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Fair Value Measurement - Fair Value Hierarchy for Gross Financial Assets and Liabilities (Details)
$ in Millions
Dec. 31, 2024
USD ($)
$ / Boe
Dec. 31, 2023
USD ($)
$ / Boe
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Commodity derivatives $ 488 $ 724
Fair Value, Measurements, Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments in debt securities 1,551 1,424
Commodity derivatives 488 724
Total assets 2,039 2,148
Commodity derivatives 480 647
Contingent consideration 145 312
Total liabilities 625 959
Level 1 | Fair Value, Measurements, Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments in debt securities 261 278
Commodity derivatives 201 308
Total assets 462 586
Commodity derivatives 275 350
Contingent consideration 0 0
Total liabilities 275 350
Level 2 | Fair Value, Measurements, Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments in debt securities 1,290 1,146
Commodity derivatives 252 301
Total assets 1,542 1,447
Commodity derivatives 160 283
Contingent consideration 0 0
Total liabilities 160 283
Level 3 | Fair Value, Measurements, Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments in debt securities 0 0
Commodity derivatives 35 115
Total assets 35 115
Commodity derivatives 45 14
Contingent consideration 145 312
Total liabilities $ 190 $ 326
Level 3 | Fair Value, Measurements, Recurring | 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 48.63 45.48
Level 3 | Fair Value, Measurements, Recurring | 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 57.53 63.04
Level 3 | Fair Value, Measurements, Recurring | 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 53.38 57.45