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Property, Plant and Equipment, Impairments (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Asset Impairment Charges [Abstract] |  |  |  |
Impairment of property, plant and equipment |  | $ 20 | $ 41 | $ 218
Total asset impairment charges |  | 32 | 53 | 233
Proceeds from asset sales and other matters |  | 42 | 122 | 64
NGL Pipelines & Services [Member] |  |  |  |
Asset Impairment Charges [Abstract] |  |  |  |
Impairment of property, plant and equipment |  | 12 | 23 | 20
Crude Oil Pipelines & Services [Member] |  |  |  |
Asset Impairment Charges [Abstract] |  |  |  |
Impairment of property, plant and equipment |  | 1 | 3 | 15
Natural Gas Pipelines & Services [Member] |  |  |  |
Asset Impairment Charges [Abstract] |  |  |  |
Impairment of property, plant and equipment | [1] | 5 | 6 | 56
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
Petrochemical & Refined Products Services [Member] |  |  |  |
Asset Impairment Charges [Abstract] |  |  |  |
Impairment of property, plant and equipment | [2] | $ 2 | $ 9 | 127
Petrochemical & Refined Products Services [Member] | Marine transportation business [Member] |  |  |  |
Asset Impairment Charges [Abstract] |  |  |  |
Impairment of property, plant and equipment |  |  |  | 113
Impairment of intangible assets |  |  |  | 1
Total asset impairment charges |  |  |  | $ 114
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
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
[1] | 2021 amount includes a $37 million non-cash impairment charge associated with the sale of components of our San Juan Gathering System.
[2] | 2021 amount includes a non-cash impairment charge of $113 million associated with our marine transportation business.

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