Property, Plant and Equipment, Impairments (Details) $ in Millions		12 Months Ended
		Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Asset Impairment Charges [Abstract]
Impairment of property, plant and equipment		$ 41	$ 218	$ 590
Total asset impairment charges		53	233	890
Proceeds from asset sales and other matters		122	64	13
South Texas natural gas gathering and processing assets [Member]
Asset Impairment Charges [Abstract]
Impairment of property, plant and equipment				125
Impairment of intangible assets				1
Total asset impairment charges				126
NGL Pipelines & Services [Member]
Asset Impairment Charges [Abstract]
Impairment of property, plant and equipment	[1]	23	20	208
NGL Pipelines & Services [Member] | South Texas natural gas processing assets [Member]
Asset Impairment Charges [Abstract]
Impairment of property, plant and equipment				87
Crude Oil Pipelines & Services [Member]
Asset Impairment Charges [Abstract]
Impairment of property, plant and equipment	[2]	3	15	45
Crude Oil Pipelines & Services [Member] | Midland-to-Echo 4 Pipeline [Member]
Asset Impairment Charges [Abstract]
Impairment of property, plant and equipment				42
Natural Gas Pipelines & Services [Member]
Asset Impairment Charges [Abstract]
Impairment of property, plant and equipment	[3]	6	56	44
Natural Gas Pipelines & Services [Member] | Coal bed natural gas gathering system and related Val Verde treating facility [Member]
Asset Impairment Charges [Abstract]
Impairment of property, plant and equipment			37
Impairment of intangible assets			7
Total asset impairment charges			44
Proceeds from asset sales and other matters			39
Natural Gas Pipelines & Services [Member] | South Texas natural gas gathering assets [Member]
Asset Impairment Charges [Abstract]
Impairment of property, plant and equipment				38
Petrochemical & Refined Products Services [Member]
Asset Impairment Charges [Abstract]
Impairment of property, plant and equipment	[4]	$ 9	127	293
Petrochemical & Refined Products Services [Member] | Marine transportation business [Member]
Asset Impairment Charges [Abstract]
Impairment of property, plant and equipment			113	252
Impairment of intangible assets			1	5
Total asset impairment charges			$ 114	$ 257
Petrochemical & Refined Products Services [Member] | Marine transportation business [Member] | Measurement input, growth rate [Member]
Asset Impairment Charges [Abstract]
Long-lived asset, measurement input			0.022	0.021
Petrochemical & Refined Products Services [Member] | Marine transportation business [Member] | Measurement input, discount rate [Member]
Asset Impairment Charges [Abstract]
Long-lived asset, measurement input			0.087	0.093

[1] 2020 amount includes an $87 million non-cash impairment charges associated with our South Texas processing assets.

[2] 2020 amount includes a $42 million non-cash impairment charge associated with the cancellation of our Midland-to-ECHO 4 Pipeline construction project.

[3] 2021 amount includes a $37 million non-cash impairment charge associated with the sale of components of our San Juan Gathering System.  2020 amount includes a $38 million non-cash impairment charge associated with our South Texas gathering assets.

[4] 2021 and 2020 amounts include non-cash impairment charges of $113 million and $252 million, respectively, associated with our marine transportation business.