Variable Interest Entities (Recovery Funding) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Feb. 28, 2022	Dec. 31, 2021	Feb. 28, 2021
Variable Interest Entity [Line Items]
Other current assets	$ 397		$ 249
Regulatory assets: non-current	8,181		7,660
Regulatory liabilities: current	964		603
Current portion of long-term debt	2,614		1,077
Other current liabilities	1,601		1,667
Long-term debt	27,025		24,170
SCE Recovery Funding LLC
Variable Interest Entity [Line Items]
Other current assets	45		19
Regulatory assets: non-current	834		325
Regulatory liabilities: current	33		14
Current portion of long-term debt	29		14
Other current liabilities	4		1
Long-term debt	809		314
SCE
Variable Interest Entity [Line Items]
Other current assets	384		222
Regulatory assets: non-current	8,181		7,660
Regulatory liabilities: current	964		603
Current portion of long-term debt	2,214		377
Other current liabilities	1,578		1,631
Long-term debt	24,044		21,733
SCE | SCE Recovery Funding LLC
Variable Interest Entity [Line Items]
Regulatory assets: non-current	834		325
Long-term debt	$ 809		$ 314
SCE | SCE Recovery Funding LLC | Series 2022-A senior secured recovery bonds
Variable Interest Entity [Line Items]
Debt		$ 533
SCE | SCE Recovery Funding LLC | Series 2021-A senior secured recovery bonds
Variable Interest Entity [Line Items]
Debt				$ 338