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- Definition

Consolidation, Consideration Transferred

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- Definition

Consolidation, Consideration Transferred, Equity Interest, Share Issued, Value

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Consolidation, Equity Interest Issued or Issuable, Number of Shares

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- Definition

Noncontrolling Interest, Consideration Transferred, Equity Interests Issued and Issuable, Entity Shares Issued Per Acquiree Share

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Decrease in noncontrolling interest (for example, but not limited to, redeeming or purchasing the interests of noncontrolling shareholders, issuance of shares (interests) by the non-wholly owned subsidiary to the parent entity for other than cash, and a buyback of shares (interest) by the non-wholly owned subsidiary from the noncontrolling interests).

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Portion of equity (net assets) in a variable interest entity (VIE) not attributable, directly or indirectly, to the parent entity. That is, this is the portion of equity in a VIE that is attributable to the noncontrolling interest (previously referred to as minority interest).

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The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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Amount of cash outflow to a noncontrolling interest. Includes, but not limited to, reduction of noncontrolling interest ownership. Excludes dividends paid to the noncontrolling interest.

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Value of stock issued pursuant to acquisitions during the period.

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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