Consolidated Statements of Changes in Equity (USD $) In Millions, unless otherwise specified		Total	Southern California Edison		Common Stock	Common Stock Southern California Edison	Additional Paid-in Capital Southern California Edison	Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) Southern California Edison	Retained Earnings	Retained Earnings Southern California Edison	Subtotal	Other Noncontrolling Interests	Preferred Stock and Preference Stock	Preferred Stock and Preference Stock Southern California Edison
Balance, at the beginning of the period at Dec. 31, 2010		$ 11,494	$ 9,207		$ 2,331	$ 2,168	$ 572	$ (76)	$ (25)	$ 8,328	$ 5,572	$ 10,583	$ 4	$ 907	$ 920
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		22	1,144		0	0	0	0	0	(37)	1,144	(37)	0	59	0
Other comprehensive income (loss)		(63)	1		0	0	0	(63)	1	0	0	(63)	0	0	0
Common stock dividends declared		(419)	(461)		0	0	0	0	0	(419)	(461)	(419)	0	0	0
Dividends declared on preferred and preference stock			(59)			0	0		0		(59)				0
Dividends, distributions to noncontrolling interests and other		(61)			0			0		0		0	(2)	(59)
Stock-based compensation and other		(20)	(10)		14	0	11	0	0	(34)	(21)	(20)	0	0	0
Noncash stock-based compensation and other		25	13		30	0	15	0	0	(4)	(2)	26	0	(1)	0
Purchase of noncontrolling interest		(15)			(15)			0		0		(15)	0	0
Issuance of preference stock		123	123		0	0	(2)	0	0	0		0	0	123	125
Balance, at the end of the period at Dec. 31, 2011		11,086	9,958		2,360	2,168	596	(139)	(24)	7,834	6,173	10,055	2	1,029	1,045
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	[1],[2]		201
Balance, at the end of the period at Mar. 31, 2012
Balance, at the beginning of the period at Dec. 31, 2011		11,086	9,958		2,360	2,168	596	(139)	(24)	7,834	6,173	10,055	2	1,029	1,045
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		(92)	1,660	[1],[2]	0	0	0	0		(183)	1,660	(183)	0	91
Other comprehensive income (loss)		52	(5)		0	0		52	(5)	0	0	52	0	0	0
Transfer of assets to Capistrano Wind Partners		(21)			(21)			0		0		(21)	0	0
Common stock dividends declared		(428)	(469)		0	0	0	0	0	(428)	(469)	(428)	0	0	0
Dividends declared on preferred and preference stock			(91)			0	0		0		(91)				0
Dividends, distributions to noncontrolling interests and other		(93)			0			0		0		0	(2)	(91)
Stock-based compensation and other		(80)	(57)		(3)	0	(13)	0	0	(77)	(44)	(80)	0	0	0
Noncash stock-based compensation and other		38	18		37	0	18	0	0	1	0	38	0	0	0
Issuance of preference stock		804	804		0	0	(21)	0	0	0	0	0	0	804	825
Redemption of preference stock		(75)	(75)		0	0	1	0	0	(1)	(1)	(1)	0	(74)	(75)
Balance, at the end of the period at Dec. 31, 2012		11,191	11,743		2,373	2,168	581	(87)	(29)	7,146	7,228	9,432	0	1,759	1,795
Balance, at the beginning of the period at Sep. 30, 2012
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	[1],[2]		858
Balance, at the end of the period at Dec. 31, 2012			11,743
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	[1],[2],[3]		283
Balance, at the end of the period at Mar. 31, 2013
Balance, at the beginning of the period at Dec. 31, 2012		11,191	11,743		2,373	2,168	581	(87)	(29)	7,146	7,228	9,432	0	1,759	1,795
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		1,015	1,000	[1],[2],[3]	0	0	0	0	0	915	1,000	915	0	100	0
Other comprehensive income (loss)		74	18		0	0	0	74	18	0	0	74	0	0	0
Common stock dividends declared		(446)	(486)		0	0	0	0	0	(446)	(486)	(446)	0	0	0
Dividends declared on preferred and preference stock			(100)			0	0		0		(100)				0
Dividends, distributions to noncontrolling interests and other		(100)			0			0		0		0	0	(100)
Stock-based compensation and other		(48)	(43)		5	0	1	0	0	(53)	(44)	(48)	0	0	0
Noncash stock-based compensation and other		18	19		25	0	15	0	0	(6)	4	19	0	(1)	0
Issuance of preference stock		387	387		0	0	(13)	0	0	0	0	0	0	387	400
Redemption of preference stock		(400)	(400)		0	0	8	0	0	(8)	(8)	(8)	0	(392)	(400)
Balance, at the end of the period at Dec. 31, 2013		11,691	12,138		2,403	2,168	592	(13)	(11)	7,548	7,594	9,938	0	1,753	1,795
Balance, at the beginning of the period at Sep. 30, 2013
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	[1],[2],[3]		283
Balance, at the end of the period at Dec. 31, 2013			$ 12,138

[1] During the fourth quarter of 2012, SCE corrected errors, primarily related to deferred taxes, that resulted in a net earnings benefit of $33 million which were not considered material to the current and prior period consolidated financial statements.

[2] During the fourth quarter of 2012, SCE implemented the 2012 GRC Decision which resulted in an earnings impact of approximately $500 million.

[3] During the second quarter of 2013, SCE recorded an impairment charge of $575 million ($365 million after tax) related to the permanent retirement of San Onofre Units 2 and 3.