v3.26.3
Property, Plant and Equipment - Schedule of Historical Costs of our Property, Plant and Equipment and Related Balances (Details) - USD ($)
$ in Millions
 9 Months Ended
Sep. 30, 2026
Dec. 31, 2025
Property, Plant, and Equipment [Line Items]    
Property, plant and equipment, gross $ 78,332 $ 75,472
Less accumulated depreciation 25,945 24,338
Subtotal property, plant and equipment, net 52,387 51,134
Capitalized major maintenance costs for reaction-based plants, net of accumulated amortization 201 225
Property, plant and equipment, net 52,588 51,359
Plants, pipelines and facilities    
Property, Plant, and Equipment [Line Items]    
Property, plant and equipment, gross $ 69,158 66,498
Plants, pipelines and facilities | Minimum    
Property, Plant, and Equipment [Line Items]    
Estimated Useful Life in Years 3 years  
Plants, pipelines and facilities | Maximum    
Property, Plant, and Equipment [Line Items]    
Estimated Useful Life in Years 45 years  
Underground and other storage facilities    
Property, Plant, and Equipment [Line Items]    
Property, plant and equipment, gross $ 4,997 4,871
Underground and other storage facilities | Minimum    
Property, Plant, and Equipment [Line Items]    
Estimated Useful Life in Years 5 years  
Underground and other storage facilities | Maximum    
Property, Plant, and Equipment [Line Items]    
Estimated Useful Life in Years 40 years  
Transportation equipment    
Property, Plant, and Equipment [Line Items]    
Property, plant and equipment, gross $ 318 294
Transportation equipment | Minimum    
Property, Plant, and Equipment [Line Items]    
Estimated Useful Life in Years 3 years  
Transportation equipment | Maximum    
Property, Plant, and Equipment [Line Items]    
Estimated Useful Life in Years 10 years  
Marine vessels    
Property, Plant, and Equipment [Line Items]    
Property, plant and equipment, gross $ 993 970
Marine vessels | Minimum    
Property, Plant, and Equipment [Line Items]    
Estimated Useful Life in Years 15 years  
Marine vessels | Maximum    
Property, Plant, and Equipment [Line Items]    
Estimated Useful Life in Years 30 years  
Land    
Property, Plant, and Equipment [Line Items]    
Property, plant and equipment, gross $ 449 439
Construction in progress    
Property, Plant, and Equipment [Line Items]    
Property, plant and equipment, gross $ 2,417 $ 2,400
Distillation-based and reaction-based plants | Minimum    
Property, Plant, and Equipment [Line Items]    
Estimated Useful Life in Years 20 years  
Distillation-based and reaction-based plants | Maximum    
Property, Plant, and Equipment [Line Items]    
Estimated Useful Life in Years 35 years  
Pipelines and related equipment | Minimum    
Property, Plant, and Equipment [Line Items]    
Estimated Useful Life in Years 5 years  
Pipelines and related equipment | Maximum    
Property, Plant, and Equipment [Line Items]    
Estimated Useful Life in Years 45 years  
Terminal facilities | Minimum    
Property, Plant, and Equipment [Line Items]    
Estimated Useful Life in Years 10 years  
Terminal facilities | Maximum    
Property, Plant, and Equipment [Line Items]    
Estimated Useful Life in Years 35 years  
Buildings | Minimum    
Property, Plant, and Equipment [Line Items]    
Estimated Useful Life in Years 20 years  
Buildings | Maximum    
Property, Plant, and Equipment [Line Items]    
Estimated Useful Life in Years 40 years  
Office furniture and equipment | Minimum    
Property, Plant, and Equipment [Line Items]    
Estimated Useful Life in Years 3 years  
Office furniture and equipment | Maximum    
Property, Plant, and Equipment [Line Items]    
Estimated Useful Life in Years 20 years  
Laboratory and shop equipment | Minimum    
Property, Plant, and Equipment [Line Items]    
Estimated Useful Life in Years 5 years  
Laboratory and shop equipment | Maximum    
Property, Plant, and Equipment [Line Items]    
Estimated Useful Life in Years 35 years  
Underground storage facilities | Minimum    
Property, Plant, and Equipment [Line Items]    
Estimated Useful Life in Years 5 years  
Underground storage facilities | Maximum    
Property, Plant, and Equipment [Line Items]    
Estimated Useful Life in Years 35 years  
Storage tanks | Minimum    
Property, Plant, and Equipment [Line Items]    
Estimated Useful Life in Years 10 years  
Storage tanks | Maximum    
Property, Plant, and Equipment [Line Items]    
Estimated Useful Life in Years 40 years  
Water wells | Minimum    
Property, Plant, and Equipment [Line Items]    
Estimated Useful Life in Years 5 years  
Water wells | Maximum    
Property, Plant, and Equipment [Line Items]    
Estimated Useful Life in Years 35 years  
Capitalized Major Maintenance | Weighted Average    
Property, Plant, and Equipment [Line Items]    
Expected remaining amortization period 2 years