XML 106 R54.htm IDEA: XBRL DOCUMENT
v3.19.1

Deposits (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2018
Text block1 [abstract] |
Summary of Breakdown of Deposits |
|  | 12/31/2018 |  |  | 12/31/2017 |
|  | Current |  |  | Non-current |  |  | Total |  |  | Current |  |  | Non-current |  |  | Total |
Interest-bearing deposits |  |  | 235,248 |  |  |  | 155,592 |  |  |  | 390,840 |  |  |  | 204,363 |  |  |  | 129,599 |  |  |  | 333,962 |
Time deposits |  |  | 95,914 |  |  |  | 155,386 |  |  |  | 251,300 |  |  |  | 82,718 |  |  |  | 129,082 |  |  |  | 211,800 |
Interbank |  |  | 2,469 |  |  |  | 206 |  |  |  | 2,675 |  |  |  | 1,665 |  |  |  | 517 |  |  |  | 2,182 |
Savings accounts |  |  | 136,865 |  |  |  | 0 |  |  |  | 136,865 |  |  |  | 119,980 |  |  |  | — |  |  |  | 119,980 |
Non-interest bearing deposits |  |  | 72,584 |  |  |  | 0 |  |  |  | 72,584 |  |  |  | 68,976 |  |  |  | — |  |  |  | 68,976 |
Demand deposits |  |  | 72,581 |  |  |  | 0 |  |  |  | 72,581 |  |  |  | 68,973 |  |  |  | — |  |  |  | 68,973 |
Others Deposits |  |  | 3 |  |  |  | 0 |  |  |  | 3 |  |  |  | 3 |  |  |  | — |  |  |  | 3 |
Total |  |  | 307,832 |  |  |  | 155,592 |  |  |  | 463,424 |  |  |  | 273,339 |  |  |  | 129,599 |  |  |  | 402,938 |

X
- Definition Disclosure of detailed information about deposits from customers. + References No definition available. + Details
Name: | itub_DisclosureOfDetailedInformationAboutDepositsFromCustomersExplanatory
Namespace Prefix: | itub_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Text block1 [abstract] + References No definition available. + Details
Name: | itub_TextBlock1Abstract
Namespace Prefix: | itub_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration