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Risk and Capital Management - Summary of Funds Obtained Through the Issuance of Subordinated Debt Securities (Parenthetical) (Detail) | Dec. 31, 2019
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Brazil, Brazil Real | Subordinated financial bills one [Member] |
Disclosure of assets and liabilities according to their remaining contractual maturities [Line Items] |
Borrowings interest rate basis adjustment | 111.00%
Brazil, Brazil Real | Subordinated financial bills two [Member] | Bottom of range [member] |
Disclosure of assets and liabilities according to their remaining contractual maturities [Line Items] |
Borrowings interest rate basis adjustment | 6.00%
Brazil, Brazil Real | Subordinated financial bills two [Member] | Top of range [member] |
Disclosure of assets and liabilities according to their remaining contractual maturities [Line Items] |
Borrowings interest rate basis adjustment | 6.17%
Brazil, Brazil Real | Subordinated financial bills three [Member] | Bottom of range [member] |
Disclosure of assets and liabilities according to their remaining contractual maturities [Line Items] |
Borrowings interest rate basis adjustment | 109.25%
Brazil, Brazil Real | Subordinated financial bills three [Member] | Top of range [member] |
Disclosure of assets and liabilities according to their remaining contractual maturities [Line Items] |
Borrowings interest rate basis adjustment | 110.50%
Brazil, Brazil Real | Subordinated financial bills four [Member] | Bottom of range [member] |
Disclosure of assets and liabilities according to their remaining contractual maturities [Line Items] |
Borrowings interest rate basis adjustment | 5.15%
Brazil, Brazil Real | Subordinated financial bills four [Member] | Top of range [member] |
Disclosure of assets and liabilities according to their remaining contractual maturities [Line Items] |
Borrowings interest rate basis adjustment | 5.83%
Brazil, Brazil Real | Subordinated financial bills five [Member] |
Disclosure of assets and liabilities according to their remaining contractual maturities [Line Items] |
Borrowings interest rate basis adjustment | 4.63%
United States of America, Dollars | Subordinated euronotes [Member] |
Disclosure of assets and liabilities according to their remaining contractual maturities [Line Items] |
Borrowings interest rate | 6.20%
United States of America, Dollars | Subordinated euronotes one [Member] |
Disclosure of assets and liabilities according to their remaining contractual maturities [Line Items] |
Borrowings interest rate | 5.75%
United States of America, Dollars | Subordinated euronotes two [Member] | Bottom of range [member] |
Disclosure of assets and liabilities according to their remaining contractual maturities [Line Items] |
Borrowings interest rate | 5.75%
United States of America, Dollars | Subordinated euronotes two [Member] | Top of range [member] |
Disclosure of assets and liabilities according to their remaining contractual maturities [Line Items] |
Borrowings interest rate | 6.20%
United States of America, Dollars | Subordinated euronotes three [Member] |
Disclosure of assets and liabilities according to their remaining contractual maturities [Line Items] |
Borrowings interest rate | 6.20%
United States of America, Dollars | Subordinated euronotes four [Member] | Bottom of range [member] |
Disclosure of assets and liabilities according to their remaining contractual maturities [Line Items] |
Borrowings interest rate | 5.50%
United States of America, Dollars | Subordinated euronotes four [Member] | Top of range [member] |
Disclosure of assets and liabilities according to their remaining contractual maturities [Line Items] |
Borrowings interest rate | 5.65%
United States of America, Dollars | Subordinated euronotes five [Member] |
Disclosure of assets and liabilities according to their remaining contractual maturities [Line Items] |
Borrowings interest rate | 5.13%

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- Definition The adjustment to the basis (reference rate) used for calculation of the interest rate on borrowings. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph 7 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2019-en-r&anchor=para_7&doctype=Standard -URIDate 2019-03-27 + Details
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