EBP, Employer Contribution to Master Trust, Participant Compensation Matched, Percentage

No definition available.

Name:	bp_EBPEmployerContributionToMasterTrustParticipantCompensationMatchedPercentage
Namespace Prefix:	bp_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Employer Contribution Vesting Percentage

+ References

No definition available.

+ Details

Name:	bp_EBPEmployerContributionVestingPercentage
Namespace Prefix:	bp_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Employer Contribution Vesting Percentage Tranche Two

+ References

No definition available.

+ Details

Name:	bp_EBPEmployerContributionVestingPercentageTrancheTwo
Namespace Prefix:	bp_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Employer Contribution Vesting Service Period

+ References

No definition available.

+ Details

Name:	bp_EBPEmployerContributionVestingServicePeriod
Namespace Prefix:	bp_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Employer Contribution Vesting Service Period, Tranche Two

+ References

No definition available.

+ Details

Name:	bp_EBPEmployerContributionVestingServicePeriodTrancheTwo
Namespace Prefix:	bp_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Note Receivable From Participant, Account, Primary Residence, Maximum Borrowing Term

+ References

No definition available.

+ Details

Name:	bp_EBPNoteReceivableFromParticipantAccountPrimaryResidenceMaximumBorrowingTerm
Namespace Prefix:	bp_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Note Receivable From Participant, General Loan, Maximum Borrowing Term

+ References

No definition available.

+ Details

Name:	bp_EBPNoteReceivableFromParticipantGeneralLoanMaximumBorrowingTerm
Namespace Prefix:	bp_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Participant Contributions, Maximum Contribution, Percent in Broader Open-End Fund

+ References

No definition available.

+ Details

Name:	bp_EBPParticipantContributionsMaximumContributionPercentInBroaderOpenEndFund
Namespace Prefix:	bp_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Participant Loan, Basis Spread On Variable Rate

+ References

No definition available.

+ Details

Name:	bp_EBPParticipantLoanBasisSpreadOnVariableRate
Namespace Prefix:	bp_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Requisite Service Period

+ References

No definition available.

+ Details

Name:	bp_EBPRequisiteServicePeriod
Namespace Prefix:	bp_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Retirement Age

+ References

No definition available.

+ Details

Name:	bp_EBPRetirementAge
Namespace Prefix:	bp_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of net asset available for benefit transferred to (from) employee stock purchase, saving, or similar plan (employee benefit plan (EBP)) from (to) external plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 962
-SubTopic 325
-Name Accounting Standards Codification
-Section 55
-Paragraph 17
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478873/962-325-55-17

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6A-05(a)(Schedule III))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477804/962-205-S99-1

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478416/962-205-50-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section 45
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477063/962-205-45-8

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitTransferToFromExternalPlan
Namespace Prefix:	us-gaap-ebp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478416/962-205-50-1

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems
Namespace Prefix:	us-gaap-ebp_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of participant compensation eligible for employer matching contribution for participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanEmployerContributionParticipantCompensationMatchedPercentage
Namespace Prefix:	us-gaap-ebp_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of plan asset, in forfeited nonvested account, no longer allocated to participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanForfeitedNonvestedAccount
Namespace Prefix:	us-gaap-ebp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of decrease in forfeited nonvested account of employee stock purchase, saving, or similar plan (employee benefit plan (EBP)) from employer contribution.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 962
-SubTopic 325
-Name Accounting Standards Codification
-Section 55
-Paragraph 17
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478873/962-325-55-17

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (j)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478416/962-205-50-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6A-04(5)(c))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477804/962-205-S99-1

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanForfeitedNonvestedAccountDecreaseForEmployerContribution
Namespace Prefix:	us-gaap-ebp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of maximum account balance that participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)) can borrow.

+ References

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanNoteReceivableFromParticipantAccountMaximumBorrowingAmount
Namespace Prefix:	us-gaap-ebp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Percentage of maximum account balance that participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)) can borrow to total participant account balance.

+ References

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanNoteReceivableFromParticipantAccountMaximumBorrowingToTotalAccountPercentage
Namespace Prefix:	us-gaap-ebp_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of minimum account balance that participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)) can borrow.

+ References

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanNoteReceivableFromParticipantAccountMinimumBorrowingAmount
Namespace Prefix:	us-gaap-ebp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Percentage of eligible compensation contributed for participant automatically enrolled in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanParticipantContributionAutomaticDeferralRate
Namespace Prefix:	us-gaap-ebp_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of maximum pretax annual compensation that participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)), is permitted to contribute to total pretax annual compensation.

