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Related parties - Remuneration of key personnel (Details) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disclosure of transactions between related parties [abstract]
Short-term benefits	R$ 50,396	R$ 77,269	R$ 35,263
Benefits, such as vehicle use, reimbursement, travel, and others	R$ 2,599	R$ 2,025	R$ 833

X

- Definition

The amount of compensation to key management personnel in the form of benefits, such as vehicle use, reimbursement, travel, and others.

+ References

No definition available.

+ Details

Name:	ambi_KeyManagementPersonnelCompensationVehicleUseReimbursementTravelAndOthers
Namespace Prefix:	ambi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

The amount of compensation to key management personnel in the form of short-term employee benefits. [Refer: Key management personnel of entity or parent [member]]

+ References

No definition available.

+ Details

Name:	ambi_ShortTermEmployeeBenefit
Namespace Prefix:	ambi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesAbstract
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration