Risk Management Activities - Schedule of Outstanding Financial Commodity and Other Derivative Instruments (Details) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Price Risk Derivative
Derivatives, Fair Value [Line Items]
Asset Derivatives - Current Portion	$ 46	$ 18
Asset Derivatives - Noncurrent Portion	3	0
Derivative Liability - Noncurrent Portion	0	2
Other Contract
Derivatives, Fair Value [Line Items]
Asset Derivatives - Current Portion	14	0
Asset Derivatives - Noncurrent Portion	$ 147	$ 31

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