CONSOLIDATED STATEMENTS OF TOTAL EQUITY (USD $) In Millions, unless otherwise specified	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Non-controlling Interests
Balance at Dec. 31, 2008	$ 2,764	$ 64	$ 1,335	$ 1,085	$ 200	$ 80
Increase (Decrease) in Equity
Net income (loss)	194			197		(3)
Other comprehensive loss, net of tax	(122)				(122)
Payments to Edison International for stock purchases related to stock-based compensation	(2)			(2)
Other stock transactions, net	4		4
Cash contributions from noncontrolling interests	2					2
Cash distributions to noncontrolling interests	(3)					(3)
Balance at Dec. 31, 2009	2,837	64	1,339	1,280	78	76
Increase (Decrease) in Equity
Impact of consolidation and deconsolidation of variable interest entities (Note 3)	(61)			10		(71)
Net income (loss)	163			164		(1)
Other comprehensive loss, net of tax	(109)				(109)
Payments to Edison International for stock purchases related to stock-based compensation	(6)			(6)
Excess tax benefits related to stock option exercises	1		1
Other stock transactions, net	6		6
Purchase of noncontrolling interests	(10)		(10)
Balance at Dec. 31, 2010	2,821	64	1,336	1,448	(31)	4
Increase (Decrease) in Equity
Net income (loss)	(1,079)			(1,078)		(1)
Other comprehensive loss, net of tax	(63)				(63)
Payments to Edison International for stock purchases related to stock-based compensation	(5)			(5)
Excess tax benefits related to stock option exercises	2		2
Other stock transactions, net	4		4
Purchase of noncontrolling interests	(16)		(15)			(1)
Balance at Dec. 31, 2011	$ 1,664	$ 64	$ 1,327	$ 365	$ (94)	$ 2