v3.25.4
Fair Value Measurement - Fair Value Hierarchy for Gross Financial Assets and Liabilities (Details)
$ in Millions
Dec. 31, 2025
USD ($)
$ / Boe
Dec. 31, 2024
USD ($)
$ / Boe
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments in debt securities $ 1,601 $ 1,551
Commodity derivatives 604 488
Total assets 2,205 2,039
Commodity derivatives 538 480
Contingent consideration 0 145
Total liabilities 538 625
Level 1    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments in debt securities 270 261
Commodity derivatives 306 201
Total assets 576 462
Commodity derivatives 354 275
Contingent consideration 0 0
Total liabilities 354 275
Level 2    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments in debt securities 1,331 1,290
Commodity derivatives 230 252
Total assets 1,561 1,542
Commodity derivatives 124 160
Contingent consideration 0 0
Total liabilities 124 160
Level 3    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments in debt securities 0 0
Commodity derivatives 68 35
Total assets 68 35
Commodity derivatives 60 45
Contingent consideration 0 145
Total liabilities $ 60 $ 190
Level 3 | Minimum | Measurement Input, Commodity Price Outlook | Valuation Technique, Discounted Cash Flow    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurment input | $ / Boe 43.17 48.63
Level 3 | Maximum | Measurement Input, Commodity Price Outlook | Valuation Technique, Discounted Cash Flow    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurment input | $ / Boe 51.97 57.53
Level 3 | Arithmetic Average | Measurement Input, Commodity Price Outlook | Valuation Technique, Discounted Cash Flow    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurment input | $ / Boe 46.47 53.38