724,386 |  |  |  | 31,666 |
Treasury shares at 12/31/2016 (1) |  |  | 4,611 |  |  |  | 104,406,693 |  |  |  | 104,411,304 |  |  |  | (1,882 | )
Purchase of shares |  |  | 69,321,355 |  |  |  | 56,974,350 |  |  |  | 126,295,705 |  |  |  | (3,089 | )
(-) Cancellation of shares – Meeting of the Board of Directors 12/15/2017 |  |  | (47,689,657 | ) |  |  | — |  |  |  | (47,689,657 | ) |  |  | 1,178 |
Result of delivery of treasury shares |  |  | — |  |  |  | (54,191,472 | ) |  |  | (54,191,472 | ) |  |  | 1,050 |
Treasury shares at 12/31/2017(1) |  |  | 21,636,309 |  |  |  | 107,189,571 |  |  |  | 128,825,880 |  |  |  | (2,743 | )
Outstanding shares at 12/31/2017 (2) |  |  | 4,958,290,359 |  |  |  | 4,738,655,417 |  |  |  | 9,696,945,776 |  |  |  |  |
Outstanding shares at 12/31/2016 (2) |  |  | 5,027,611,714 |  |  |  | 4,741,438,296 |  |  |  | 9,769,050,010 |  |  |  |  |
(1) | Own shares, purchased based on authorization of the Board of Directors, to be held in Treasury for subsequent cancellation of replacement in the market.
(2) | For better comparability, outstanding shares in the period of 12/31/2017 and 12/31/2016 were adjusted by the split approved on 10/31/2018.
Summary of Cost of Shares Purchased and Average Cost of Treasury Shares and Market Price | Cost of shares purchased in the period, as well the average cost of treasury shares and their market price (in Brazilian Reais per share):
Cost / market value |  | 01/01 to 12/31/2018 |
| Common |  |  | Preferred |
Minimum |  |  | 0 |  |  |  | 37.45 |
Weighted average |  |  | 0 |  |  |  | 38.95 |
Maximum |  |  | 0 |  |  |  | 40.06 |
Treasury shares |  |  |  |  |  |  |  |
Average cost |  |  | 0 |  |  |  | 21.76 |
Market value at 12/31/2018 |  |  | 30.05 |  |  |  | 35.50 |
Cost / market value (*) |  | 01/01 to 12/31/2017 |
| Common |  |  | Preferred |
Minimum |  |  | 24.70 |  |  |  | 22.32 |
Weighted average |  |  | 24.70 |  |  |  | 24.16 |
Maximum |  |  | 24.70 |  |  |  | 25.70 |
Treasury shares (*) |  |  |  |  |  |  |  |
Average cost |  |  | 24.70 |  |  |  | 20.60 |
Market value at 12/31/2017 |  |  | 25.12 |  |  |  | 28.38 |
(*) | For better comparability, information of the period 12/31/2017 was adjusted by the split approved on 10/31/2018.
Summary of Calculation of Dividends and Interest on Capital |
l - | Calculation of dividends and interest on capital
|  | 12/31/2018 |  |  | 12/31/2017 |  |  | 12/31/2016 |
Statutory net income |  |  | 21,945 |  |  |  | 21,108 |  |  |  | 18,853 |
Adjustments: |  |  |  |  |  |  |  |  |  |  |  |
(-) Legal reserve - 5% |  |  | (1,097 | ) |  |  | (1,055 | ) |  |  | (943 | )
Dividend calculation basis |  |  | 20,848 |  |  |  | 20,053 |  |  |  | 17,910 |
Mandatory minimum dividend - 25% |  |  | 5,212 |  |  |  | 5,013 |  |  |  | 4,478 |
Dividends and Interest on Capital Paid / Provided for / Identified (*) |  |  | 22,437 |  |  |  | 17,558 |  |  |  | 10,000 |
(*) | On December 31, 2018, it includes extraordinary dividends, with balances of the Statutory Reserve.
