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v3.25.2

ACQUISITIONS - Narrative (Details) shares in Millions, $ in Millions |  |  |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | --- | --- | ---
Jul. 22, 2025 USD ($) | May 28, 2025 USD ($) shares | Jan. 31, 2025 USD ($) shares | Jun. 30, 2025 USD ($) | Mar. 31, 2025 USD ($) | Jun. 30, 2025 USD ($) | Jun. 30, 2024 USD ($)
Business Combination [Line Items] |  |  |  |  |  |  |
Delaware Basin JV Acquisition (Note B) |  |  |  |  |  | $ 536 | $ 0
Delaware Basin JV Acquisition (Note B) |  |  |  | $ (479) |  |  |
EnLink Acquisition (Note B) |  |  |  |  | $ 0 |  |
Delaware Basin JV Acquisition |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |
Consolidation, consideration transferred |  | $ 927 |  |  |  |  |
Delaware Basin JV Acquisition (Note B) |  | $ 536 |  |  |  |  |
Consolidation, shares issued (in shares) | shares |  | 4.9 |  |  |  |  |
Consolidation, shares issued, value |  | $ 391 |  |  |  |  |
EnLink Acquisition |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |
Consolidation, shares issued (in shares) | shares |  |  | 41.0 |  |  |  |
Consolidation, shares issued, value |  |  | $ 4,000 |  |  |  |
Noncontrolling Interest in Variable Interest Entity |  |  | $ 4,378 |  |  |  |
Exchange ratio per Magellan unit |  |  | 0.1412 |  |  |  |
Transaction costs |  |  |  |  |  | 64 |
Noncontrolling Interest |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |
Delaware Basin JV Acquisition (Note B) |  |  |  | (678) |  |  |
EnLink Acquisition (Note B) |  |  |  |  | (4,378) |  |
Noncontrolling Interest | Delaware Basin JV Acquisition |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |
Delaware Basin JV Acquisition (Note B) |  |  |  | (678) |  |  |
Paid-in Capital |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |
Delaware Basin JV Acquisition (Note B) |  |  |  | 199 |  |  |
EnLink Acquisition (Note B) |  |  |  |  | $ 4,377 |  |
Paid-in Capital | Delaware Basin JV Acquisition |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |
Delaware Basin JV Acquisition (Note B) |  |  |  | $ 199 |  |  |
Subsequent Event | BridgeTex |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |
Payments to acquire equity method investments | $ 270 |  |  |  |  |  |
Equity method investment, ownership percentage | 60.00% |  |  |  |  |  |
Advisory Fees and Severance | EnLink Acquisition |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |
Transaction costs |  |  |  |  |  | 52 |
Noncash Compensation Expense | EnLink Acquisition |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |
Transaction costs |  |  |  |  |  | $ 12 |

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