v3.26.1
Fair Value Measurement - Schedule of Net Fair Value of Financial Instruments (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Financial Assets [Abstract]    
Investments in debt securities $ 1,613 $ 1,601
Carrying Amount    
Financial Assets [Abstract]    
Investments in debt securities 1,613 1,601
Financial Liabilities [Abstract]    
Total debt, excluding finance leases 22,553 22,643
Carrying Amount | Commodity Contract    
Financial Assets [Abstract]    
Commodity derivatives 327 237
Financial Liabilities [Abstract]    
Commodity derivatives 196 124
Estimate of Fair Value Measurement    
Financial Assets [Abstract]    
Investments in debt securities 1,613 1,601
Financial Liabilities [Abstract]    
Total debt, excluding finance leases 22,332 22,698
Estimate of Fair Value Measurement | Commodity Contract    
Financial Assets [Abstract]    
Commodity derivatives 327 237
Financial Liabilities [Abstract]    
Commodity derivatives $ 196 $ 124