Consolidated Statements of Income (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011		Dec. 31, 2010	Dec. 31, 2009
Electric utility	$ 10,574		$ 9,980	$ 9,962
Competitive power generation	2,186		2,429	2,399
Total operating revenue	12,760		12,409	12,361
Fuel	1,166		1,172	1,517
Purchased power	2,989		2,930	2,751
Operations and maintenance	4,776		4,612	4,387
Depreciation, decommissioning and amortization	1,737		1,522	1,418
Asset impairments, lease terminations and other	1,772		47	890
Total operating expenses	12,440		10,283	10,963
Operating income	320		2,126	1,398
Interest and dividend income	37		31	32
Equity in income from unconsolidated affiliates - net	86		106	42
Other income	156		148	171
Interest expense	(808)		(703)	(732)
Other expenses	(55)		(51)	(57)
Income (loss) from continuing operations before income taxes	(264)		1,657	854
Income tax expense (benefit)	(288)		354	(98)
Income from continuing operations	24		1,303	952
Income (loss) from discontinued operations, net of tax	(3)		4	(7)
Net income	21		1,307	945
Dividends on preferred and preference stock of utility	59		52	51
Other noncontrolling interests	(1)		(1)	45
Net income (loss) attributable to Edison International common shareholders	(37)		1,256	849
Amounts attributable to Edison International common shareholders:
Income (loss) from continuing operations, net of tax	(34)		1,252	856
Income (loss) from discontinued operations, net of tax	(3)		4	(7)
Net income (loss) attributable to Edison International common shareholders	$ (37)		$ 1,256	$ 849
Basic earnings (loss) per common share attributable to Edison International common shareholders:
Weighted-average shares of common stock outstanding	326		326	326
Continuing operations (in dollars per share)	$ (0.10)		$ 3.83	$ 2.61
Discontinued operations (in dollars per share)	$ (0.01)		$ 0.01	$ (0.02)
Total (in dollars per share)	$ (0.11)		$ 3.84	$ 2.59
Diluted earnings (loss) per common share attributable to Edison International common shareholders:
Weighted-average shares of common stock outstanding, including effect of dilutive securities (in shares)	326		329	327
Continuing operations (in dollars per share)	$ (0.10)	[1]	$ 3.81	$ 2.60
Discontinued operations (in dollars per share)	$ (0.01)	[1]	$ 0.01	$ (0.02)
Total (in dollars per share)	$ (0.11)	[1]	$ 3.82	$ 2.58
Dividends declared per common share (in dollars per share)	$ 1.285	[1]	$ 1.265	$ 1.245

[1] Due to a loss for the three months and year ended December 31, 2011, there are no incremental shares in the diluted computation because such shares would be considered antidilutive.