Fair Value Measurement - Schedule of Fair Value Measurement Inputs and Valuation Techniques (Details) - Fair Value, Recurring $ in Millions	Jun. 30, 2025 USD ($) $ / Boe	Dec. 31, 2024 USD ($) $ / Boe
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration \| $	$ 99	$ 145
Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration \| $	$ 99	$ 145
Level 3 \| Minimum \| Measurement Input, Commodity Price Outlook \| Valuation Technique, Discounted Cash Flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	48.66	48.63
Level 3 \| Maximum \| Measurement Input, Commodity Price Outlook \| Valuation Technique, Discounted Cash Flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	61.12	57.53
Level 3 \| Arithmetic Average \| Measurement Input, Commodity Price Outlook \| Valuation Technique, Discounted Cash Flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	52.75	53.38

CONOCOPHILLIPS 10-Q