15. Provisions for legal proceedings (Details 1) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
Jun. 30, 2020	Dec. 31, 2019
Provisions For Legal Proceedings
Opening Balance	$ 3,113	$ 2,089
Additions, net of reversals	65	1,290
Use of provision	(428)	(5,332)
Accruals and charges	109	233
Transfer to assets held for sale		313
Others	27	22
Cumulative translation adjustment	(797)	(216)
Closing Balance	$ 2,089	$ 3,113

The amount of additional other provisions made. [Refer: Other provisions]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 37
-IssueDate 2020-01-01
-Paragraph 84
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2020-en-r&anchor=para_84_b&doctype=Standard
-URIDate 2020-01-01

+ Details

Name:	ifrs-full_AdditionalProvisionsOtherProvisions
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The amount of provision for legal proceedings. [Refer: Other provisions]

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 37
-IssueDate 2020-01-01
-Section Example 10 A court case
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2020-en-r&doctype=Illustrative%20Examples&dita_xref=IAS37_IE_C_ex10_TI
-URIDate 2020-01-01

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 37
-IssueDate 2020-01-01
-Paragraph 87
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2020-en-r&anchor=para_87&doctype=Standard
-URIDate 2020-01-01

+ Details

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

- Definition

The amount used (ie incurred and charged against the provision) for other provisions. [Refer: Other provisions]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 37
-IssueDate 2020-01-01
-Paragraph 84
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2020-en-r&anchor=para_84_c&doctype=Standard
-URIDate 2020-01-01

+ Details

Name:	ifrs-full_ProvisionUsedOtherProvisions
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Accruals and charges in provisions.

+ References

No definition available.

+ Details

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

- Definition

The amouont of other provision.

+ References

No definition available.

+ Details

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

- References

No definition available.

+ Details

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

- Definition

Provisions relating to cumulative translating adjustments.

+ References

No definition available.

+ Details

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

- Definition

Transfers to assets held for sale.

+ References

No definition available.

+ Details

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