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Segment Information (Tables) | 12 Months Ended
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Dec. 31, 2018
Text block1 [abstract] |
Summary of Operating Segments | ITAÚ UNIBANCO HOLDING S.A. From January 1, December 31, 2018
|  | Retail Banking |  |  | Wholesale Banking |  |  | Activities with the Market + Corporation |  |  | ITAÚ UNIBANCO |  |  | Adjustments |  |  | IFRS consolidated (3) |
Banking product |  |  | 72,182 |  |  |  | 29,389 |  |  |  | 10,246 |  |  |  | 111,817 |  |  |  | (7,617 | ) |  |  | 104,200 |
Interest margin (1) |  |  | 40,243 |  |  |  | 18,930 |  |  |  | 9,912 |  |  |  | 69,085 |  |  |  | (8,380 | ) |  |  | 60,705 |
Banking service fees |  |  | 25,131 |  |  |  | 9,810 |  |  |  | 138 |  |  |  | 35,079 |  |  |  | 1,730 |  |  |  | 36,809 |
Income related to insurance and private pension operations before claim and selling expenses |  |  | 6,808 |  |  |  | 649 |  |  |  | 196 |  |  |  | 7,653 |  |  |  | (3,692 | ) |  |  | 3,961 |
Other income |  |  | 0 |  |  |  | 0 |  |  |  | 0 |  |  |  | 0 |  |  |  | 2,725 |  |  |  | 2,725 |
Cost of Credit |  |  | (12,526 | ) |  |  | (1,540 | ) |  |  | 0 |  |  |  | (14,066 | ) |  |  | 5,112 |  |  |  | (8,954 | )
Claims |  |  | (1,160 | ) |  |  | (68 | ) |  |  | 0 |  |  |  | (1,228 | ) |  |  | 0 |  |  |  | (1,228 | )
Operating margin |  |  | 58,496 |  |  |  | 27,781 |  |  |  | 10,246 |  |  |  | 96,523 |  |  |  | (2,505 | ) |  |  | 94,018 |
Other operating income (expenses) |  |  | (40,002 | ) |  |  | (15,217 | ) |  |  | (1,070 | ) |  |  | (56,289 | ) |  |  | (7,121 | ) |  |  | (63,410 | )
Non-interest expenses (2) |  |  | (35,296 | ) |  |  | (13,817 | ) |  |  | (331 | ) |  |  | (49,444 | ) |  |  | (8,094 | ) |  |  | (57,538 | )
Tax expenses for ISS, PIS and COFINS and Other |  |  | (4,706 | ) |  |  | (1,400 | ) |  |  | (739 | ) |  |  | (6,845 | ) |  |  | 226 |  |  |  | (6,619 | )
Share of profit or (loss) in associates and joint ventures |  |  | 0 |  |  |  | 0 |  |  |  | 0 |  |  |  | 0 |  |  |  | 747 |  |  |  | 747 |
Net income before income tax and social contribution |  |  | 18,494 |  |  |  | 12,564 |  |  |  | 9,176 |  |  |  | 40,234 |  |  |  | (9,626 | ) |  |  | 30,608 |
Income tax and social contribution |  |  | (6,939 | ) |  |  | (3,829 | ) |  |  | (2,964 | ) |  |  | (13,732 | ) |  |  | 8,763 |  |  |  | (4,969 | )
Non-controlling interest in subsidiaries |  |  | (184 | ) |  |  | (550 | ) |  |  | (35 | ) |  |  | (769 | ) |  |  | 37 |  |  |  | (732 | )
Net income |  |  | 11,371 |  |  |  | 8,185 |  |  |  | 6,177 |  |  |  | 25,733 |  |  |  | (826 | ) |  |  | 24,907 |
Total assets (*) - 12/31/2018 |  |  | 1,042,145 |  |  |  | 655,393 |  |  |  | 142,853 |  |  |  | 1,649,613 |  |  |  | (96,816 | ) |  |  | 1,552,797 |
Total liabilities - 12/31/2018 |  |  | 1,005,194 |  |  |  | 597,528 |  |  |  | 93,546 |  |  |  | 1,505,490 |  |  |  | (103,159 | ) |  |  | 1,402,331 |
(*) Includes: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in associates and joint ventures |  |  | 1,220 |  |  |  | 0 |  |  |  | 11,438 |  |  |  | 12,658 |  |  |  | (639 | ) |  |  | 12,019 |
Fixed assets, net |  |  | 5,526 |  |  |  | 879 |  |  |  | 0 |  |  |  | 6,405 |  |  |  | 897 |  |  |  | 7,302 |
Goodwill and Intangible assets, net |  |  | 6,845 |  |  |  | 8,178 |  |  |  | 0 |  |  |  | 15,023 |  |  |  | 4,306 |  |  |  | 19,329 |
(1) | Includes interest and similar income and expenses of R$ 62,565, net gains (loss) on investment securities and derivatives of R$ (4,834) and results from foreign exchange operations and exchange variation of transactions abroad of R$ 2,974.
(2) | Refers to general and administrative expenses including depreciation and amortization expenses of R$ (3,332).
(3) | The IFRS consolidated figures do not represent the sum of the segments because there are intercompany transactions that were eliminated only in the consolidated financial statements. Segments are assessed by top management, net of income and expenses between related parties.
ITAÚ UNIBANCO HOLDING S.A. From January 1 to December 31, 2017
|  | Retail Banking |  |  | Wholesale Banking |  |  | Actitivities with the Market + Corporation |  |  | ITAÚ UNIBANCO |  |  | Adjustments |  |  | IFRS consolidated (3) |
Banking product |  |  | 69,921 |  |  |  | 28,748 |  |  |  | 10,623 |  |  |  | 109,292 |  |  |  | 2,231 |  |  |  | 111,523 |
Interest margin (1) |  |  | 38,570 |  |  |  | 19,426 |  |  |  | 10,515 |  |  |  | 68,511 |  |  |  | 2,731 |  |  |  | 71,242 |
Banking service fees |  |  | 24,096 |  |  |  | 8,876 |  |  |  | 42 |  |  |  | 33,014 |  |  |  | 1,434 |  |  |  | 34,448 |
Income related to insurance and private pension operations before claim and selling expenses |  |  | 7,255 |  |  |  | 446 |  |  |  | 66 |  |  |  | 7,767 |  |  |  | (3,068 | ) |  |  | 4,699 |
Other income |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 1,134 |  |  |  | 1,134 |
Cost of Credit |  |  | (12,166 | ) |  |  | (5,829 | ) |  |  | (6 | ) |  |  | (18,001 | ) |  |  | (1,773 | ) |  |  | (19,774 | )
Claims |  |  | (1,222 | ) |  |  | (53 | ) |  |  | — |  |  |  | (1,275 | ) |  |  | 83 |  |  |  | (1,192 | )
Operating margin |  |  | 56,533 |  |  |  | 22,866 |  |  |  | 10,617 |  |  |  | 90,016 |  |  |  | 541 |  |  |  | 90,557 |
Other operating income (expenses) |  |  | (37,601 | ) |  |  | (14,523 | ) |  |  | (1,647 | ) |  |  | (53,771 | ) |  |  | (6,204 | ) |  |  | (59,975 | )
Non-interest expenses (2) |  |  | (33,186 | ) |  |  | (13,265 | ) |  |  | (831 | ) |  |  | (47,282 | ) |  |  | (6,212 | ) |  |  | (53,494 | )
Tax expenses for ISS, PIS and COFINS and Other |  |  | (4,415 | ) |  |  | (1,258 | ) |  |  | (816 | ) |  |  | (6,489 | ) |  |  | (542 | ) |  |  | (7,031 | )
Share of profit or (loss) in associates and joint ventures |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 550 |  |  |  | 550 |
Net income before income tax and social contribution |  |  | 18,932 |  |  |  | 8,343 |  |  |  | 8,970 |  |  |  | 36,245 |  |  |  | (5,663 | ) |  |  | 30,582 |
Income tax and social contribution |  |  | (7,107 | ) |  |  | (2,412 | ) |  |  | (1,775 | ) |  |  | (11,294 | ) |  |  | 3,937 |  |  |  | (7,357 | )
Non-controlling interest in subsidiaries |  |  | (166 | ) |  |  | 117 |  |  |  | (23 | ) |  |  | (72 | ) |  |  | 40 |  |  |  | (32 | )
Net income |  |  | 11,659 |  |  |  | 6,048 |  |  |  | 7,172 |  |  |  | 24,879 |  |  |  | (1,686 | ) |  |  | 23,193 |
Total assets (*) - 12/31/2017 |  |  | 970,137 |  |  |  | 604,384 |  |  |  | 119,309 |  |  |  | 1,503,503 |  |  |  | (67,264 | ) |  |  | 1,436,239 |
Total liabilities - 12/31/2017 |  |  | 934,835 |  |  |  | 548,185 |  |  |  | 71,873 |  |  |  | 1,364,566 |  |  |  | (72,683 | ) |  |  | 1,291,883 |
(*) Includes: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in associates and joint ventures |  |  | 1,168 |  |  |  | — |  |  |  | 3,986 |  |  |  | 5,154 |  |  |  | (99 | ) |  |  | 5,055 |
Fixed assets, net |  |  | 5,105 |  |  |  | 1,290 |  |  |  | — |  |  |  | 6,395 |  |  |  | 964 |  |  |  | 7,359 |
Goodwill and Intangible assets, net |  |  | 8,739 |  |  |  | 7,694 |  |  |  | — |  |  |  | 16,433 |  |  |  | 2,950 |  |  |  | 19,383 |
(1) | Includes interest and similar income and expenses of R$ 67,311, net gains (loss) on investment securities and derivatives of R$ 4,181 and results from foreign exchange operations and exchange variation of transactions abroad of R$ (250).
(2) | Refers to general and administrative expenses including depreciation and amortization expenses of R$ (3,034).
(3) | The IFRS Consolidated figures do not represent the sum of the segments because there are intercompany transactions that were eliminated only in the consolidated financial statements. Segments are assessed by top management, net of income and expenses between related parties.
ITAÚ UNIBANCO HOLDING S.A. From January 1 to December 31, 2016
|  | Retail Banking |  |  | Wholesale Banking |  |  | Actitivities with the Market + Corporation |  |  | ITAÚ UNIBANCO |  |  | Adjustments |  |  | IFRS consolidated (3) |
Banking product |  |  | 70,496 |  |  |  | 30,498 |  |  |  | 9,412 |  |  |  | 110,406 |  |  |  | 8,016 |  |  |  | 118,422 |
Interest margin (1) |  |  | 40,073 |  |  |  | 21,929 |  |  |  | 9,264 |  |  |  | 71,266 |  |  |  | 8,589 |  |  |  | 79,855 |
Banking service fees |  |  | 22,659 |  |  |  | 8,072 |  |  |  | 59 |  |  |  | 30,790 |  |  |  | 1,128 |  |  |  | 31,918 |
Income related to insurance and private pension operations before claim and selling expenses |  |  | 7,764 |  |  |  | 497 |  |  |  | 89 |  |  |  | 8,350 |  |  |  | (3,085 | ) |  |  | 5,265 |
Other income |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 1,384 |  |  |  | 1,384 |
Cost of Credit |  |  | (14,394 | ) |  |  | (10,586 | ) |  |  | 71 |  |  |  | (24,909 | ) |  |  | 2,039 |  |  |  | (22,870 | )
Claims |  |  | (1,426 | ) |  |  | (59 | ) |  |  | — |  |  |  | (1,485 | ) |  |  | — |  |  |  | (1,485 | )
Operating margin |  |  | 54,676 |  |  |  | 19,853 |  |  |  | 9,483 |  |  |  | 84,012 |  |  |  | 10,055 |  |  |  | 94,067 |
Other operating income (expenses) |  |  | (37,202 | ) |  |  | (13,410 | ) |  |  | (2,387 | ) |  |  | (52,999 | ) |  |  | (5,389 | ) |  |  | (58,388 | )
Non-interest expenses (2) |  |  | (32,883 | ) |  |  | (12,034 | ) |  |  | (1,616 | ) |  |  | (46,533 | ) |  |  | (4,372 | ) |  |  | (50,905 | )
Tax expenses for ISS, PIS and COFINS and Other |  |  | (4,319 | ) |  |  | (1,376 | ) |  |  | (771 | ) |  |  | (6,466 | ) |  |  | (1,545 | ) |  |  | (8,011 | )
Share of profit or (loss) in associates and joint ventures |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 528 |  |  |  | 528 |
Net income before income tax and social contribution |  |  | 17,474 |  |  |  | 6,443 |  |  |  | 7,096 |  |  |  | 31,013 |  |  |  | 4,666 |  |  |  | 35,679 |
Income tax and social contribution |  |  | (6,328 | ) |  |  | (1,081 | ) |  |  | (1,237 | ) |  |  | (8,646 | ) |  |  | (5,017 | ) |  |  | (13,663 | )
Non-controlling interest in subsidiaries |  |  | (223 | ) |  |  | 79 |  |  |  | (1 | ) |  |  | (145 | ) |  |  | (244 | ) |  |  | (389 | )
Net income |  |  | 10,923 |  |  |  | 5,441 |  |  |  | 5,858 |  |  |  | 22,222 |  |  |  | (595 | ) |  |  | 21,627 |
Total assets (*) - 01/01/2017 |  |  | 909,779 |  |  |  | 585,088 |  |  |  | 116,401 |  |  |  | 1,427,084 |  |  |  | (75,770 | ) |  |  | 1,351,314 |
