Derivatives and Risk Management Activities - Offsetting Asset and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Derivative Assets
Effect of Collateral Netting (Liability)	$ 72
Effect of Collateral Netting (Asset)		$ (13)
Commodity derivatives
Derivative Assets
Effect of Collateral Netting (Liability)	72
Effect of Collateral Netting (Asset)		(13)
Derivative Liabilities
Gross Position - Asset	42	158
Gross Position - Liability	(118)	(158)
Net Carrying Value Presented on the Balance Sheet	(4)	(13)
Commodity derivatives | Other current assets
Derivative Assets
Gross Position - Asset	36	153
Gross Position - Liability	(74)	(79)
Effect of Collateral Netting (Liability)	72
Effect of Collateral Netting (Asset)		(13)
Net Carrying Value Presented on the Balance Sheet	34	61
Commodity derivatives | Other long-term assets, net
Derivative Assets
Gross Position - Asset		3
Net Carrying Value Presented on the Balance Sheet	0	3
Commodity derivatives | Other current liabilities
Derivative Liabilities
Gross Position - Asset	4	1
Gross Position - Liability	(28)	(64)
Net Carrying Value Presented on the Balance Sheet	(24)	(63)
Commodity derivatives | Other long-term liabilities and deferred credits
Derivative Liabilities
Gross Position - Asset	2	1
Gross Position - Liability	(16)	(15)
Net Carrying Value Presented on the Balance Sheet	$ (14)	$ (14)