Derivatives and Risk Management Activities - Offsetting Asset and Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Derivative Assets
Effect of Collateral Netting	$ 256	$ 259
Commodity Derivatives
Derivative Assets
Effect of Collateral Netting	256	259
Derivative Liabilities
Gross Position - Asset	171	100
Gross Position - Liability	(274)	(243)
Net Carrying Value Presented on the Balance Sheet, Total	153	116
Other current assets | Commodity Derivatives
Derivative Assets
Gross Position - Asset	137	90
Gross Position - Liability	(208)	(210)
Effect of Collateral Netting	256	259
Net Carrying Value Presented on the Balance Sheet	185	139
Other long-term assets, net | Commodity Derivatives
Derivative Assets
Gross Position - Asset	11	3
Net Carrying Value Presented on the Balance Sheet	11	3
Other current liabilities | Commodity Derivatives
Derivative Liabilities
Gross Position - Asset	14	4
Gross Position - Liability	(50)	(24)
Net Carrying Value Presented on the Balance Sheet	(36)	(20)
Other long-term liabilities and deferred credits | Commodity Derivatives
Derivative Liabilities
Gross Position - Asset	9	3
Gross Position - Liability	(16)	(9)
Net Carrying Value Presented on the Balance Sheet	$ (7)	$ (6)