Schedule of Stockholders' Compensation |
ll - | Stockholders’ compensation
|  | 12/31/2018 |
|  | Gross value per share (R$) |  |  | Gross |  |  | WHT |  |  | Net |
Paid / prepaid |  |  |  |  |  |  | 5,921 |  |  |  | (122 | ) |  |  | 5,799 |
Dividends - 11 monthly installments from February to December 2018 |  |  | 0,0150 |  |  |  | 1,069 |  |  |  | 0 |  |  |  | 1,069 |
Dividends - paid on 08/30/2018 |  |  | 0,6240 |  |  |  | 4,041 |  |  |  | 0 |  |  |  | 4,041 |
Interest on capital - paid on 08/30/2018 |  |  | 0,1252 |  |  |  | 811 |  |  |  | (122 | ) |  |  | 689 |
Provided for (Recorded in Other Liabilities) |  |  |  |  |  |  | 248 |  |  |  | (15 | ) |  |  | 233 |
Dividends - 1 monthly installment paid on 01/02/2019 |  |  | 0,0150 |  |  |  | 145 |  |  |  | 0 |  |  |  | 145 |
Interest on capital - credited on 12/27/2018 to be paid until 04/30/2019 |  |  | 0.0106 |  |  |  | 103 |  |  |  | (15 | ) |  |  | 88 |
Identified in Revenue Reserve In Stockholders’ Equity |  |  | 1.8001 |  |  |  | 17,498 |  |  |  | (1,093 | ) |  |  | 16,405 |
Total from 01/01 to 12/31/2018 |  |  |  |  |  |  | 23,667 |  |  |  | (1,230 | ) |  |  | 22,437 |
|  | 12/31/2017 |
|  | Gross value per share (R$) |  |  | Gross |  |  | WHT |  |  | Net |
Paid / prepaid |  |  |  |  |  |  | 3,666 |  |  |  | (389 | ) |  |  | 3,277 |
Dividends - 11 monthly installments from February to December 2017 |  |  | 0,0150 |  |  |  | 1,074 |  |  |  | — |  |  |  | 1,074 |
Interest on capital - paid on 08/25/2017 |  |  | 0,3990 |  |  |  | 2,592 |  |  |  | (389 | ) |  |  | 2,203 |
Provided for (Recorded in Other Liabilities) |  |  |  |  |  |  | 1,877 |  |  |  | (140 | ) |  |  | 1,737 |
Dividends - 1 monthly installment paid on 01/02/2018 |  |  | 0,0150 |  |  |  | 98 |  |  |  | — |  |  |  | 98 |
Dividends provision |  |  | 0.1304 |  |  |  | 843 |  |  |  | — |  |  |  | 843 |
Interest on capital, credited on 12/28/2017 to be paid until 04/30/2018 |  |  | 0.1445 |  |  |  | 936 |  |  |  | (140 | ) |  |  | 796 |
Identified in Revenue Reserve In Stockholders’ Equity |  |  | 2.1126 |  |  |  | 13,658 |  |  |  | (1,114 | ) |  |  | 12,544 |
Total from 01/01 to 12/31/2017 |  |  |  |  |  |  | 19,201 |  |  |  | (1,643 | ) |  |  | 17,558 |
|  | 12/31/2016 |
|  | Gross value per share (R$) |  |  | Gross |  |  | WHT |  |  | Net |
Paid / prepaid |  |  |  |  |  |  | 3,355 |  |  |  | (355 | ) |  |  | 3,000 |
Dividends - 11 monthly installments paid from February to December 2016 |  |  | 0,0150 |  |  |  | 987 |  |  |  | — |  |  |  | 987 |
Interest on capital - paid on 08/25/2016 |  |  | 0,3990 |  |  |  | 2,368 |  |  |  | (355 | ) |  |  | 2,013 |
Provided for (Recorded in Other Liabilities) |  |  |  |  |  |  | 3,169 |  |  |  | (461 | ) |  |  | 2,708 |
Dividends - 1 monthly installment paid on 01/02/2017 |  |  | 0,0150 |  |  |  | 98 |  |  |  | — |  |  |  | 98 |
Interest on capital - credited on 12/30/2016 paid on 04/28/2017 |  |  | 0.4714 |  |  |  | 3,071 |  |  |  | (461 | ) |  |  | 2,610 |
Identified in Revenue Reserve In Stockholders’ Equity |  |  | 0.7754 |  |  |  | 5,050 |  |  |  | (758 | ) |  |  | 4,292 |
Total from 01/01 to 12/31/2016 |  |  |  |  |  |  | 11,574 |  |  |  | (1,574 | ) |  |  | 10,000 |
Summary of Appropriated Reserves |
ll - | Appropriated reserves
|  | 12/31/2018 |  |  | 12/31/2017 |  |  | 12/31/2016 |
Capital reserves |  |  | 285 |  |  |  | 285 |  |  |  | 285 |
Premium on subscription of shares |  |  | 284 |  |  |  | 284 |  |  |  | 284 |
Reserves from tax incentives, restatement of equity securities and other |  |  | 1 |  |  |  | 1 |  |  |  | 1 |
Revenue reserves |  |  | 13,195 |  |  |  | 12,214 |  |  |  | 3,158 |
Legal (1) |  |  | 9,989 |  |  |  | 8,892 |  |  |  | 7,838 |
Statutory (2) |  |  | (2,775 | ) |  |  | 589 |  |  |  | 1,132 |
Corporate reorganizations (Note 2.4 a IV) |  |  | (11,517 | ) |  |  | (10,925 | ) |  |  | (10,862 | )
Special revenue reserves (3) |  |  | 17,498 |  |  |  | 13,658 |  |  |  | 5,050 |
Total reserves at parent company |  |  | 13,480 |  |  |  | 12,499 |  |  |  | 3,443 |
(1) | It purpose is to ensure the integrity of capital, compensate loss or increase capital.
(2) | Its main purpose is to ensure the remuneration flow to shareholders.
(3) | Refers to Dividends or Interest on Capital declared until 12/31/2018, 12/31/2017 and 12/31/2016.
Summary of Non-controlling Interests |
d) | Non-controlling interests
|  | Stockholders’ equity |  |  | Net Income |
|  | 12/31/2018 |  |  | 12/31/2017 |  |  | 01/01 to 12/31/2018 |  |  | 01/01 to 12/31/2017 |
Itaú CorpBanca (Note 3) |  |  | 11,645 |  |  |  | 11,144 |  |  |  | 539 |  |  |  | (38 | )
Itaú CorpBanca Colômbia S.A. (Note 3) |  |  | 1,268 |  |  |  | 1,203 |  |  |  | (2 | ) |  |  | (50 | )
Financeira Itaú CBD S.A. Crédito, Financiamento e Investimento |  |  | 364 |  |  |  | 297 |  |  |  | 105 |  |  |  | 70 |
Luizacred S.A. Soc. Cred. Financiamento Investimento |  |  | 288 |  |  |  | 241 |  |  |  | 44 |  |  |  | 24 |
Other |  |  | 119 |  |  |  | 93 |  |  |  | 46 |  |  |  | 26 |
Total |  |  | 13,684 |  |  |  | 12,978 |  |  |  | 732 |  |  |  | 32 |

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