Revenues, Revenues by Business Segment and Revenue Type (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenue [Abstract]
Revenues	$ 49,715	$ 58,186	$ 40,807
NGL Pipelines & Services [Member]
Revenue [Abstract]
Revenues	17,645	24,259	16,302
NGL Pipelines & Services [Member] | Sales of NGLs and Related Products [Member]
Revenue [Abstract]
Revenues	14,846	21,307	13,716
NGL Pipelines & Services [Member] | Midstream Services [Member]
Revenue [Abstract]
Revenues	2,799	2,952	2,586
NGL Pipelines & Services [Member] | Midstream Services: Natural Gas Processing and Fractionation [Member]
Revenue [Abstract]
Revenues	1,278	1,431	1,036
NGL Pipelines & Services [Member] | Midstream Services: Transportation [Member]
Revenue [Abstract]
Revenues	1,090	987	976
NGL Pipelines & Services [Member] | Midstream Services: Storage and Terminals [Member]
Revenue [Abstract]
Revenues	431	534	574
Crude Oil Pipelines & Services [Member]
Revenue [Abstract]
Revenues	19,336	18,561	10,902
Crude Oil Pipelines & Services [Member] | Sales of Crude Oil [Member]
Revenue [Abstract]
Revenues	18,185	17,301	9,519
Crude Oil Pipelines & Services [Member] | Midstream Services [Member]
Revenue [Abstract]
Revenues	1,151	1,260	1,383
Crude Oil Pipelines & Services [Member] | Midstream Services: Transportation [Member]
Revenue [Abstract]
Revenues	744	807	929
Crude Oil Pipelines & Services [Member] | Midstream Services: Storage and Terminals [Member]
Revenue [Abstract]
Revenues	407	453	454
Natural Gas Pipelines & Services [Member]
Revenue [Abstract]
Revenues	3,776	6,260	4,400
Natural Gas Pipelines & Services [Member] | Sales of Natural Gas [Member]
Revenue [Abstract]
Revenues	2,373	5,019	3,413
Natural Gas Pipelines & Services [Member] | Midstream Services [Member]
Revenue [Abstract]
Revenues	1,403	1,241	987
Natural Gas Pipelines & Services [Member] | Midstream Services: Transportation [Member]
Revenue [Abstract]
Revenues	1,403	1,241	987
Petrochemical & Refined Products Services [Member]
Revenue [Abstract]
Revenues	8,958	9,106	9,203
Petrochemical & Refined Products Services [Member] | Sales of Petrochemicals and Refined Products [Member]
Revenue [Abstract]
Revenues	7,689	8,003	8,196
Petrochemical & Refined Products Services [Member] | Midstream Services [Member]
Revenue [Abstract]
Revenues	1,269	1,103	1,007
Petrochemical & Refined Products Services [Member] | Midstream Services: Fractionation and Isomerization [Member]
Revenue [Abstract]
Revenues	282	222	275
Petrochemical & Refined Products Services [Member] | Midstream Services: Transportation [Member]
Revenue [Abstract]
Revenues	660	585	485
Petrochemical & Refined Products Services [Member] | Midstream Services: Storage and Terminals [Member]
Revenue [Abstract]
Revenues	$ 327	$ 296	$ 247