v3.26.1
Business Segment Information - Schedule of Selected Financial Information by Reportable Segment (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Schedule of Segment Reporting Information By Segment [Abstract]      
Gains (Losses) on Asset Dispositions, Net $ 31 $ (1)  
Total 6,921 5,669  
Lease and Well 462 401  
Gathering, Processing and Transportation Costs 654 440  
Marketing Costs 1,384 1,325  
Depreciation, Depletion and Amortization 1,193 1,013  
General and Administrative 185 171  
Taxes Other Than Income 338 341  
Operating Income (Loss) 2,598 1,859  
Interest Income 31 68  
Other Expense (8) (3)  
Interest Expense, Net 66 47  
Income Before Income Taxes 2,555 1,877  
Additions to Oil and Gas Properties, Excluding Dry Hole Costs 1,520 1,356  
Total Property, Plant and Equipment, Net 42,674 34,632 $ 42,341
Total Assets 53,378 46,982 $ 51,799
Crude Oil and Condensate      
Schedule of Segment Reporting Information By Segment [Abstract]      
Revenue from contract with customer 3,577 3,293  
Natural Gas Liquids      
Schedule of Segment Reporting Information By Segment [Abstract]      
Revenue from contract with customer 664 572  
Natural Gas      
Schedule of Segment Reporting Information By Segment [Abstract]      
Revenue from contract with customer 1,021 637  
Gains (Losses) on Mark-to-Market Financial Commodity and Other Derivative Contracts, Net      
Schedule of Segment Reporting Information By Segment [Abstract]      
Revenue not from contract with customer 113 (191)  
Gathering, Processing and Marketing      
Schedule of Segment Reporting Information By Segment [Abstract]      
Revenue from contract with customer 1,496 1,340  
Other, Net      
Schedule of Segment Reporting Information By Segment [Abstract]      
Revenue not from contract with customer 19 19  
United States      
Schedule of Segment Reporting Information By Segment [Abstract]      
Gains (Losses) on Asset Dispositions, Net 31 3  
Total 6,818 5,583  
Lease and Well 446 385  
Gathering, Processing and Transportation Costs 653 440  
Marketing Costs 1,384 1,325  
Depreciation, Depletion and Amortization 1,152 963  
General and Administrative 175 162  
Taxes Other Than Income 335 340  
Other Segment Items 96 82  
Operating Income (Loss) 2,577 1,886  
Interest Income 28 64  
Interest Expense, Net 66 47  
Additions to Oil and Gas Properties, Excluding Dry Hole Costs 1,431 1,358  
Total Property, Plant and Equipment, Net 41,977 34,156  
Total Assets 51,774 45,652  
United States | Crude Oil and Condensate      
Schedule of Segment Reporting Information By Segment [Abstract]      
Revenue from contract with customer 3,564 3,286  
United States | Natural Gas Liquids      
Schedule of Segment Reporting Information By Segment [Abstract]      
Revenue from contract with customer 664 572  
United States | Natural Gas      
Schedule of Segment Reporting Information By Segment [Abstract]      
Revenue from contract with customer 934 554  
United States | Gains (Losses) on Mark-to-Market Financial Commodity and Other Derivative Contracts, Net      
Schedule of Segment Reporting Information By Segment [Abstract]      
Revenue not from contract with customer 113 (191)  
United States | Gathering, Processing and Marketing      
Schedule of Segment Reporting Information By Segment [Abstract]      
Revenue from contract with customer 1,493 1,340  
United States | Other, Net      
Schedule of Segment Reporting Information By Segment [Abstract]      
Revenue not from contract with customer 19 19  
Trinidad      
Schedule of Segment Reporting Information By Segment [Abstract]      
Gains (Losses) on Asset Dispositions, Net 0 0  
Total 99 90  
Lease and Well 10 14  
Gathering, Processing and Transportation Costs 1 0  
Marketing Costs 0 0  
Depreciation, Depletion and Amortization 41 50  
General and Administrative 3 4  
Taxes Other Than Income 2 1  
Other Segment Items 2 33  
Operating Income (Loss) 40 (12)  
Interest Income 2 3  
Interest Expense, Net 0 0  
Additions to Oil and Gas Properties, Excluding Dry Hole Costs 40 (2)  
Total Property, Plant and Equipment, Net 543 450  
Total Assets 1,201 1,133  
Trinidad | Crude Oil and Condensate      
Schedule of Segment Reporting Information By Segment [Abstract]      
Revenue from contract with customer 12 7  
Trinidad | Natural Gas Liquids      
Schedule of Segment Reporting Information By Segment [Abstract]      
Revenue from contract with customer 0 0  
Trinidad | Natural Gas      
Schedule of Segment Reporting Information By Segment [Abstract]      
Revenue from contract with customer 84 83  
Trinidad | Gains (Losses) on Mark-to-Market Financial Commodity and Other Derivative Contracts, Net      
Schedule of Segment Reporting Information By Segment [Abstract]      
Revenue not from contract with customer 0 0  
Trinidad | Gathering, Processing and Marketing      
Schedule of Segment Reporting Information By Segment [Abstract]      
Revenue from contract with customer 3 0  
Trinidad | Other, Net      
Schedule of Segment Reporting Information By Segment [Abstract]      
Revenue not from contract with customer 0 0  
Other International      
Schedule of Segment Reporting Information By Segment [Abstract]      
Gains (Losses) on Asset Dispositions, Net 0 (4)  
Total 4 (4)  
Lease and Well 6 2  
Gathering, Processing and Transportation Costs 0 0  
Marketing Costs 0 0  
Depreciation, Depletion and Amortization 0 0  
General and Administrative 7 5  
Taxes Other Than Income 1 0  
Other Segment Items 9 4  
Operating Income (Loss) (19) (15)  
Interest Income 1 1  
Interest Expense, Net 0 0  
Additions to Oil and Gas Properties, Excluding Dry Hole Costs 49 0  
Total Property, Plant and Equipment, Net 154 26  
Total Assets 403 197  
Other International | Crude Oil and Condensate      
Schedule of Segment Reporting Information By Segment [Abstract]      
Revenue from contract with customer 1 0  
Other International | Natural Gas Liquids      
Schedule of Segment Reporting Information By Segment [Abstract]      
Revenue from contract with customer 0 0  
Other International | Natural Gas      
Schedule of Segment Reporting Information By Segment [Abstract]      
Revenue from contract with customer 3 0  
Other International | Gains (Losses) on Mark-to-Market Financial Commodity and Other Derivative Contracts, Net      
Schedule of Segment Reporting Information By Segment [Abstract]      
Revenue not from contract with customer 0 0  
Other International | Gathering, Processing and Marketing      
Schedule of Segment Reporting Information By Segment [Abstract]      
Revenue from contract with customer 0 0  
Other International | Other, Net      
Schedule of Segment Reporting Information By Segment [Abstract]      
Revenue not from contract with customer $ 0 $ 0