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Fair Value Measurement - Schedule of Fair Value Hierarchy for Gross Financial Assets and Liabilities (Details) - USD ($)
$ in Millions
Sep. 30, 2025
Dec. 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Commodity derivatives $ 563 $ 488
Fair Value, Measurements, Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments in debt securities 1,587 1,551
Commodity derivatives 563 488
Total assets 2,150 2,039
Commodity derivatives 489 480
Contingent consideration 59 145
Total liabilities 548 625
Fair Value, Measurements, Recurring | Level 1    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments in debt securities 264 261
Commodity derivatives 313 201
Total assets 577 462
Commodity derivatives 310 275
Contingent consideration 0 0
Total liabilities 310 275
Fair Value, Measurements, Recurring | Level 2    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments in debt securities 1,323 1,290
Commodity derivatives 204 252
Total assets 1,527 1,542
Commodity derivatives 131 160
Contingent consideration 0 0
Total liabilities 131 160
Fair Value, Measurements, Recurring | Level 3    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments in debt securities 0 0
Commodity derivatives 46 35
Total assets 46 35
Commodity derivatives 48 45
Contingent consideration 59 145
Total liabilities $ 107 $ 190