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v3.23.1

Segment Informations (Details) - BRL (R$) R$ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
IfrsStatementLineItems [Line Items] |  |  |
Operating revenues | R$ 144,857 | R$ 126,374 | R$ 100,199
Interest margin | 87,211 | 75,209 | 50,053
Revenues from banking services and bank charges | 46,378 |  | 38,557
Income related to insurance and private pension operations before claim and selling expenses | 5,938 | 5,354 | 4,488
Other revenues | 5,330 | 3,487 | 7,101
Cost of Credit | (27,737) | (12,779) | (24,626)
Claims | (1,550) | (1,600) | (1,354)
Operating margin | 115,570 | 111,995 | 74,219
Other operating income (expenses) | (78,037) | (69,764) | (68,989)
Non-interest expenses | (69,164) | (62,549) | (64,207)
Tax expenses for ISS, PIS and COFINS and Other | (9,545) | (8,379) | (6,181)
Share of profit or (loss) in associates and joint ventures | 672 | 1,164 | 1,399
Income before income tax and social contribution | 37,533 | 42,231 | 5,230
Income tax and social contribution | (6,796) | (13,847) | 9,834
Non-controlling interest in subsidiaries | (1,035) | (1,624) | 3,832
Net income | 29,702 | 26,760 | 18,896
Net income |  |  |
Total liabilities | 2,146,097 | 1,904,730 | 1,864,726
Investments in associates and joint ventures | 7,443 | 6,121 | 15,570
Fixed assets, net | 7,767 | 6,963 | 6,937
Goodwill and Intangible assets, net | 23,114 | 21,110 | 17,330
Interest and similar income and expenses | 51,758 | 40,811 | 59,948
Net gains (loss) on investment securities and derivatives | 34,173 | 6,553 | 16,678
Results from foreign exchange operation | 1,280 | 2,689 | 1,417
Depreciation and amortization expenses | 5,750 | 5,064 | 5,548
Commissions and Banking Fees | 46,378 | 42,324 | 38,557
Retail Banking [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Operating revenues | 90,509 | 75,443 | 72,680
Interest margin | 54,881 | 43,042 | 41,818
Revenues from banking services and bank charges | 26,787 |  | 23,918
Income related to insurance and private pension operations before claim and selling expenses | 8,841 | 7,232 | 6,944
Cost of Credit | (29,908) | (18,278) | (21,247)
Claims | (1,538) | (1,591) | (1,345)
Operating margin | 59,063 | 55,574 | 50,088
Other operating income (expenses) | (43,512) | (40,116) | (40,221)
Non-interest expenses | (37,302) | (35,031) | (35,310)
Tax expenses for ISS, PIS and COFINS and Other | (6,210) | (5,085) | (4,911)
Income before income tax and social contribution | 15,551 | 15,458 | 9,867
Income tax and social contribution | (4,594) | (5,593) | (3,071)
Non-controlling interest in subsidiaries | 45 | (330) | (175)
Net income | 11,002 | 9,535 | 6,621
Total liabilities | 1,455,227 | 1,252,211 | 1,218,977
Investments in associates and joint ventures | 2,114 | 2,008 | 2,012
Fixed assets, net | 5,781 | 5,420 | 4,587
Goodwill and Intangible assets, net | 8,660 | 8,371 | 4,978
Commissions and Banking Fees |  | 25,169 |
Wholesale Banking [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Operating revenues | 49,229 | 38,228 | 32,187
Interest margin | 34,701 | 24,005 | 19,883
Revenues from banking services and bank charges | 14,143 |  | 11,911
Income related to insurance and private pension operations before claim and selling expenses | 385 | 406 | 393
Cost of Credit | (2,392) | (1,956) | (8,968)
Claims | (11) | (9) | (8)
Operating margin | 46,826 | 36,263 | 23,211
Other operating income (expenses) | (19,482) | (17,743) | (16,133)
Non-interest expenses | (17,019) | (15,699) | (14,592)
Tax expenses for ISS, PIS and COFINS and Other | (2,463) | (2,044) | (1,541)
Income before income tax and social contribution | 27,344 | 18,520 | 7,078
Income tax and social contribution | (9,076) | (6,799) | (1,893)
Non-controlling interest in subsidiaries | (825) | (591) | 601
Net income | 17,443 | 11,130 | 5,786
Total liabilities | 1,102,834 | 945,311 | 915,253
Fixed assets, net | 1,282 | 997 | 806
Goodwill and Intangible assets, net | 9,062 | 9,557 | 9,901
Commissions and Banking Fees |  | 13,817 |
Market And Corporation [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Operating revenues | 2,983 | 11,930 | 9,918
Interest margin | 2,979 | 11,099 | 8,394
Revenues from banking services and bank charges | 177 |  | 1,401
Income related to insurance and private pension operations before claim and selling expenses | (173) | (53) | 123
Cost of Credit |  |  | 6
Operating margin | 2,983 | 11,930 | 9,924
Other operating income (expenses) | (374) | (1,055) | (650)
Non-interest expenses | (312) | (478) | (287)
Tax expenses for ISS, PIS and COFINS and Other | (62) | (577) | (363)
Income before income tax and social contribution | 2,609 | 10,875 | 9,274
