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Properties, Plants and Equipment - Summary (Details) - USD ($)
$ in Millions
Mar. 31, 2025
Dec. 31, 2024
Property, Plant and Equipment [Line Items]    
Gross PP&E $ 56,408 $ 55,956
Accum. D&A 21,442 20,692
Net PP&E 34,966 35,264
Corporate and Other    
Property, Plant and Equipment [Line Items]    
Gross PP&E 1,676 1,688
Accum. D&A 1,003 945
Net PP&E 673 743
Midstream | Operating Segments    
Property, Plant and Equipment [Line Items]    
Gross PP&E 26,342 26,187
Accum. D&A 5,003 4,820
Net PP&E 21,339 21,367
Chemicals | Operating Segments    
Property, Plant and Equipment [Line Items]    
Gross PP&E 0 0
Accum. D&A 0 0
Net PP&E 0 0
Refining | Operating Segments    
Property, Plant and Equipment [Line Items]    
Gross PP&E 22,527 22,274
Accum. D&A 12,437 11,991
Net PP&E 10,090 10,283
Marketing and Specialties | Operating Segments    
Property, Plant and Equipment [Line Items]    
Gross PP&E 2,138 2,091
Accum. D&A 1,307 1,267
Net PP&E 831 824
Renewable Fuels | Operating Segments    
Property, Plant and Equipment [Line Items]    
Gross PP&E 3,725 3,716
Accum. D&A 1,692 1,669
Net PP&E $ 2,033 $ 2,047