Derivative Instruments (Balance Sheet) (Details) - SCE - Commodity derivative contracts - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Derivative Liabilities
Cash collateral posted for liability	$ 137	$ 121
Other Current Assets
Derivative Assets
Gross amounts recognized	83	94
Gross amounts offset in the consolidated balance sheets	(3)	(3)
Cash collateral posted/received	0
Net amounts presented in the consolidated balance sheets	80	91
Derivative Liabilities
Cash collateral not offset against liability	46	47
Other Current Liabilities
Derivative Liabilities
Gross amounts recognized	94	77
Gross amounts offset in the consolidated balance sheets	(3)	(3)
Cash collateral posted/received	(91)	$ (74)
Net amounts presented in the consolidated balance sheets	$ 0

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