Business development	12 Months Ended
Dec. 31, 2021
Text Block [Abstract]
Business development	Note 3 – Business development Reduction of non-controlling interest in XP Inc. On November 26, 2020, ITAÚ UNIBANCO HOLDING disclosed that the Board of Directors approved the partial spin-off of the investment held in XP Inc. (XP INC) to a new company (XPart S.A.). On December 2 and 17, 2020, ITAÚ UNIBANCO HOLDING sold 4.44% and 0.07%, respectively, of its investments in XP INC, through the public offering on the Nasdaq, giving a result before taxes of R$ 3,996. Concurrently with the sales, XP INC completed a public offering (follow-on) which resulted in the dilution of the interest held by ITAÚ UNIBANCO HOLDING to 41.00% of capital, giving a result in XP INC primary subscription of R$ 545. Additionally, on May 14, 2021, ITAÚ UNIBANCO HOLDING sold 0.48% of its interest in XP INC, generating income before taxes of R$ 486. After a favorable opinion of the US Federal Reserve Board, XPart S.A. was constituted on May 31, 2021 by the portion of investment in XP INC plus a cash amount corresponding to R$ 10, as approved in the Extraordinary Stockholders’ Meeting held on January 31, 2021. The percentage of XP INC’s capital spun-off to XPart S.A. was 40.52%, which corresponded to XPart S.A. stockholders’ equity value of R$ 9,985 on the base date May 31, 2021. In General Meetings on October 1, 2021, the merger of XPart S.A. into XP INC. was approved. In view of the merger and subsequent extinction of XPart S.A. into XP INC, ITAÚ UNIBANCO HOLDING’s stockholders that hold an ownership interest in XPart S.A., received in replacement, an ownership interest of XP INC. After all the events described above, ITAÚ UNIBANCO HOLDING no longer holds an equity interest in XP INC. Itaú CorpBanca Itaú CorpBanca (ITAÚ CORPBANCA) is controlled as of April 1st, 2016 by ITAÚ UNIBANCO HOLDING. On the same date, ITAU UNIBANCO HOLDING entered into a shareholders’ agreement with Corp Group, which sets forth, among others, the right of ITAÚ UNIBANCO HOLDING and Corp Group to appoint members for the Board of Directors of ITAÚ CORPBANCA in accordance to their interests in capital stock, and this group of shareholders have the right to appoint the majority of members of the Board of Directors of ITAÚ CORPBANCA and ITAÚ UNIBANCO HOLDING are be entitled to appoint the majority of members elected by this block. On September 10, 2020, ITAÚ UNIBANCO HOLDING, through its subsidiary ITB Holding Brasil Participações Ltda, indirectly acquired additional ownership interest of 1.08% (5,558,780,153 shares) in the ITAÚ CORPBANCA’s capital for the amount of R$ 229, and now it holds 39.22%. The effective acquisition and financial settlement occurred on September 14, 2020, after obtaining the regulatory authorizations. At the Extraordinary Stockholders’ Meeting of Itaú CorpBanca held on July 13, 2021, the capital increase of Itaú CorpBanca in the total amount of CLP 830 billion was approved, through the issuance of 461,111,111,111 shares, which were fully subscribed, paid in and settled in October and November 2021, after regulatory approvals. ITAÚ UNIBANCO HOLDING subscribed the total of 350,048,242,004 shares for the amount of CLP 630 billion (approximately R$ 4,296), then holding 56.60% of the capital of ITAÚ CORPBANCA. Recovery do Brasil Consultoria S.A. On December 31, 2015, ITAÚ UNIBANCO HOLDING, through its subsidiary Itaú Unibanco S.A. (ITAÚ UNIBANCO), entered into an agreement for purchase and sale and other covenants with Banco BTG Pactual S.A. (BTG) and with Misben S.A. for acquisition of 89.08% of interest in capital of Recovery do Brasil Consultoria S.A. (RECOVERY), corresponding to total interest of RECOVERY’s parties, for the amount of R$ 735. On July 7, 2016 an additional interest of 6.92% was acquired from International Finance Corporation, for the amount of R$ 59, then holding 96% of its capital. On May 26, 2020, ITAÚ UNIBANCO HOLDING, through its subsidiary ITAÚ UNIBANCO, acquired from International Finance Corporation an additional interest of 4% for the amount of R$ 20.7, then holding 100% of capital of RECOVERY. The effective acquisition and financial settlement occurred on May 28, 2020. Acquisition of Zup I.T. Serviços em Tecnologia e Inovação S.A . On October 31, 2019, ITAÚ UNIBANCO HOLDING, through its subsidiary Redecard Instituição de Pagamento S.A. (REDE), entered into a purchase and sale agreement of 100% of the capital of Zup I.T. Serviços em Tecnologia e Inovação S.A. (ZUP). The purchase will be carried out in three phases over four years. In the first phase, ITAÚ UNIBANCO HOLDING acquired 52.96% of ZUP’s total voting capital for approximately R$ 293, then holding the company’s control. In the third year, after the operation is closed, ITAÚ UNIBANCO HOLDING will acquire an additional 19.6% interest; in the fourth year, the remaining interest, so as to achieve 100% of ZUP’s capital. Effective acquisitions and financial settlements occurred on March 31, 2020, after obtaining the regulatory authorizations required.

