Supplemental Cash Flows Information (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash payments (receipts):
Interest, net of amounts capitalized	$ 788	$ 728
Income taxes, net	(49)	(87)
Common Stock
Non-cash financing and investing activities:
Dividends declared but not paid	267	252
Preferred stock
Non-cash financing and investing activities:
Dividends declared but not paid	6	0
SCE
Cash payments (receipts):
Interest, net of amounts capitalized	701	642
Income taxes, net	(49)	(87)
Non-cash financing and investing activities:
Accrued capital expenditures	649	567
SCE | Common Stock
Non-cash financing and investing activities:
Dividends declared but not paid	325	325
SCE | Preferred stock
Non-cash financing and investing activities:
Dividends declared but not paid	$ 6	$ 0