Document and Entity Information	12 Months Ended
Dec. 31, 2010
Entity Registrant Name	Itau Unibanco Holding S.A.
Entity Central Index Key	0001132597
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Trading Symbol	itub
Entity Common Stock, Shares Outstanding	2,289,284,273
Document Type	20-F
Amendment Flag	false
Document Period End Date	Dec. 31, 2010
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2010
Entity Current Reporting Status	Yes
Entity Well-known Seasoned Issuer	Yes

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The type of document being provided (such as 10-K, 10-Q, N-1A, etc). The document type is limited to the same value as the supporting SEC submission type, minus any "/A" suffix. The acceptable values are as follows: S-1, S-3, S-4, S-11, F-1, F-3, F-4, F-9, F-10, 6-K, 8-K, 10, 10-K, 10-Q, 20-F, 40-F, N-1A, 485BPOS, 497, NCSR, N-CSR, N-CSRS, N-Q, 10-KT, 10-QT, 20-FT, and Other.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Subsection 1

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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