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v3.19.1

Deposits - Summary of Breakdown of Deposits (Detail) - BRL (R$) R$ in Millions | Dec. 31, 2018 | Dec. 31, 2017 | Jan. 01, 2017
--- | --- | --- | ---
Disclosure of deposits [Line Items] |  |  |
Current | R$ 307,832 | R$ 273,339 |
Non-current | 155,592 | 129,599 |
Total | 463,424 | 402,938 | R$ 329,414
Interest-bearing deposits [Member] |  |  |
Disclosure of deposits [Line Items] |  |  |
Current | 235,248 | 204,363 |
Non-current | 155,592 | 129,599 |
Total | 390,840 | 333,962 |
Time deposits [Member] |  |  |
Disclosure of deposits [Line Items] |  |  |
Current | 95,914 | 82,718 |
Non-current | 155,386 | 129,082 |
Total | 251,300 | 211,800 |
Interbank [member] |  |  |
Disclosure of deposits [Line Items] |  |  |
Current | 2,469 | 1,665 |
Non-current | 206 | 517 |
Total | 2,675 | 2,182 |
Savings accounts [member] |  |  |
Disclosure of deposits [Line Items] |  |  |
Current | 136,865 | 119,980 |
Total | 136,865 | 119,980 |
Non-interest bearing deposits [Member] |  |  |
Disclosure of deposits [Line Items] |  |  |
Current | 72,584 | 68,976 |
Total | 72,584 | 68,976 |
Demand deposits [Member] |  |  |
Disclosure of deposits [Line Items] |  |  |
Current | 72,581 | 68,973 |
Total | 72,581 | 68,973 |
Other [Member] |  |  |
Disclosure of deposits [Line Items] |  |  |
Current | 3 | 3 |
Total | R$ 3 | R$ 3 |

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- Definition The amount of deposit liabilities from customers held by the entity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_55&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The amount of non-current deposits from customers. [Refer: Deposits from customers] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_55&doctype=Standard -URIDate 2017-03-09 + Details
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