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Acquisitions - Narrative (Details) $ in Millions		1 Months Ended				3 Months Ended		6 Months Ended
	Jan. 31, 2025 USD ($)	Jul. 31, 2025 USD ($)	Feb. 28, 2025 USD ($)	Jan. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)
Business Combination
Gain on investments in unconsolidated entities, net						$ 0	$ 0	$ 31	$ 0
Cheyenne Pipeline LLC
Business Combination
Ownership interest in unconsolidated entity (as a percent)			50.00%
BridgeTex Pipeline Company, LLC | Subsequent Event
Business Combination
Ownership interest in unconsolidated entity (as a percent)		40.00%
Permian JV
Business Combination
Ownership interest in the Permian JV (as a percent)				65.00%				65.00%
Ironwood Midstream Energy Partners II, LLC
Business Combination
Remaining weighted average life (in years)	16 years			16 years
Ironwood Midstream Energy Partners II, LLC | Finite-Lived Intangible Assets | Level 3 | Measurement Input, Discount Rate | Valuation Technique, Discounted Cash Flow
Business Combination
Business combination, measurement input	0.18
Ironwood Midstream Energy Partners II, LLC | Customer Relationships
Business Combination
Remaining weighted average life (in years)						16 years		16 years
EMG Medallion 2 Holdings
Business Combination
Acquisition amount, net to our interest in the Permian JV				$ 106
Other payments to acquire businesses					$ 16
Cheyenne Pipeline LLC
Business Combination
Ownership interests acquired percentage (as a percent)			50.00%
Gain on investments in unconsolidated entities, net			$ 31
Black Knight Midstream, LLC
Business Combination
Acquisition amount						$ 59
Acquisition amount, net to our interest in the Permian JV						$ 38
BridgeTex Pipeline Company, LLC | Subsequent Event
Business Combination
Acquisition amount		$ 180
Ownership interests acquired percentage (as a percent)		20.00%
EnCap Flatrock Midstream | Ironwood Midstream Energy Partners II, LLC
Business Combination
Acquisition amount	$ 481
The Energy & Minerals Group | EMG Medallion 2 Holdings | Permian JV
Business Combination
Acquisition amount				$ 163

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