Note 3 – Business development

Reduction of non-controlling interest in XP Inc.

On November 26, 2020, ITAÚ UNIBANCO HOLDING disclosed that the Board of Directors approved the partial spin-off of the investment held in XP Inc. (XP INC) to a new company (XPart S.A.).

On December 2 and 17, 2020, ITAÚ UNIBANCO HOLDING sold 4.44% and 0.07%, respectively, of its investments in XP INC, through the public offering on the Nasdaq, giving a result before taxes of R$ 3,996. Concurrently with the sales, XP INC completed a public offering

(follow-on)

which resulted in the dilution of the interest held by ITAÚ UNIBANCO HOLDING to 41.00% of capital, giving a result in XP INC primary subscription of R$ 545.

Additionally, on May 14, 2021, ITAÚ UNIBANCO HOLDING sold 0.48% of its interest in XP INC, generating income before taxes of R$ 486.

After a favorable opinion of the US Federal Reserve Board, XPart S.A. was constituted on May 31, 2021 by the portion of investment in XP INC plus a cash amount corresponding to R$ 10, as approved in the Extraordinary Stockholders’ Meeting held on January 31, 2021. The percentage of XP INC’s capital

spun-off

to XPart S.A. was 40.52%, which corresponded to XPart S.A. stockholders’ equity value of R$ 9,985 on the base date May 31, 2021.

In General Meetings on October 1, 2021, the merger of XPart S.A. into XP INC. was approved.

In view of the merger and subsequent extinction of XPart S.A. into XP INC, ITAÚ UNIBANCO HOLDING’s stockholders that hold an ownership interest in XPart S.A., received in replacement, an ownership interest of XP INC.

After all the events described above, ITAÚ UNIBANCO HOLDING no longer holds an equity interest in XP INC.

Itaú CorpBanca

Itaú CorpBanca (ITAÚ CORPBANCA) is controlled as of April 1st, 2016 by ITAÚ UNIBANCO HOLDING. On the same date, ITAU UNIBANCO HOLDING entered into a shareholders’ agreement with Corp Group, which sets forth, among others, the right of ITAÚ UNIBANCO HOLDING and Corp Group to appoint members for the Board of Directors of ITAÚ CORPBANCA in accordance to their interests in capital stock, and this group of shareholders have the right to appoint the majority of members of the Board of Directors of ITAÚ CORPBANCA and ITAÚ UNIBANCO HOLDING are be entitled to appoint the majority of members elected by this block.

On September 10, 2020, ITAÚ UNIBANCO HOLDING, through its subsidiary ITB Holding Brasil Participações Ltda, indirectly acquired additional ownership interest of 1.08% (5,558,780,153 shares) in the ITAÚ CORPBANCA’s capital for the amount of R$ 229, and now it holds 39.22%.

The effective acquisition and financial settlement occurred on September 14, 2020, after obtaining the regulatory authorizations.

At the Extraordinary Stockholders’ Meeting of Itaú CorpBanca held on July 13, 2021, the capital increase of Itaú CorpBanca in the total amount of CLP 830 billion was approved, through the issuance of 461,111,111,111 shares, which were fully subscribed, paid in and settled in October and November 2021, after regulatory approvals. ITAÚ UNIBANCO HOLDING subscribed the total of 350,048,242,004 shares for the amount of CLP 630 billion (approximately R$ 4,296), then holding 56.60% of the capital of ITAÚ CORPBANCA.

Recovery do Brasil Consultoria S.A.

On December 31, 2015, ITAÚ UNIBANCO HOLDING, through its subsidiary Itaú Unibanco S.A. (ITAÚ UNIBANCO), entered into an agreement for purchase and sale and other covenants with Banco BTG Pactual S.A. (BTG) and with Misben S.A. for acquisition of 89.08% of interest in capital of Recovery do Brasil Consultoria S.A. (RECOVERY), corresponding to total interest of RECOVERY’s parties, for the amount of R$ 735. On July 7, 2016 an additional interest of 6.92% was acquired from International Finance Corporation, for the amount of R$ 59, then holding 96% of its capital.

On May 26, 2020, ITAÚ UNIBANCO HOLDING, through its subsidiary ITAÚ UNIBANCO, acquired from International Finance Corporation an additional interest of 4% for the amount of R$ 20.7, then holding 100% of capital of RECOVERY.

The effective acquisition and financial settlement occurred on May 28, 2020.

Acquisition of Zup I.T. Serviços em Tecnologia e Inovação S.A

On October 31, 2019, ITAÚ UNIBANCO HOLDING, through its subsidiary Redecard Instituição de Pagamento S.A. (REDE), entered into a purchase and sale agreement of 100% of the capital of Zup I.T. Serviços em Tecnologia e Inovação S.A. (ZUP). The purchase will be carried out in three phases over four years. In the first phase, ITAÚ UNIBANCO HOLDING acquired 52.96% of ZUP’s total voting capital for approximately R$ 293, then holding the company’s control. In the third year, after the operation is closed, ITAÚ UNIBANCO HOLDING will acquire an additional 19.6% interest; in the fourth year, the remaining interest, so as to achieve 100% of ZUP’s capital.

Effective acquisitions and financial settlements occurred on March 31, 2020, after obtaining the regulatory authorizations required.