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Securities Sold Under Repurchase Agreements and Interbank and Institutional Market Funds - Summary of Interbank Market Debt (Detail) - BRL (R$) R$ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020
Disclosure Of Repurchase Agreements [Line Items] |  |
Interbank market funds | R$ 177,145 | R$ 156,035
Financial bills [member] |  |
Disclosure Of Repurchase Agreements [Line Items] |  |
Interbank market funds | R$ 24,059 | 43,589
Financial bills [member] | Bottom of range [member] |  |
Disclosure Of Repurchase Agreements [Line Items] |  |
Percentage of interest on interbank market debt | 3.40% |
Financial bills [member] | Top of range [member] |  |
Disclosure Of Repurchase Agreements [Line Items] |  |
Percentage of interest on interbank market debt | 3.95% |
Real estate credit bills [member] |  |
Disclosure Of Repurchase Agreements [Line Items] |  |
Interbank market funds | R$ 10,663 | 4,205
Real estate credit bills [member] | Bottom of range [member] |  |
Disclosure Of Repurchase Agreements [Line Items] |  |
Percentage of interest on interbank market debt | 2.92% |
Real estate credit bills [member] | Top of range [member] |  |
Disclosure Of Repurchase Agreements [Line Items] |  |
Percentage of interest on interbank market debt | 3.70% |
Agribusiness credit bills [member] |  |
Disclosure Of Repurchase Agreements [Line Items] |  |
Interbank market funds | R$ 13,701 | 14,285
Agribusiness credit bills [member] | Bottom of range [member] |  |
Disclosure Of Repurchase Agreements [Line Items] |  |
Percentage of interest on interbank market debt | 2.56% |
Agribusiness credit bills [member] | Top of range [member] |  |
Disclosure Of Repurchase Agreements [Line Items] |  |
Percentage of interest on interbank market debt | 12.36% |
Guaranteed real state notes [member] |  |
Disclosure Of Repurchase Agreements [Line Items] |  |
Interbank market funds | R$ 30,998 | 11,029
Guaranteed real state notes [member] | Bottom of range [member] |  |
Disclosure Of Repurchase Agreements [Line Items] |  |
Percentage of interest on interbank market debt | 6.08% |
Guaranteed real state notes [member] | Top of range [member] |  |
Disclosure Of Repurchase Agreements [Line Items] |  |
Percentage of interest on interbank market debt | 95.00% |
Import and export financing [member] |  |
Disclosure Of Repurchase Agreements [Line Items] |  |
Interbank market funds | R$ 86,948 | 71,470
Import and export financing [member] | Bottom of range [member] |  |
Disclosure Of Repurchase Agreements [Line Items] |  |
Percentage of interest on interbank market debt | 0.00% |
Import and export financing [member] | Top of range [member] |  |
Disclosure Of Repurchase Agreements [Line Items] |  |
Percentage of interest on interbank market debt | 13.14% |
On-lending - domestic [member] |  |
Disclosure Of Repurchase Agreements [Line Items] |  |
Interbank market funds | R$ 10,776 | 11,457
On-lending - domestic [member] | Bottom of range [member] |  |
Disclosure Of Repurchase Agreements [Line Items] |  |
Percentage of interest on interbank market debt | 0.00% |
On-lending - domestic [member] | Top of range [member] |  |
Disclosure Of Repurchase Agreements [Line Items] |  |
Percentage of interest on interbank market debt | 17.00% |
Current [member] |  |
Disclosure Of Repurchase Agreements [Line Items] |  |
Interbank market funds | R$ 98,106 | 94,921
Current [member] | Financial bills [member] |  |
Disclosure Of Repurchase Agreements [Line Items] |  |
Interbank market funds | 20,310 | 21,898
Current [member] | Real estate credit bills [member] |  |
Disclosure Of Repurchase Agreements [Line Items] |  |
Interbank market funds | 3,628 | 2,600
Current [member] | Agribusiness credit bills [member] |  |
Disclosure Of Repurchase Agreements [Line Items] |  |
Interbank market funds | 4,342 | 10,166
Current [member] | Guaranteed real state notes [member] |  |
Disclosure Of Repurchase Agreements [Line Items] |  |
Interbank market funds | 1,623 | 437
Current [member] | Import and export financing [member] |  |
Disclosure Of Repurchase Agreements [Line Items] |  |
Interbank market funds | 64,274 | 56,148
Current [member] | On-lending - domestic [member] |  |
Disclosure Of Repurchase Agreements [Line Items] |  |
Interbank market funds | 3,929 | 3,672
Non-current [member] |  |
Disclosure Of Repurchase Agreements [Line Items] |  |
Interbank market funds | 79,039 | 61,114
Non-current [member] | Financial bills [member] |  |
Disclosure Of Repurchase Agreements [Line Items] |  |
Interbank market funds | 3,749 | 21,691
Non-current [member] | Real estate credit bills [member] |  |
Disclosure Of Repurchase Agreements [Line Items] |  |
Interbank market funds | 7,035 | 1,605
Non-current [member] | Agribusiness credit bills [member] |  |
Disclosure Of Repurchase Agreements [Line Items] |  |
Interbank market funds | 9,359 | 4,119
Non-current [member] | Guaranteed real state notes [member] |  |
Disclosure Of Repurchase Agreements [Line Items] |  |
Interbank market funds | 29,375 | 10,592
Non-current [member] | Import and export financing [member] |  |
Disclosure Of Repurchase Agreements [Line Items] |  |
Interbank market funds | 22,674 | 15,322
Non-current [member] | On-lending - domestic [member] |  |
Disclosure Of Repurchase Agreements [Line Items] |  |
Interbank market funds | R$ 6,847 | R$ 7,785

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