Supplemental Cash Flows Information (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Cash payments (receipts):
Interest, net of amounts capitalized	$ 1,034	$ 788
Income taxes, net	0	(49)
Common stock
Non-cash financing and investing activities:
Dividends declared but not paid	283	267
Preferred stock
Non-cash financing and investing activities:
Dividends declared but not paid	9	6
SCE
Cash payments (receipts):
Interest, net of amounts capitalized	888	701
Income taxes, net	0	(49)
Non-cash financing and investing activities:
Accrued capital expenditures	584	649
SCE | Common stock
Non-cash financing and investing activities:
Dividends declared but not paid	350	325
SCE | Preferred stock
Non-cash financing and investing activities:
Dividends declared but not paid	$ 9	$ 6