v3.25.4
Asset Retirement Obligations and Accrued Environmental Costs - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Site Contingency [Line Items]    
Accrued environmental costs $ 220 $ 206
Maximum number of years accrued environmental liabilities will be paid over 30 years  
Expected expenditures for acquired environmental obligations, weighted-average discount factor rate 5.00%  
Total environmental accrual included in balance sheet $ 119  
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration] Asset Retirement Obligations and Accrued Environmental Cost Non Current  
Accrued environmental costs discounted $ 133  
Cleanup Remediation Activities    
Site Contingency [Line Items]    
Accrued environmental costs 142 139
Corporate and Other Environmental Liabilities    
Site Contingency [Line Items]    
Accrued environmental costs 68 56
Federal Comprehensive Environmental Response Compensation and Liability Act or Similar State Laws    
Site Contingency [Line Items]    
Accrued environmental costs $ 10 $ 11