Represents the amount of bargain purchase gain.

No definition available.

Name:	agro3_BargainPurchaseGain
Namespace Prefix:	agro3_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Contract maturity period.

+ References

No definition available.

+ Details

Name:	agro3_ContractMaturityPeriod
Namespace Prefix:	agro3_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount equivalent on the transaction date.

+ References

No definition available.

+ Details

Name:	agro3_EquivalentAmount
Namespace Prefix:	agro3_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- References

No definition available.

+ Details

Name:	agro3_HectaresOfArea
Namespace Prefix:	agro3_
Data Type:	dtr:areaItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of installment value paid by the buyer.

+ References

No definition available.

+ Details

Name:	agro3_InstallmentAmountPaid
Namespace Prefix:	agro3_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- References

No definition available.

+ Details

Name:	agro3_MainCorporateEventsLineItems
Namespace Prefix:	agro3_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of soybean bags.

+ References

No definition available.

+ Details

Name:	agro3_NumberOfSoybeanBags
Namespace Prefix:	agro3_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Payment of installment.

+ References

No definition available.

+ Details

Name:	agro3_PaymentOfInstallment
Namespace Prefix:	agro3_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Productive hectares.

+ References

No definition available.

+ Details

Name:	agro3_ProductiveHectares
Namespace Prefix:	agro3_
Data Type:	dtr-types:areaItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

Name:	agro3_SaleOfGainAmount
Namespace Prefix:	agro3_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Sale of hectares.

+ References

No definition available.

+ Details

Name:	agro3_SaleOfHectares
Namespace Prefix:	agro3_
Data Type:	dtr:areaItemType
Balance Type:	na
Period Type:	duration

- Definition

Total purchase price.

+ References

No definition available.

+ Details

Name:	agro3_TotalPurchasePrice
Namespace Prefix:	agro3_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Weight of beef.

+ References

No definition available.

+ Details

Name:	agro3_WeightOfBeef1
Namespace Prefix:	agro3_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of cash on hand and demand deposits. [Refer: Cash on hand]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 7
-IssueDate 2025-01-01
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-URIDate 2025-03-27

+ Details

Name:	ifrs-full_Cash
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amounts payable that the entity does not separately disclose in the same statement or note.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Note Expiry date 2027-01-01
-Name IAS
-Number 1
-IssueDate 2025-01-01
-Paragraph 55
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-URIDate 2025-03-27

+ Details

Name:	ifrs-full_OtherPayables
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of property, plant and equipment that the entity does not separately disclose in the same statement or note. [Refer: Property, plant and equipment]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 16
-IssueDate 2025-01-01
-Paragraph 37
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2025-en-r&anchor=para_37&doctype=Standard
-URIDate 2025-03-27

+ Details

Name:	ifrs-full_OtherPropertyPlantAndEquipment
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=2&code=ifrs-tx-2025-en-r&anchor=para_36_f&doctype=Standard
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-URIDate 2025-03-27

+ Details

Name:	ifrs-full_ReversalOfInventoryWritedown
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	ifrs-full_AgriculturalProduceByGroupAxis=agro3_RioDoMeioIIFarmMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_AgriculturalProduceByGroupAxis=agro3_AltoTaquariIVMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_AgriculturalProduceByGroupAxis=agro3_PrefernciaFarmMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_AgriculturalProduceByGroupAxis=agro3_CajueiroRealEstateSubsidiaryMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_AgriculturalProduceByGroupAxis=agro3_ChaparralFarmMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_AgriculturalProduceByGroupAxis=agro3_AltoDaSerraFarmMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_AgriculturalProduceByGroupAxis=agro3_MarangatuIIMember
Namespace Prefix:
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Main Corporate Events (Details) R$ in Thousands, $ in Thousands												1 Months Ended	12 Months Ended
	Mar. 31, 2026 BRL (R$) ha	Mar. 31, 2026 USD ($) ha	Mar. 17, 2026 USD ($) ha	Jun. 30, 2025 ha	May 23, 2025 BRL (R$) ha	Sep. 30, 2024 BRL (R$) ha	Sep. 26, 2024 BRL (R$) ha	Aug. 06, 2024 BRL (R$) ha	Mar. 20, 2024 BRL (R$)	Mar. 14, 2024 BRL (R$) ha	Mar. 12, 2024 BRL (R$)	Jun. 30, 2025 BRL (R$) Arrobas	Jun. 30, 2026 BRL (R$) ha Arrobas	Jun. 30, 2026 USD ($) ha Arrobas	Jun. 30, 2025 BRL (R$)	Jun. 30, 2026 USD ($)
Main Corporate Events [Line Items]
Sale of hectares (in Hectares) \| ha										8,757
Number of soybean bags										3,031,783
Equivalent amount										R$ 415,071
Weight of beef (in Arrobas) \| Arrobas													52,773	52,773
Down payment													R$ 3,005		R$ 37,580
Installment amount paid									R$ 53,533
Hectares of area \| ha								4,767
Productive agreed value (in Dollars) \| $			$ 1,492
Contract period								16 years
Total purchase price													6,157
Bargain purchase gain													R$ 348
Rio do Meio II Farm [Member]
Main Corporate Events [Line Items]
Sale of hectares (in Hectares) \| ha					660	190
Number of soybean bags					75,454	54,053
Equivalent amount					R$ 10,064	R$ 7,128
Productive hectares (in Hectares) \| ha					(243)	(178)
Alto Taquari IV [Member]
Main Corporate Events [Line Items]
Sale of hectares (in Hectares) \| ha							1,157
Number of soybean bags							1,272,274
Equivalent amount							R$ 189,401
Preferência Farm [Member]
Main Corporate Events [Line Items]
Sale of hectares (in Hectares) \| ha				17,799
Weight of beef (in Arrobas) \| Arrobas												452,342
Down payment												R$ 2,000
Payment of installment												40,000
Cajueiro Real Estate [Member]
Main Corporate Events [Line Items]
Sale of hectares (in Hectares) \| ha				12,413
Equivalent amount												R$ 140,000
Weight of beef (in Arrobas) \| Arrobas												135,703	316,640	316,640
Chaparral Farm [Member]
Main Corporate Events [Line Items]
Sale of hectares (in Hectares) \| ha										12,297
Number of soybean bags									421,964
Alto da Serra Farm [Member]
Main Corporate Events [Line Items]
Agricultural area amount											R$ 8,160
Contract period											12 years
Novo Horizonte Agricultural Company [Member]
Main Corporate Events [Line Items]
Cash													R$ 4,852
Cash payable								R$ 1,305
Marangatu II [Member]
Main Corporate Events [Line Items]
Sale of hectares (in Hectares) \| ha	372	372	921										549	549
Equivalent amount	R$ 3,059	$ 590											R$ 1,583	$ 301
Productive agreed value (in Dollars) \| $			$ 3													$ 903
Productive hectares (in Hectares) \| ha	(201)	(201)	(502)										(301)	(301)