Schedule of supplemental information on statement of cash flows (Details) - USD ($) $ in Millions	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021
Amounts paid/received during the period:
Withholding income tax paid on behalf of third-parties	$ 604	$ 386
Transactions not involving cash
Purchase of property, plant and equipment on credit	19
Lease	3,168	1,094
Provision/(reversals) for decommissioning costs	10	(1)
Use of tax credits and judicial deposit for the payment of contingency	1,137
Remeasurement of property, plant and equipment acquired in previous periods	$ 38

The element represents amounts paidreceived during period abstract.

No definition available.

Name:	pbr_AmountsPaidreceivedDuringPeriodAbstract
Namespace Prefix:	pbr_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The element represents capital expenditures and financing activities not involving cash abstract.

No definition available.

Name:	pbr_CapitalExpendituresAndFinancingActivitiesNotInvolvingCashAbstract
Namespace Prefix:	pbr_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The element represents capital expenditures incurred but not yet paid1.

No definition available.

Name:	pbr_CapitalExpendituresIncurredButNotYetPaid1
Namespace Prefix:	pbr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The element represents finance leases.

No definition available.

The element represents provision reversals for decommissioning costs.

No definition available.

Name:	pbr_ProvisionReversalsForDecommissioningCosts
Namespace Prefix:	pbr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The element represents remeasurement of property plant and equipment acquired in previous periods.

No definition available.

Name:	pbr_RemeasurementOfPropertyPlantAndEquipmentAcquiredInPreviousPeriods
Namespace Prefix:	pbr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The element represents use of deferred tax and judicial deposit.

No definition available.

Name:	pbr_UseOfDeferredTaxAndJudicialDeposit
Namespace Prefix:	pbr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The element represents withholding income tax paid on behalf of third parties.2

No definition available.

Name:	pbr_WithholdingIncomeTaxPaidOnBehalfOfThirdParties
Namespace Prefix:	pbr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration