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21. EQUITY (Details 3) - BRL (R$) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
EquityAbstractLineItems [Line Items] |  |  |
Capital reserve | R$ 142,080 | R$ 192,845 |
Capital reserve [member] |  |  |
EquityAbstractLineItems [Line Items] |  |  |
Result on sale and exchange of shares | 125,532 | 125,532 | R$ 125,532
Share based payment | 223,191 | 223,011 | 229,872
Acquisition of non-controlling entities | (206,423) | (155,478) | (239,830)
Capital transactions with subsidiaries | (220) | (220) | (220)
Capital reserve | R$ 142,080 | R$ 192,845 | R$ 115,354

X
- Definition Represents amount related to capital transactions with subsidiaries. + References No definition available. + Details
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Balance Type: | debit
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- References No definition available. + Details
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Balance Type: | na
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X
- Definition Represents amount related to result on sale and exchange of shares. + References No definition available. + Details
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Namespace Prefix: | brf_
Data Type: | xbrli:monetaryItemType
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Period Type: | duration

X
- Definition Amount of granted options. + References No definition available. + Details
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Namespace Prefix: | brf_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition A component of equity representing the capital reserves. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_55&doctype=Standard -URIDate 2020-01-01 + Details
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Period Type: | instant

X
- Definition A component of equity that may result in relation to a business combination outside the scope of IFRS 3. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_55&doctype=Standard -URIDate 2020-01-01 + Details
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Namespace Prefix: | ifrs-full_
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Balance Type: | credit
Period Type: | instant

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- Details
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