Consolidated Statements of Income (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Operating revenue	$ 2,632	$ 2,415
Fuel	73	77
Purchased power	780	615
Operation and maintenance	873	946
Depreciation, decommissioning and amortization	414	388
Total operating expenses	2,140	2,026
Operating income	492	389
Interest and other income	34	34
Interest expense	(131)	(126)
Other expenses	(11)	(10)
Income from continuing operations before income taxes	384	287
Income tax expense	98	91
Income from continuing operations	286	196
Income (loss) from discontinued operations, net of tax	12	(84)
Net income	298	112
Dividends on preferred and preference stock of utility	27	19
Net income attributable to common shareholders	271	93
Amounts attributable to common shareholders:
Income from continuing operations, net of tax	259	177
Income (loss) from discontinued operations, net of tax	12	(84)
Net income attributable to common shareholders	271	93
Basic earnings (loss) per common share attributable to Edison International common shareholders:
Weighted-average shares of common stock outstanding (in shares)	326	326
Continuing operations (in dollars per share)	$ 0.79	$ 0.54
Discontinued operations (in dollars per share)	$ 0.04	$ (0.26)
Total (in dollars per share)	$ 0.83	$ 0.28
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)	329	329
Continuing operations (in dollars per share)	$ 0.78	$ 0.54
Discontinued operations (in dollars per share)	$ 0.04	$ (0.26)
Total (in dollars per share)	$ 0.82	$ 0.28
Dividends declared per common share (in dollars per share)	$ 0.3375	$ 0.325
Southern California Edison
Operating revenue	2,629	2,412
Fuel	73	77
Purchased power	780	615
Operation and maintenance	785	851
Depreciation, decommissioning and amortization	414	389
Property and other taxes	79	83
Total operating expenses	2,131	2,015
Operating income	498	397
Interest and other income	32	33
Interest expense	(125)	(121)
Other expenses	(10)	(9)
Income from continuing operations before income taxes	395	300
Income tax expense	112	99
Net income	283	201
Dividends on preferred and preference stock of utility	27	19
Net income attributable to common shareholders	256	182
Amounts attributable to common shareholders:
Net income attributable to common shareholders	$ 256	$ 182