Significant accounting policies (Tables)

12 Months Ended

Dec. 31, 2021

Text Block [Abstract]

Summary of Consolidated Companies

The following table shows the main consolidated companies, which together represent over 95% of total consolidated assets, as well as the interests of ITAÚ UNIBANCO HOLDING in their voting capital.

	Functional currency (1)		Incorporation country		Activity		Interest in voting capital %					Interest in total capital %
							12/31/2021		12/31/2020			12/31/2021			12/31/2020
In Brazil
Banco Itaú BBA S.A.		Real		Brazil		Financial institution		100.00%		100.00	%		100.00	%		100.00	%
Banco Itaú Consignado S.A.		Real		Brazil		Financial institution		100.00%		100.00	%		100.00	%		100.00	%
Banco Itaucard S.A.		Real		Brazil		Financial institution		100.00%		100.00	%		100.00	%		100.00	%
Banco Itauleasing S.A.		Real		Brazil		Financial institution		100.00%		100.00	%		100.00	%		100.00	%
Cia. Itaú de Capitalização		Real		Brazil		Premium Bonds		100.00%		100.00	%		100.00	%		100.00	%
Dibens Leasing S.A. - Arrendamento Mercantil		Real		Brazil		Leasing		100.00%		100.00	%		100.00	%		100.00	%
Financeira Itaú CBD S.A. Crédito, Financiamento e Investimento		Real		Brazil		Consumer finance credit		50.00%		50.00	%		50.00	%		50.00	%
Hipercard Banco Múltiplo S.A.		Real		Brazil		Financial institution		100.00%		100.00	%		100.00	%		100.00	%
Itauseg Seguradora S.A.		Real		Brazil		Insurance		100.00%		100.00	%		100.00	%		100.00	%
Itaú Corretora de Valores S.A.		Real		Brazil		Securities Broker		100.00%		100.00	%		100.00	%		100.00	%
Itaú Seguros S.A.		Real		Brazil		Insurance		100.00%		100.00	%		100.00	%		100.00	%
Itaú Unibanco S.A.		Real		Brazil		Financial institution		100.00%		100.00	%		100.00	%		100.00	%
Itaú Vida e Previdência S.A.		Real		Brazil		Pension plan		100.00%		100.00	%		100.00	%		100.00	%
Luizacred S.A. Sociedade de Crédito, Financiamento e Investimento		Real		Brazil		Consumer finance credit		50.00%		50.00	%		50.00	%		50.00	%
Redecard Instituição de Pagamento S.A. (2)		Real		Brazil		Acquirer		100.00%		100.00	%		100.00	%		100.00	%
Foreign
Itaú CorpBanca Colombia S.A.		Colombian peso		Colombia		Financial institution		49.30%		34.16	%		49.30	%		34.16	%
Banco Itaú (Suisse) S.A.		Swiss franc		Switzerland		Financial institution		100.00%		100.00	%		100.00	%		100.00	%
Banco Itaú Argentina S.A.		Argentinian peso		Argentina		Financial institution		100.00%		100.00	%		100.00	%		100.00	%
Banco Itaú Paraguay S.A.		Guarani		Paraguay		Financial institution		100.00%		100.00	%		100.00	%		100.00	%
Banco Itaú Uruguay S.A.		Uruguayan peso		Uruguay		Financial institution		100.00%		100.00	%		100.00	%		100.00	%
Itau Bank, Ltd.		Real		Cayman Islands		Financial institution		100.00%		100.00	%		100.00	%		100.00	%
Itau BBA International plc		US Dollar		United Kingdom		Financial institution		100.00%		100.00	%		100.00	%		100.00	%
Itau BBA USA Securities Inc.		Real		United States		Securities Broker		100.00%		100.00	%		100.00	%		100.00	%
Itaú CorpBanca (3)		Chilean peso		Chile		Financial institution		56.60%		39.22	%		56.60	%		39.22	%

(1) All overseas offices of ITAÚ UNIBANCO HOLDING have the same functional currency as the parent company, except for CorpBanca New York Branch, which uses the US dollar.

(2) New company name of Redecard S.A.

(3) ITAÚ UNIBANCO HOLDING controls ITAÚ CORPBANCA due to the shareholders’ agreement.