Derivatives and Risk Management Activities - Offsetting Asset and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Derivative Asset Positions
Effect of Collateral Netting (Obligation to Return Cash)	$ (168)
Derivative Liability Positions
Effect of Collateral Netting (Right to Reclaim Cash)		$ 259
Commodity derivatives
Derivative Asset Positions
Effect of Collateral Netting (Obligation to Return Cash)	(168)
Derivative Liability Positions
Gross Position - Asset	311	100
Gross Position - Liability	(89)	(243)
Effect of Collateral Netting (Right to Reclaim Cash)		259
Net Carrying Value Presented on the Balance Sheet	54	116
Commodity derivatives | Other current assets
Derivative Asset Positions
Gross Position - Asset	300	90
Gross Position - Liability	(71)	(210)
Effect of Collateral Netting (Obligation to Return Cash)	(168)
Net Carrying Value Presented on the Balance Sheet	61	139
Derivative Liability Positions
Effect of Collateral Netting (Right to Reclaim Cash)		259
Commodity derivatives | Other long-term assets, net
Derivative Asset Positions
Gross Position - Asset	9	3
Gross Position - Liability	(5)	0
Net Carrying Value Presented on the Balance Sheet	4	3
Commodity derivatives | Other current liabilities
Derivative Liability Positions
Gross Position - Asset	2	4
Gross Position - Liability	(13)	(24)
Net Carrying Value Presented on the Balance Sheet	(11)	(20)
Commodity derivatives | Other long-term liabilities and deferred credits
Derivative Liability Positions
Gross Position - Asset	0	3
Gross Position - Liability	0	(9)
Net Carrying Value Presented on the Balance Sheet	$ 0	$ (6)