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Financial Assets at Fair Value Through Profit or Loss - Summary of Financial Assets at Fair Value Through Profit or Loss (Parenthetical) (Detail) - BRL (R$) R$ in Millions | Dec. 31, 2019 | Dec. 31, 2018
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Disclosure of financial assets at fair value through profit or loss [line items] |  |
Securities pledged as Guarantee of Funding of Financial Institutions and Clients | R$ 27,040 | R$ 33,848
Brazilian government securities [member] |  |
Disclosure of financial assets at fair value through profit or loss [line items] |  |
Securities pledged as Guarantee of Funding of Financial Institutions and Clients | 9,583 | 24,988
Brazilian government securities [member] | Held-for-trading financial assets [Member] |  |
Disclosure of financial assets at fair value through profit or loss [line items] |  |
Securities pledged as Guarantee of Funding of Financial Institutions and Clients | 28,759 | 30,114
Government securities - abroad [member] | Held-for-trading financial assets [Member] |  |
Disclosure of financial assets at fair value through profit or loss [line items] |  |
Securities pledged as Guarantee of Funding of Financial Institutions and Clients | 329 | 131
Corporate securities [member] | Held-for-trading financial assets [Member] |  |
Disclosure of financial assets at fair value through profit or loss [line items] |  |
Securities pledged as Guarantee of Funding of Financial Institutions and Clients | R$ 29,192 | R$ 30,245

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- Definition The amount of financial assets that the entity has pledged as collateral for liabilities or contingent liabilities, including amounts that have been reclassified in accordance with paragraph 3.2.23(a) of IFRS 9. [Refer: Contingent liabilities [member]; Financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph 14 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2019-en-r&anchor=para_14_a&doctype=Standard -URIDate 2019-03-27 + Details
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