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Risk and Capital Management - Maximum Exposure of Other Financial Assets by Type and Classification of Credit Risk (Detail) - BRL (R$) | Dec. 31, 2018 | Dec. 31, 2017
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Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | R$ 752,920,000,000 | R$ 705,674,000,000
Estimated fair value [Member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 419,252,000,000 | 409,084,000,000
Estimated fair value [Member] | Other [Member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 5,000,000 |
Estimated fair value [Member] | Investment funds [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 4,326,000,000 | 3,513,000,000
Estimated fair value [Member] | Brazilian government securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 327,720,000,000 | 326,227,000,000
Estimated fair value [Member] | Other Shareholders [Member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets |  | 297,325,000,000
Estimated fair value [Member] | Government securities - abroad [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 27,548,000,000 | 28,902,000,000
Estimated fair value [Member] | Government securities - abroad [member] | Argentina [Member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 1,129,000,000 | 1,466,000,000
Estimated fair value [Member] | Government securities - abroad [member] | United States [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 2,754,000,000 | 1,666,000,000
Estimated fair value [Member] | Government securities - abroad [member] | Mexico [Member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 2,378,000,000 | 564,000,000
Estimated fair value [Member] | Government securities - abroad [member] | Denmark [Member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets |  | 1,951,000,000
Estimated fair value [Member] | Government securities - abroad [member] | Spain [Member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 2,411,000,000 | 2,937,000,000
Estimated fair value [Member] | Government securities - abroad [member] | Korea [Member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 1,385,000,000 | 1,944,000,000
Estimated fair value [Member] | Government securities - abroad [member] | Chile [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 8,211,000,000 | 9,761,000,000
Estimated fair value [Member] | Government securities - abroad [member] | Paraguay [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 1,530,000,000 | 1,807,000,000
Estimated fair value [Member] | Government securities - abroad [member] | Uruguay [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 652,000,000 | 828,000,000
Estimated fair value [Member] | Government securities - abroad [member] | Colombia [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 6,065,000,000 | 5,945,000,000
Estimated fair value [Member] | Government securities - abroad [member] | Other [Member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets |  | 33,000,000
Estimated fair value [Member] | Government securities - abroad [member] | ITALY |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 115,000,000 |
Estimated fair value [Member] | Government securities - abroad [member] | France [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 891,000,000 |
Estimated fair value [Member] | Government securities - abroad [member] | Germany [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 22,000,000 |
Estimated fair value [Member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 87,206,000,000 | 79,344,000,000
Estimated fair value [Member] | Brazilian external debt bonds [Member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 300,172,000,000 |
Rural product note [Member] | Estimated fair value [Member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 4,003,000,000 | 2,739,000,000
Securitized real estate loans [Member] | Estimated fair value [Member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 10,926,000,000 | 13,577,000,000
Bank deposit certificates [member] | Estimated fair value [Member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 2,145,000,000 | 1,150,000,000
Debentures [member] | Estimated fair value [Member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 30,950,000,000 | 23,758,000,000
Eurobonds and others [member] | Estimated fair value [Member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 6,895,000,000 | 6,192,000,000
Financial bills [Member] | Estimated fair value [Member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 19,724,000,000 | 21,230,000,000
Promissory notes [Member] | Estimated fair value [Member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 1,490,000,000 | 3,614,000,000
Other [member] | Estimated fair value [Member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 11,073,000,000 | 7,084,000,000
Stage 1 [Member] | Estimated fair value [Member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 413,976,000,000 | 404,862,000,000
Stage 1 [Member] | Estimated fair value [Member] | Other [Member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 5,000,000 |
Stage 1 [Member] | Estimated fair value [Member] | Investment funds [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 4,129,000,000 | 3,345,000,000
Stage 1 [Member] | Estimated fair value [Member] | Brazilian government securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 327,546,000,000 | 326,031,000,000
Stage 1 [Member] | Estimated fair value [Member] | Other Shareholders [Member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets |  | 297,129,000,000
Stage 1 [Member] | Estimated fair value [Member] | Government securities - abroad [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 27,548,000,000 | 28,902,000,000
Stage 1 [Member] | Estimated fair value [Member] | Government securities - abroad [member] | Argentina [Member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 1,129,000,000 | 1,466,000,000
Stage 1 [Member] | Estimated fair value [Member] | Government securities - abroad [member] | United States [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 2,754,000,000 | 1,666,000,000
Stage 1 [Member] | Estimated fair value [Member] | Government securities - abroad [member] | Mexico [Member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 2,378,000,000 | 564,000,000
Stage 1 [Member] | Estimated fair value [Member] | Government securities - abroad [member] | Denmark [Member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets |  | 1,951,000,000
