Derivative Instruments (Balance Sheet) (Details) - SCE - Commodity derivative contracts - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Derivative Liabilities
Cash collateral posted for liability	$ 133	$ 121
Other Current Assets
Derivative Assets
Gross amounts recognized	42	94
Gross amounts offset in the consolidated balance sheets	(10)	(3)
Net amounts presented in the consolidated balance sheets	32	91
Derivative Liabilities
Cash collateral not offset against liability	56	47
Other long-term assets
Derivative Assets
Gross amounts recognized	5
Net amounts presented in the consolidated balance sheets	5
Other Current Liabilities
Derivative Liabilities
Gross amounts recognized	87	77
Gross amounts offset in the consolidated balance sheets	(10)	(3)
Cash collateral posted/received	$ (77)	$ (74)

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