Variable Interest Entities (Recovery Funding) (Details) - USD ($) $ in Millions	Apr. 30, 2023	Mar. 31, 2023	Dec. 31, 2022
Variable Interest Entity [Line Items]
Other current assets		$ 325	$ 397
Regulatory assets: non-current		8,151	8,181
Regulatory liabilities: current		425	964
Current portion of long-term debt		2,214	2,614
Other current liabilities		1,620	1,601
Long-term debt		29,442	27,025
SCE Recovery Funding LLC
Variable Interest Entity [Line Items]
Other current assets		63	45
Regulatory assets: non-current		827	834
Regulatory liabilities: current		39	33
Current portion of long-term debt		29	29
Other current liabilities		9	4
Long-term debt		809	809
SCE
Variable Interest Entity [Line Items]
Other current assets		315	384
Regulatory assets: non-current		8,151	8,181
Regulatory liabilities: current		425	964
Current portion of long-term debt		2,214	2,214
Other current liabilities		1,592	1,578
Long-term debt		25,965	24,044
SCE | SCE Recovery Funding LLC
Variable Interest Entity [Line Items]
Debt	$ 775		871
Regulatory assets: non-current		827	834
Long-term debt		$ 809	$ 809