Derivative Instruments (Balance Sheet) (Details) - SCE - Commodity derivative contracts - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Derivative Liabilities
Cash collateral posted for liability	$ 110
Other Current Assets
Derivative Assets
Gross amounts recognized	33	$ 459
Gross amounts offset in the consolidated balance sheets	(5)	(119)
Cash collateral posted/received	0	(99)
Net amounts presented in the consolidated balance sheets	28	241
Derivative Liabilities
Cash collateral not offset against liability	70
Other long-term assets
Derivative Assets
Gross amounts recognized	6
Net amounts presented in the consolidated balance sheets	6
Other Current Liabilities
Derivative Liabilities
Gross amounts recognized	45	120
Gross amounts offset in the consolidated balance sheets	(5)	(119)
Cash collateral posted/received	(40)
Net amounts presented in the consolidated balance sheets	$ 0	$ 1

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