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Investments in Unconsolidated Affiliates - Schedule of Investments in Unconsolidated Affiliates (Details) - USD ($) $ in Millions	1 Months Ended
	Jun. 30, 2025	Dec. 31, 2025	Dec. 31, 2024
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated affiliates		$ 2,185	$ 2,259
Transport 4, LLC (“Transport 4”)
Schedule of Equity Method Investments [Line Items]
Ownership interest	25.00%
Proceeds from sale of equity method investments	$ 8
Equity method investment, realized gain (loss) on disposal	$ 6
NGL Pipelines & Services
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated affiliates		$ 572	598
NGL Pipelines & Services | Venice Energy Service Company, L.L.C. (“VESCO”)
Schedule of Equity Method Investments [Line Items]
Ownership interest		13.10%
Investments in unconsolidated affiliates		$ 24	24
NGL Pipelines & Services | K/D/S Promix, L.L.C. (“Promix”)
Schedule of Equity Method Investments [Line Items]
Ownership interest		50.00%
Investments in unconsolidated affiliates		$ 21	22
NGL Pipelines & Services | Baton Rouge Fractionators LLC (“BRF”)
Schedule of Equity Method Investments [Line Items]
Ownership interest		32.20%
Investments in unconsolidated affiliates		$ 12	12
NGL Pipelines & Services | Skelly-Belvieu Pipeline Company, L.L.C. (“Skelly-Belvieu”)
Schedule of Equity Method Investments [Line Items]
Ownership interest		50.00%
Investments in unconsolidated affiliates		$ 21	25
NGL Pipelines & Services | Texas Express Pipeline LLC (“Texas Express”)
Schedule of Equity Method Investments [Line Items]
Ownership interest		35.00%
Investments in unconsolidated affiliates		$ 287	299
NGL Pipelines & Services | Texas Express Gathering LLC (“TEG”)
Schedule of Equity Method Investments [Line Items]
Ownership interest		45.00%
Investments in unconsolidated affiliates		$ 32	33
NGL Pipelines & Services | Front Range Pipeline LLC (“Front Range”)
Schedule of Equity Method Investments [Line Items]
Ownership interest		33.30%
Investments in unconsolidated affiliates		$ 175	183
Crude Oil Pipelines & Services
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated affiliates		$ 1,581	1,628
Crude Oil Pipelines & Services | Seaway Crude Holdings LLC (“Seaway”)
Schedule of Equity Method Investments [Line Items]
Ownership interest		50.00%
Investments in unconsolidated affiliates		$ 1,120	1,147
Crude Oil Pipelines & Services | Eagle Ford Pipeline LLC (“Eagle Ford Crude Oil Pipeline”)
Schedule of Equity Method Investments [Line Items]
Ownership interest		50.00%
Investments in unconsolidated affiliates		$ 351	368
Crude Oil Pipelines & Services | Eagle Ford Terminals Corpus Christi LLC (“Eagle Ford Corpus Christi”)
Schedule of Equity Method Investments [Line Items]
Ownership interest		50.00%
Investments in unconsolidated affiliates		$ 110	113
Natural Gas Pipelines & Services
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated affiliates		$ 31	30
Natural Gas Pipelines & Services | White River Hub, LLC (“White River Hub”)
Schedule of Equity Method Investments [Line Items]
Ownership interest		50.00%
Investments in unconsolidated affiliates		$ 16	16
Natural Gas Pipelines & Services | Old Ocean Pipeline, LLC (“Old Ocean”)
Schedule of Equity Method Investments [Line Items]
Ownership interest		50.00%
Investments in unconsolidated affiliates		$ 15	14
Petrochemical & Refined Products Services
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated affiliates		$ 1	3
Petrochemical & Refined Products Services | Baton Rouge Propylene Concentrator LLC (“BRPC”)
Schedule of Equity Method Investments [Line Items]
Ownership interest		30.00%
Investments in unconsolidated affiliates		$ 1	1
Petrochemical & Refined Products Services | Transport 4, LLC (“Transport 4”)
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated affiliates		$ 0	$ 2

X

- 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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Amount of gain (loss) on sale or disposal of an equity method investment.

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