XML 192 R124.htm IDEA: XBRL DOCUMENT v3.20.1

Lease - Leasee - Summary of Present Value Recognized in the Consolidated Balance Sheet is Presented - (Detail) R$ in Millions	Dec. 31, 2019 BRL (R$)
Statement [Line Items]
Total future minimum payments (Note 18b)	R$ 4,131
Non-current [member]
Statement [Line Items]
Total future minimum payments (Note 18b)	3,252
Non-current [member] | From 1 to 5 years [member]
Statement [Line Items]
Total future minimum payments (Note 18b)	2,498
Non-current [member] | Over 5 years [member]
Statement [Line Items]
Total future minimum payments (Note 18b)	754
Current [member]
Statement [Line Items]
Total future minimum payments (Note 18b)	879
Current [member] | Up to 1 year [member]
Statement [Line Items]
Total future minimum payments (Note 18b)	R$ 879

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- Definition

Future minimum payments payable under lease.

+ References

No definition available.

+ Details

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Namespace Prefix:	itub_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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- References

No definition available.

+ Details

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Namespace Prefix:	itub_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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- Details

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Namespace Prefix:
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Balance Type:
Period Type:

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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

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- Details

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Namespace Prefix:
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Balance Type:
Period Type:

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- Details

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X

- Details

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Namespace Prefix:
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