Stage 1 [Member] | Estimated fair value [Member] | Government securities - abroad [member] | Spain [Member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 2,411,000,000 | 2,937,000,000
Stage 1 [Member] | Estimated fair value [Member] | Government securities - abroad [member] | Korea [Member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 1,385,000,000 | 1,944,000,000
Stage 1 [Member] | Estimated fair value [Member] | Government securities - abroad [member] | Chile [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 8,211,000,000 | 9,761,000,000
Stage 1 [Member] | Estimated fair value [Member] | Government securities - abroad [member] | Paraguay [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 1,530,000,000 | 1,807,000,000
Stage 1 [Member] | Estimated fair value [Member] | Government securities - abroad [member] | Uruguay [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 652,000,000 | 828,000,000
Stage 1 [Member] | Estimated fair value [Member] | Government securities - abroad [member] | Colombia [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 6,065,000,000 | 5,945,000,000
Stage 1 [Member] | Estimated fair value [Member] | Government securities - abroad [member] | Other [Member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets |  | 33,000,000
Stage 1 [Member] | Estimated fair value [Member] | Government securities - abroad [member] | ITALY |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 115,000,000 |
Stage 1 [Member] | Estimated fair value [Member] | Government securities - abroad [member] | France [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 891,000,000 |
Stage 1 [Member] | Estimated fair value [Member] | Government securities - abroad [member] | Germany [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 22,000,000 |
Stage 1 [Member] | Estimated fair value [Member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 82,301,000,000 | 75,486,000,000
Stage 1 [Member] | Estimated fair value [Member] | Brazilian external debt bonds [Member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 299,998,000,000 |
Stage 1 [Member] | At cost [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 412,507,000,000 | 403,176,000,000
Stage 1 [Member] | At cost [member] | Other [Member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 5,000,000 |
Stage 1 [Member] | At cost [member] | Investment funds [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 4,335,000,000 | 3,351,000,000
Stage 1 [Member] | At cost [member] | Brazilian government securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 325,734,000,000 | 324,585,000,000
Stage 1 [Member] | At cost [member] | Other Shareholders [Member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 36,000,000 | 295,671,000,000
Stage 1 [Member] | At cost [member] | Government securities - abroad [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 27,614,000,000 | 28,914,000,000
Stage 1 [Member] | At cost [member] | Government securities - abroad [member] | Argentina [Member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 1,121,000,000 | 1,446,000,000
Stage 1 [Member] | At cost [member] | Government securities - abroad [member] | United States [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 2,770,000,000 | 1,684,000,000
Stage 1 [Member] | At cost [member] | Government securities - abroad [member] | Mexico [Member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 2,378,000,000 | 564,000,000
Stage 1 [Member] | At cost [member] | Government securities - abroad [member] | Denmark [Member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets |  | 1,951,000,000
Stage 1 [Member] | At cost [member] | Government securities - abroad [member] | Spain [Member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 2,411,000,000 | 2,937,000,000
Stage 1 [Member] | At cost [member] | Government securities - abroad [member] | Korea [Member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 1,385,000,000 | 1,944,000,000
Stage 1 [Member] | At cost [member] | Government securities - abroad [member] | Chile [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 8,204,000,000 | 9,765,000,000
Stage 1 [Member] | At cost [member] | Government securities - abroad [member] | Paraguay [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 1,602,000,000 | 1,922,000,000
Stage 1 [Member] | At cost [member] | Government securities - abroad [member] | Uruguay [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 656,000,000 | 824,000,000
Stage 1 [Member] | At cost [member] | Government securities - abroad [member] | Colombia [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 6,054,000,000 | 5,844,000,000
Stage 1 [Member] | At cost [member] | Government securities - abroad [member] | Other [Member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets |  | 33,000,000
Stage 1 [Member] | At cost [member] | Government securities - abroad [member] | ITALY |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 115,000,000 |
Stage 1 [Member] | At cost [member] | Government securities - abroad [member] | France [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 891,000,000 |
Stage 1 [Member] | At cost [member] | Government securities - abroad [member] | Germany [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 22,000,000 |
Stage 1 [Member] | At cost [member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 82,438,000,000 | 75,240,000,000
Stage 1 [Member] | At cost [member] | Brazilian external debt bonds [Member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 298,084,000,000 |
Stage 1 [Member] | Rural product note [Member] | Estimated fair value [Member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 3,848,000,000 | 2,511,000,000
Stage 1 [Member] | Rural product note [Member] | At cost [member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 3,855,000,000 | 2,518,000,000
Stage 1 [Member] | Securitized real estate loans [Member] | Estimated fair value [Member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 10,436,000,000 | 12,501,000,000
Stage 1 [Member] | Securitized real estate loans [Member] | At cost [member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 10,419,000,000 | 12,492,000,000
Stage 1 [Member] | Bank deposit certificates [member] | Estimated fair value [Member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 2,145,000,000 | 1,150,000,000
Stage 1 [Member] | Bank deposit certificates [member] | At cost [member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 2,145,000,000 | 1,150,000,000
