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Financial Assets Held for Trading and Designated at Fair Value Through Profit or Loss - Summary of Cost and Fair Value by Maturity of Financial Assets Designated as Fair Value Through Profit or Loss (Detail) - BRL (R$) R$ in Millions | Dec. 31, 2021 | Dec. 31, 2020
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Disclosure of maturity analysis for derivative financial assets designated at fair value through profit or loss [Line Items] |  |
Current | R$ 3,044 | R$ 3,740
At Fair Value Through Profit or Loss | 434,169 | 465,581
Cost [Member] |  |
Disclosure of maturity analysis for derivative financial assets designated at fair value through profit or loss [Line Items] |  |
Current | 1,474 | 1,806
Non-current | 1,601 | 1,893
At Fair Value Through Profit or Loss | 3,075 | 3,699
Cost [Member] | Up to one year [member] |  |
Disclosure of maturity analysis for derivative financial assets designated at fair value through profit or loss [Line Items] |  |
Current | 1,474 | 1,806
Cost [Member] | From one to five years [member] |  |
Disclosure of maturity analysis for derivative financial assets designated at fair value through profit or loss [Line Items] |  |
Non-current | 1,601 | 1,893
Fair value [Member] |  |
Disclosure of maturity analysis for derivative financial assets designated at fair value through profit or loss [Line Items] |  |
Current | 1,458 | 1,826
Non-current | 1,586 | 1,914
At Fair Value Through Profit or Loss | 3,044 | 3,740
Fair value [Member] | Up to one year [member] |  |
Disclosure of maturity analysis for derivative financial assets designated at fair value through profit or loss [Line Items] |  |
Current | 1,458 | 1,826
Fair value [Member] | From one to five years [member] |  |
Disclosure of maturity analysis for derivative financial assets designated at fair value through profit or loss [Line Items] |  |
Non-current | R$ 1,586 | R$ 1,914

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- Definition The amount of current financial assets measured at fair value through profit or loss. [Refer: Financial assets at fair value through profit or loss] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2021-01-01 -Paragraph 8 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_8_a&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The amount of financial assets that are measured at fair value and for which gains (losses) are recognised in profit or loss. A financial asset shall be measured at fair value through profit or loss unless it is measured at amortised cost or at fair value through other comprehensive income. A gain (loss) on a financial asset measured at fair value shall be recognised in profit or loss unless it is part of a hedging relationship, it is an investment in an equity instrument for which the entity has elected to present gains and losses in other comprehensive income or it is a financial asset measured at fair value through other comprehensive income. [Refer: At fair value [member]; Financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2021-01-01 -Paragraph 8 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_8_a&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The amount of non-current financial assets measured at fair value through profit or loss. [Refer: Financial assets at fair value through profit or loss] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2021-01-01 -Paragraph 8 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_8_a&doctype=Standard -URIDate 2021-03-24 + Details
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