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Gains and Losses on Divestitures, Impairments and Other Write-downs (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2021 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Impairment of Goodwill, Long-lived assets and equity investments [Line Items] |  |  |  |
Pre-tax losses (gains) on divestitures, impairments and other write-downs, net |  | $ 52 | $ (32) | $ 1,535
Impairments of long-lived assets |  |  |  | $ 1,634
Impairment of long-lived assets (Extensible) |  |  |  | Gain (Loss) on Sale of Assets and Asset Impairment Charges
Gain on sale of interest in equity investment |  | 0 | 0 | $ (206)
Natural Gas Pipelines |  |  |  |
Impairment of Goodwill, Long-lived assets and equity investments [Line Items] |  |  |  |
Impairments of long-lived assets |  | 0 | 0 | 1,600
(Gains) losses on divestitures of long-lived assets |  | (10) | (10) | (1)
Products Pipelines |  |  |  |
Impairment of Goodwill, Long-lived assets and equity investments [Line Items] |  |  |  |
(Gains) losses on divestitures of long-lived assets |  | 0 | (12) | 0
Terminals |  |  |  |
Impairment of Goodwill, Long-lived assets and equity investments [Line Items] |  |  |  |
Impairments of long-lived assets |  | 0 | 0 | 34
(Gains) losses on divestitures of long-lived assets |  | (1) | (9) | 2
CO2 |  |  |  |
Impairment of Goodwill, Long-lived assets and equity investments [Line Items] |  |  |  |
(Gains) losses on divestitures of long-lived assets |  | (1) | (1) | (8)
Other |  |  |  |
Impairment of Goodwill, Long-lived assets and equity investments [Line Items] |  |  |  |
(Gains) losses on divestitures of long-lived assets |  | (3) | 0 | (3)
NGPL Holdings | Natural Gas Pipelines |  |  |  |
Impairment of Goodwill, Long-lived assets and equity investments [Line Items] |  |  |  |
Gain on sale of interest in equity investment |  | 0 | 0 | (206)
Ruby Pipeline Holding Company LLC | Natural Gas Pipelines | Notes Receivable |  |  |  |
Impairment of Goodwill, Long-lived assets and equity investments [Line Items] |  |  |  |
Impairments of equity investments | $ 117 | 0 | 0 | 117
Double Eagle Pipeline LLC |  |  |  |
Impairment of Goodwill, Long-lived assets and equity investments [Line Items] |  |  |  |
Impairments of equity investments |  | 67 |  |
Double Eagle Pipeline LLC | Products Pipelines |  |  |  |
Impairment of Goodwill, Long-lived assets and equity investments [Line Items] |  |  |  |
Impairments of equity investments |  | $ 67 | $ 0 | $ 0

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- Definition [Line Items] for Impairment of Goodwill, Long-lived assets and equity investments [Table] + References No definition available. + Details
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- Definition This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 323 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481664/323-10-45-1 + Details
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