Supplemental Cash Flows Information (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Cash payments (receipts):
Interest, net of amounts capitalized	$ 634	$ 438
Income taxes, net	0	(60)
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	8	5
SCE
Cash payments (receipts):
Interest, net of amounts capitalized	520	375
Income taxes, net	0	(42)
Non-cash financing and investing activities:
Accrued capital expenditures	489	609
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	$ 8	$ 5