Financial Instruments - Energy Segments Derivatives (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Derivative [Line Items]
Derivative liabilities	$ 595	$ 756
Collateral for derivative positions	5	3
Energy
Derivative [Line Items]
Asset derivatives, Gross	(3)	(13)
Liability derivatives, Gross	(3)	(13)
Derivative asset	7	4
Commodity contracts | Energy
Derivative [Line Items]
Asset derivatives, Gross	10	17
Liability derivatives, Gross	$ 3	$ 13