Total liabilities - 01/01/2017 |  |  | 877,792 |  |  |  | 525,390 |  |  |  | 80,810 |  |  |  | 1,299,869 |  |  |  | (80,939 | ) |  |  | 1,218,930 |
(*) Includes: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in associates and joint ventures |  |  | 1,325 |  |  |  | — |  |  |  | 3,106 |  |  |  | 4,431 |  |  |  | 642 |  |  |  | 5,073 |
Fixed assets, net |  |  | 5,635 |  |  |  | 1,177 |  |  |  | — |  |  |  | 6,812 |  |  |  | 1,230 |  |  |  | 8,042 |
Goodwill and Intangible assets, net |  |  | 7,957 |  |  |  | 7,276 |  |  |  | — |  |  |  | 15,233 |  |  |  | 1,823 |  |  |  | 17,056 |
(1) | Includes net interest and similar income and expenses of R$ 67,276, net gain (loss) on investment securities and derivatives of R$ 7,066 and foreign exchange results and exchange variation on transactions of abroad R$ 5,513.
(2) | Refers to general and administrative expenses including depreciation and amortization expenses of R$ (2,995).
(3) | The IFRS Consolidated figures do not represent the sum of the segments because there are intercompany transactions that were eliminated only in the consolidated financial statements. Segments are assessed by top management, net of income and expenses between related parties.
Summary of Result of Non-Current Assets and Main Services and Products by Geographic Region |
c) | Result of Non-Current Assets and Main Services and Products by Geographic Region
|  | 12/31/2018 |  |  | 12/31/2017 |  |  | 1/1/2017 |
|  | Brazil |  |  | Abroad |  |  | Total |  |  | Brazil |  |  | Abroad |  |  | Total |  |  | Brazil |  |  | Abroad |  |  | Total |
Non-current assets |  |  | 22,991 |  |  |  | 3,640 |  |  |  | 26,631 |  |  |  | 23,411 |  |  |  | 3,331 |  |  |  | 26,742 |  |  |  | 22,974 |  |  |  | 2,124 |  |  |  | 25,098 |
|  | 01/01 to 12/31/2018 |  |  | 01/01 to 12/31/2017 |  |  | 01/01 to 12/31/2016 |
|  | Brazil |  |  | Abroad |  |  | Total |  |  | Brazil |  |  | Abroad |  |  | Total |  |  | Brazil |  |  | Abroad |  |  | Total |
Income related to financial operations (1) (2) |  |  | 108,362 |  |  |  | 22,955 |  |  |  | 131,317 |  |  |  | 131,689 |  |  |  | 17,883 |  |  |  | 149,572 |  |  |  | 155,030 |  |  |  | 19,954 |  |  |  | 174,984 |
Income related to insurance and private pension operations before claim and selling expenses |  |  | 3,812 |  |  |  | 149 |  |  |  | 3,961 |  |  |  | 4,551 |  |  |  | 148 |  |  |  | 4,699 |  |  |  | 5,133 |  |  |  | 132 |  |  |  | 5,265 |
Banking service fees |  |  | 33,211 |  |  |  | 3,598 |  |  |  | 36,809 |  |  |  | 31,296 |  |  |  | 3,152 |  |  |  | 34,448 |  |  |  | 29,061 |  |  |  | 2,857 |  |  |  | 31,918 |
(1) | Includes interest and similar income, dividend income, net gain (loss) on investment securities and derivatives, foreign exchange results, and exchange variation on transactions.
(2) | ITAÚ UNIBANCO HOLDING does not have clients representing 10% or higher of its revenues.

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