Supplemental Cash Flows Information (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash payments (receipts):
Interest, net of amounts capitalized	$ 438	$ 408
Income taxes, net	(60)	(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	5	0
SCE
Cash payments (receipts):
Interest, net of amounts capitalized	375	345
Income taxes, net	(42)	(87)
Non-cash financing and investing activities:
Accrued capital expenditures	609	478
SCE | Common Stock
Non-cash financing and investing activities:
Dividends declared but not paid	325	0
SCE | Preferred stock
Non-cash financing and investing activities:
Dividends declared but not paid	$ 5	$ 0