Income tax and social contribution | (14) | (3,997) | (3,099)
Non-controlling interest in subsidiaries | (254) | (664) | (46)
Net income | 2,341 | 6,214 | 6,129
Total liabilities | 144,379 | 105,190 | 108,432
Investments in associates and joint ventures | 4,798 | 4,338 | 13,879
Commissions and Banking Fees |  | 884 |
Ita Unibanco SA [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Operating revenues | 142,721 | 125,601 | 114,785
Interest margin | 92,561 | 78,146 | 70,095
Revenues from banking services and bank charges | 41,107 |  | 37,230
Income related to insurance and private pension operations before claim and selling expenses | 9,053 | 7,585 | 7,460
Cost of Credit | (32,300) | (20,234) | (30,209)
Claims | (1,549) | (1,600) | (1,353)
Operating margin | 108,872 | 103,767 | 83,223
Other operating income (expenses) | (63,368) | (58,914) | (57,004)
Non-interest expenses | (54,633) | (51,208) | (50,189)
Tax expenses for ISS, PIS and COFINS and Other | (8,735) | (7,706) | (6,815)
Income before income tax and social contribution | 45,504 | 44,853 | 26,219
Income tax and social contribution | (13,684) | (16,389) | (8,063)
Non-controlling interest in subsidiaries | (1,034) | (1,585) | 380
Net income | 30,786 | 26,879 | 18,536
Total liabilities | 2,300,224 | 2,010,442 | 1,964,880
Investments in associates and joint ventures | 6,912 | 6,346 | 15,891
Fixed assets, net | 7,063 | 6,417 | 5,393
Goodwill and Intangible assets, net | 17,722 | 17,928 | 14,879
Commissions and Banking Fees |  | 39,870 |
Adjustments [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Operating revenues | 2,136 | 773 | (14,586)
Interest margin | (5,350) | (2,937) | (20,042)
Revenues from banking services and bank charges | 5,271 |  | 1,327
Income related to insurance and private pension operations before claim and selling expenses | (3,115) | (2,231) | (2,972)
Other revenues | 5,330 | 3,487 | 7,101
Cost of Credit | 4,563 | 7,455 | 5,583
Claims | (1) |  | (1)
Operating margin | 6,698 | 8,228 | (9,004)
Other operating income (expenses) | (14,669) | (10,850) | (11,985)
Non-interest expenses | (14,531) | (11,341) | (14,018)
Tax expenses for ISS, PIS and COFINS and Other | (810) | (673) | 634
Share of profit or (loss) in associates and joint ventures | 672 | 1,164 | 1,399
Income before income tax and social contribution | (7,971) | (2,622) | (20,989)
Income tax and social contribution | 6,888 | 2,542 | 17,897
Non-controlling interest in subsidiaries | (1) | (39) | 3,452
Net income | (1,084) | (119) | 360
Total liabilities | (154,127) | (105,712) | (100,154)
Investments in associates and joint ventures | 531 | (225) | (321)
Fixed assets, net | 704 | 546 | 1,544
Goodwill and Intangible assets, net | R$ 5,392 | 3,182 | R$ 2,451
Commissions and Banking Fees |  | R$ 2,454 |

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- Definition Income from banking product. + References No definition available. + Details
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Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Increase (decrease) in insurance liabilities, Cost of Credit. + References No definition available. + Details
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Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Interest and similar income expense. + References No definition available. + Details
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Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- References No definition available. + Details
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Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Net gain loss on investment securities and derivatives. + References No definition available. + Details
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Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- References No definition available. + Details
Name: | itub_NetIncome
Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Net interest income. + References No definition available. + Details
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Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Non interest expense 1. + References No definition available. + Details
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Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
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Namespace Prefix: |
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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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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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Namespace Prefix: |
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Balance Type: |
Period Type: |