Supplemental Cash Flows Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Cash payments (receipts):
Interest, net of amounts capitalized	$ 1,588	$ 1,401	$ 1,001
Income taxes, net	51	0	(49)
Common Stock
Non-cash financing and investing activities:
Dividends declared but not paid	318	299	282
Preferred Stock
Non-cash financing and investing activities:
Dividends declared but not paid	0	9	8
Pollution-control Bonds Redeemed At 2.625%
Non-cash financing and investing activities:
Debt exchange	0	$ (135)	0
Interest rate on debt (as a percent)		2.625%
Pollution-control Bonds Remarketed At 4.50%
Non-cash financing and investing activities:
Debt exchange	0	$ (135)	0
Interest rate on debt (as a percent)		4.50%
SCE
Cash payments (receipts):
Interest, net of amounts capitalized	1,306	$ 1,155	864
Income taxes, net	78	0	(49)
Non-cash financing and investing activities:
Accrued capital expenditures	644	680	652
SCE | Common Stock
Non-cash financing and investing activities:
Dividends declared but not paid	430	360	350
SCE | Preferred Stock
Non-cash financing and investing activities:
Dividends declared but not paid	0	9	8
SCE | Pollution-control Bonds Redeemed At 2.625%
Non-cash financing and investing activities:
Debt exchange	0	(135)	0
SCE | Pollution-control Bonds Remarketed At 4.50%
Non-cash financing and investing activities:
Debt exchange	$ 0	$ (135)	$ 0