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Property, Plant and Equipment (Summary of Property, Plant and Equipment) (Details) - USD ($)
$ in Millions
Mar. 31, 2025
Dec. 31, 2024
Property, Plant and Equipment [Line Items]    
Gross PP&E $ 28,673 $ 28,404
Accumulated Depreciation 9,526 9,250
Net PP&E 19,147 19,154
Crude Oil and Products Logistics    
Property, Plant and Equipment [Line Items]    
Gross PP&E 13,370 13,189
Accumulated Depreciation 4,665 4,542
Net PP&E 8,705 8,647
Natural Gas and NGL Services    
Property, Plant and Equipment [Line Items]    
Gross PP&E 15,303 15,215
Accumulated Depreciation 4,861 4,708
Net PP&E $ 10,442 $ 10,507