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DESCRIPTION OF THE BUSINESS AND BASIS OF PRESENTATION - Narrative (Details) $ in Millions | 9 Months Ended |
--- | --- | ---
Sep. 30, 2025 USD ($) segment | Dec. 31, 2024 USD ($) pipeline
Related Party Transaction [Line Items] |  |
Number of segments | segment | 2 |
Amount by which the carrying amounts of equity method investments exceeds share of underlying equity in the net assets | $ | $ 324 | $ 336
Stonewall VIE |  |
Related Party Transaction [Line Items] |  |
VIE ownership percentage | 85.00% |
South Romeo VIE |  |
Related Party Transaction [Line Items] |  |
VIE ownership percentage | 50.00% |
Midwest Pipeline Acquisition |  |
Related Party Transaction [Line Items] |  |
Number of pipelines acquired | pipeline |  | 3

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