Derivatives and Risk Management Activities - Offsetting Asset and Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Derivative Assets
Effect of Collateral Netting	$ (156)	$ (168)
Commodity derivatives
Derivative Assets
Effect of Collateral Netting	(156)	(168)
Derivative Liabilities
Gross Position - Asset	226	311
Gross Position - Liability	(63)	(89)
Net Carrying Value Presented on the Balance Sheet, Total	7	54
Other current assets | Commodity derivatives
Derivative Assets
Gross Position - Asset	221	300
Gross Position - Liability	(21)	(71)
Effect of Collateral Netting	(156)	(168)
Net Carrying Value Presented on the Balance Sheet	44	61
Other long-term assets, net | Commodity derivatives
Derivative Assets
Gross Position - Asset	3	9
Gross Position - Liability		(5)
Net Carrying Value Presented on the Balance Sheet	3	4
Other current liabilities | Commodity derivatives
Derivative Liabilities
Gross Position - Asset		2
Gross Position - Liability	(33)	(13)
Net Carrying Value Presented on the Balance Sheet	(33)	(11)
Other long-term liabilities and deferred credits | Commodity derivatives
Derivative Liabilities
Gross Position - Asset	2
Gross Position - Liability	(9)
Net Carrying Value Presented on the Balance Sheet	$ (7)	$ 0