Stage 1 [Member] | Debentures [member] | Estimated fair value [Member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 27,068,000,000 | 21,569,000,000
Stage 1 [Member] | Debentures [member] | At cost [member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 27,306,000,000 | 21,584,000,000
Stage 1 [Member] | Eurobonds and others [member] | Estimated fair value [Member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 6,895,000,000 | 6,192,000,000
Stage 1 [Member] | Eurobonds and others [member] | At cost [member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 6,950,000,000 | 6,195,000,000
Stage 1 [Member] | Financial bills [Member] | Estimated fair value [Member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 19,724,000,000 | 21,230,000,000
Stage 1 [Member] | Financial bills [Member] | At cost [member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 19,724,000,000 | 21,230,000,000
Stage 1 [Member] | Promissory notes [Member] | Estimated fair value [Member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 1,463,000,000 | 3,596,000,000
Stage 1 [Member] | Promissory notes [Member] | At cost [member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 1,465,000,000 | 3,597,000,000
Stage 1 [Member] | Other [member] | Estimated fair value [Member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 10,722,000,000 | 6,737,000,000
Stage 1 [Member] | Other [member] | At cost [member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 10,574,000,000 | 6,474,000,000
Stage 2 [Member] | Estimated fair value [Member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 3,111,000,000 | 1,305,000,000
Stage 2 [Member] | Estimated fair value [Member] | Brazilian government securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 174,000,000 | 196,000,000
Stage 2 [Member] | Estimated fair value [Member] | Other Shareholders [Member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets |  | 196,000,000
Stage 2 [Member] | Estimated fair value [Member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 2,937,000,000 | 1,109,000,000
Stage 2 [Member] | Estimated fair value [Member] | Brazilian external debt bonds [Member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 174,000,000 |
Stage 2 [Member] | At cost [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 4,140,000,000 | 1,771,000,000
Stage 2 [Member] | At cost [member] | Brazilian government securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 232,000,000 | 261,000,000
Stage 2 [Member] | At cost [member] | Other Shareholders [Member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets |  | 261,000,000
Stage 2 [Member] | At cost [member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 3,908,000,000 | 1,510,000,000
Stage 2 [Member] | At cost [member] | Brazilian external debt bonds [Member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 232,000,000 |
Stage 2 [Member] | Securitized real estate loans [Member] | Estimated fair value [Member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 55,000,000 | 59,000,000
Stage 2 [Member] | Securitized real estate loans [Member] | At cost [member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 55,000,000 | 64,000,000
Stage 2 [Member] | Debentures [member] | Estimated fair value [Member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 2,557,000,000 | 969,000,000
Stage 2 [Member] | Debentures [member] | At cost [member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 3,323,000,000 | 1,255,000,000
Stage 2 [Member] | Promissory notes [Member] | Estimated fair value [Member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 15,000,000 |
Stage 2 [Member] | Promissory notes [Member] | At cost [member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 15,000,000 |
Stage 2 [Member] | Other [member] | Estimated fair value [Member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 310,000,000 | 81,000,000
Stage 2 [Member] | Other [member] | At cost [member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 515,000,000 | 191,000,000
Stage 3 [Member] | Estimated fair value [Member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 2,165,000,000 | 2,917,000,000
Stage 3 [Member] | Estimated fair value [Member] | Investment funds [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 197,000,000 | 168,000,000
Stage 3 [Member] | Estimated fair value [Member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 1,968,000,000 | 2,749,000,000
Stage 3 [Member] | At cost [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 5,875,000,000 | 8,641,000,000
Stage 3 [Member] | At cost [member] | Investment funds [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 918,000,000 | 784,000,000
Stage 3 [Member] | At cost [member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 4,957,000,000 | 7,857,000,000
Stage 3 [Member] | Rural product note [Member] | Estimated fair value [Member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 155,000,000 | 228,000,000
Stage 3 [Member] | Rural product note [Member] | At cost [member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 326,000,000 | 381,000,000
Stage 3 [Member] | Securitized real estate loans [Member] | Estimated fair value [Member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 435,000,000 | 1,017,000,000
Stage 3 [Member] | Securitized real estate loans [Member] | At cost [member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 793,000,000 | 3,062,000,000
Stage 3 [Member] | Debentures [member] | Estimated fair value [Member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 1,325,000,000 | 1,220,000,000
Stage 3 [Member] | Debentures [member] | At cost [member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 3,563,000,000 | 3,892,000,000
Stage 3 [Member] | Promissory notes [Member] | Estimated fair value [Member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 12,000,000 | 18,000,000
Stage 3 [Member] | Promissory notes [Member] | At cost [member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 24,000,000 | 40,000,000
Stage 3 [Member] | Other [member] | Estimated fair value [Member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | 41,000,000 | 266,000,000
Stage 3 [Member] | Other [member] | At cost [member] | Corporate securities [member] |  |
Disclosure of Credit Quality [Line Items] |  |
Maximum exposure of other financial assets | R$ 251,000,000 | R$ 482,000,000

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