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Investments and Noncontrolling Interests (Narrative) (Details) - USD ($) $ in Millions | Dec. 31, 2025 | Dec. 31, 2024
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Natural Gas & NGL Services [Member] |  |
Schedule of Equity Method Investments [Line Items] |  |
Basis difference | $ 124 | $ 198
Basis difference, not amortized | 0 | 31
Crude Oil and Products Logistics [Member] |  |
Schedule of Equity Method Investments [Line Items] |  |
Basis difference | 283 | 291
Basis difference, not amortized | $ 167 | $ 167

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