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Goodwill (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Goodwill [Line Items]
Goodwill	$ 473	$ 473	$ 473
Operating segments | Pipeline
Goodwill [Line Items]
Goodwill	53	53	53
Operating segments | Gathering
Goodwill [Line Items]
Goodwill	$ 420	$ 420	$ 420

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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