RECONCILIATION OF FINANCIAL STATEMENTS TO FORM 5500 - Reconciliation of Net Income (Details) $ in Thousands	12 Months Ended
Dec. 31, 2025 USD ($)
BP Employee Savings Plan (Plan No. 001)
EBP, Reconciliation of Financial Statement to Form 5500 [Line Items]
Net increase in net assets after transfer per the financial statements	$ 800,911
Adjustment from contract value to fair value for fully benefit responsive investment contracts	(7,396)
Adjustment from contract value to fair value for fully benefit responsive investment contracts, prior year	15,484
Net increase after transfer per the Form 5500	808,999
BP Partnership Savings Plan (Plan No. 051)
EBP, Reconciliation of Financial Statement to Form 5500 [Line Items]
Net increase in net assets after transfer per the financial statements	6,934
Adjustment from contract value to fair value for fully benefit responsive investment contracts	(28)
Adjustment from contract value to fair value for fully benefit responsive investment contracts, prior year	66
Net increase after transfer per the Form 5500	6,972
BP DirectSave Plan (Plan No. 052)
EBP, Reconciliation of Financial Statement to Form 5500 [Line Items]
Net increase in net assets after transfer per the financial statements	2,232
Adjustment from contract value to fair value for fully benefit responsive investment contracts	(31)
Adjustment from contract value to fair value for fully benefit responsive investment contracts, prior year	60
Net increase after transfer per the Form 5500	2,261
BPX Energy Employee Savings Plan (Plan No. 100)
EBP, Reconciliation of Financial Statement to Form 5500 [Line Items]
Net increase in net assets after transfer per the financial statements	78,347
Adjustment from contract value to fair value for fully benefit responsive investment contracts	(120)
Adjustment from contract value to fair value for fully benefit responsive investment contracts, prior year	201
Net increase after transfer per the Form 5500	78,428
Archaea Employee Savings Plan (Plan No. 101)
EBP, Reconciliation of Financial Statement to Form 5500 [Line Items]
Net increase in net assets after transfer per the financial statements	13,814
Adjustment from contract value to fair value for fully benefit responsive investment contracts	(27)
Adjustment from contract value to fair value for fully benefit responsive investment contracts, prior year	68
Net increase after transfer per the Form 5500	$ 13,855

EBP, Change in Net Asset Available for Benefit, Increase (Decrease) After Transfer To (From) Plan

No definition available.

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- Definition

EBP, Reconciliation to Form 5500, Change in Net Asset Available for Benefit, Prior Period, Increase from Deemed Distribution

+ References

No definition available.

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- Definition

Amount of increase (decrease) in net asset available for benefit from net income (loss) as reported in Form 5500 caption for employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Form 5500 is form provided by Department of the Treasury, Internal Revenue Service (IRS); Department of Labor (DOL), Employee Benefit Security Administration (EBSA); and Pension Benefit Guaranty Corporation (PBGC).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Employee Retirement Income Security Act of 1974
-Number 2520
-Section 103
-Subsection 1
-Paragraph b
-Subparagraph (3)
-Publisher DOL-EBSA

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478416/962-205-50-1

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- Definition

Amount of increase (decrease) in net asset available for benefit from current value in excess of (less than) contract value of investment held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)) to reconcile change in net asset available for benefit per financial statement to Form 5500 caption. Form 5500 is form provided by Department of the Treasury, Internal Revenue Service (IRS); Department of Labor (DOL), Employee Benefit Security Administration (EBSA); and Pension Benefit Guaranty Corporation (PBGC).

+ References

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- 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 (i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478416/962-205-50-1

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