+ References

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanParticipantContributionPretaxMaximumAnnualCompensationToTotalCompensationPercentage
Namespace Prefix:	us-gaap-ebp_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	dei_LegalEntityAxis=bp_EBP001Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=bp_EBP051Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=bp_EBP052Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=bp_EBP100Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	bp_EBPEmployerContributionTypeAxis=bp_EBPQualifiedNonElectiveContributionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=bp_EBP101Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

DESCRIPTION OF THE PLANS (Details)		6 Months Ended		9 Months Ended	12 Months Ended
DESCRIPTION OF THE PLANS (Details)	Mar. 31, 2023	Dec. 31, 2025 USD ($)	Jun. 30, 2025	Dec. 31, 2025 USD ($)	Dec. 31, 2025 USD ($) yr	Dec. 31, 2024 USD ($)
BP Employee Savings Plan (Plan No. 001)
EBP, Description of Plan [Line Items]
Pretax, maximum qualified pay, percentage					80.00%
Matched percentage		4.00%	7.00%
Participant compensation matched, percentage		0.03
Automatic deferral rate					7.00%
Retirement age \| yr					65
Vesting period					3 years
Forfeited nonvested account, decrease from employer contribution					$ 3,378,179
Forfeited nonvested account		$ 478,969		$ 478,969	478,969	$ 625,874
Plan mergers				$ 2,500,000	$ 2,538,000
Maximum borrowing, percentage		50.00%		50.00%	50.00%
Maximum borrowing, amount		$ 50,000		$ 50,000	$ 50,000
Minimum borrowing, amount		$ 1,000		1,000	$ 1,000
Basis spread on variable rate					0.01
General loan, borrowing term					5 years
Principal residence, borrowing term					15 years
BP Partnership Savings Plan (Plan No. 051)
EBP, Description of Plan [Line Items]
Pretax, maximum qualified pay, percentage					80.00%
Matched percentage		4.00%	3.00%
Automatic deferral rate		4.00%	3.00%
Retirement age \| yr					65
Vesting period					3 years
Forfeited nonvested account, decrease from employer contribution					$ 144,318
Forfeited nonvested account		$ 3,774		$ 3,774	3,774	70,300
Plan mergers					$ 0
Maximum contribution, percent in broader open-end fund					1
Maximum borrowing, percentage		50.00%		50.00%	50.00%
Maximum borrowing, amount		$ 50,000		$ 50,000	$ 50,000
Minimum borrowing, amount		1,000		1,000	$ 1,000
Basis spread on variable rate					0.01
General loan, borrowing term					5 years
Principal residence, borrowing term					15 years
BP DirectSave Plan (Plan No. 052)
EBP, Description of Plan [Line Items]
Pretax, maximum qualified pay, percentage					80.00%
Matched percentage					4.00%
Vesting period	2 years
Forfeited nonvested account, decrease from employer contribution					$ 138,866
Forfeited nonvested account		$ 30,435		$ 30,435	$ 30,435	157,085
Minimum service period					6 months
Employer contribution percentage	0.25
Employer contribution percentage, tranche two	1
Vesting period, tranche two	3 years
Plan mergers					$ 0
Maximum contribution, percent in broader open-end fund					1
Maximum borrowing, percentage		50.00%		50.00%	50.00%
Maximum borrowing, amount		$ 50,000		$ 50,000	$ 50,000
Minimum borrowing, amount		$ 1,000		1,000	$ 1,000
General loan, borrowing term					5 years
Principal residence, borrowing term					15 years
BPX Energy Employee Savings Plan (Plan No. 100)
EBP, Description of Plan [Line Items]
Pretax, maximum qualified pay, percentage					80.00%
Matched percentage		4.00%	7.00%
Automatic deferral rate					7.00%
Retirement age \| yr					65
Vesting period					3 years
Forfeited nonvested account, decrease from employer contribution					$ 1,026,386
Forfeited nonvested account		$ 104,417		$ 104,417	104,417	472,521
Plan mergers					$ 0
Maximum contribution, percent in broader open-end fund					1
Maximum borrowing, percentage		50.00%		50.00%	50.00%
Maximum borrowing, amount		$ 50,000		$ 50,000	$ 50,000
Minimum borrowing, amount		$ 1,000		1,000	$ 1,000
Basis spread on variable rate					0.01
General loan, borrowing term					5 years
Principal residence, borrowing term					15 years
BPX Energy Employee Savings Plan (Plan No. 100) \| Qualified elective contributions
EBP, Description of Plan [Line Items]
Employer contribution percentage		0.10	0.07
Archaea Employee Savings Plan (Plan No. 101)
EBP, Description of Plan [Line Items]
Pretax, maximum qualified pay, percentage					80.00%
Matched percentage					4.00%
Automatic deferral rate					4.00%
Retirement age \| yr					65
Vesting period					3 years
Forfeited nonvested account, decrease from employer contribution					$ 161,974
Forfeited nonvested account		$ 87,257		$ 87,257	87,257	$ 10,725
Plan mergers					$ 0
Maximum contribution, percent in broader open-end fund					1
Maximum borrowing, percentage		50.00%		50.00%	50.00%
Maximum borrowing, amount		$ 50,000		$ 50,000	$ 50,000
Minimum borrowing, amount		$ 1,000		$ 1,000	$ 1,000
Basis spread on variable rate					0.01
General loan, borrowing term					5 years
Principal residence, borrowing term					15 years
Archaea Employee Savings Plan (Plan No. 101) \| Qualified elective contributions
EBP, Description of Plan [Line Items]
Employer contribution percentage					0.03