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Post-employment Benefits - Summary of Plan Assets (Detail) - BRL (R$) R$ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Disclosure of fair value of plan assets [line items] |  |
Plan assets at fair value | R$ 484,895 | R$ 513,650
Percentage fair value of plan assets | 100.00% | 100.00%
Fixed income bonds [member] |  |
Disclosure of fair value of plan assets [line items] |  |
Plan assets at fair value | R$ 484,847 | R$ 513,470
Percentage fair value of plan assets | 99.99% | 99.96%
Other [member] |  |
Disclosure of fair value of plan assets [line items] |  |
Plan assets at fair value | R$ 48 | R$ 180
Percentage fair value of plan assets | 0.01% | 0.04%

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- Definition The amount of assets held by retirement benefit plans. [Refer: Defined benefit plans [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 26 -IssueDate 2021-01-01 -Paragraph 35 -Subparagraph a -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=26&code=ifrs-tx-2021-en-r&anchor=para_35_a_i&doctype=Standard -URIDate 2021-03-24 + Details
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- Details
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