Hedging Activities and Fair Value Measurements - Schedule of Asset Balance Sheet Offsetting (Details) - Commodity derivatives - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Offsetting Assets [Line Items]
Gross Amounts of Recognized Assets	$ 707	$ 460
Gross Amounts Offset in the Balance Sheet	0	0
Amounts of Assets Presented in the Balance Sheet	707	460
Financial Instruments	(679)	(362)
Cash Collateral Received	(27)	(98)
Cash Collateral Paid	0	0
Amounts That Would Have Been Presented On Net Basis	$ 1	$ 0