XML 298 R246.htm IDEA: XBRL DOCUMENT v3.19.1

Subsequent Event - Additional Information (Detail) - Issued debt [Member] - ITAU UNIBANCO HOLDING [Member] R$ in Millions	1 Months Ended
	Jan. 31, 2019 BRL (R$)
Disclosure of non-adjusting events after reporting period [line items]
Issuance perpetual subordinated financial bill	R$ 3,050
Estimated impact of Tier I Capitalization ratio	0.4

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

+ References

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- Definition

The amount of subordinated liabilities that do not have a specified repayment date. [Refer: Subordinated liabilities]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 112
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_112_c&doctype=Standard
-URIDate 2017-03-09

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- Definition

Estimated impact of Tier I Capitalization ratio

+ References

No definition available.

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