Supplemental Cash Flows Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash payments (receipts):
Interest, net of amounts capitalized	$ 326	$ 275
Income taxes, net	0	(60)
Common stock
Non-cash financing and investing activities:
Dividends declared but not paid	282	267
Preferred stock
Non-cash financing and investing activities:
Dividends declared but not paid	8	4
SCE
Cash payments (receipts):
Interest, net of amounts capitalized	292	253
Income taxes, net	0	(42)
Non-cash financing and investing activities:
Accrued capital expenditures	592	728
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	$ 4