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21. EQUITY (Details 2) - shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Equity
Shares at the beginning of the period	811,759,800	811,416,022	811,139,545
Purchase of treasury shares	(4,836,000)
Delivery of restricted shares	783,362	343,778	276,477
Shares at the end of the period	807,707,162	811,759,800	811,416,022

X

- Definition

The number of shares delivery of restricted shares.

+ References

No definition available.

+ Details

Name:	brf_AnticipatedTransferOfRestrictedShares
Namespace Prefix:	brf_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	brf_EquityOneAbstract
Namespace Prefix:	brf_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The increase in equity resulting from the purchase or issue of treasury shares.

+ References

No definition available.

+ Details

Name:	brf_SaleOfTreasuryShares
Namespace Prefix:	brf_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.

+ References

No definition available.

+ Details

Name:	brf_TreasuryStockShares1
Namespace Prefix:	brf_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant