Income Taxes (Tax Rate Reconciliation) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Effective Tax Rate
Income from continuing operations before income taxes	$ 1,221		$ 1,861		$ 1,668
Provision for income tax at federal statutory rate of 35%	427		652		584
Repair deductions	0	[1]	(231)	[1]	0	[1]
State tax, net of federal benefit	18		108		85
Property-related	(192)	[2]	(223)	[2]	(46)	[2]
Accumulated deferred income tax adjustments	0		(41)		(30)
Change related to uncertain tax positions	14		40		0
Other	(25)		(38)		(25)
Total income tax expense from continuing operations	242		267		568
Effective tax rate	19.80%		14.30%		34.10%
Earnings benefit from change in prior year tax deductions	231
Southern California Edison
Effective Tax Rate
Income from continuing operations before income taxes	1,279		1,874		1,745
Provision for income tax at federal statutory rate of 35%	448		656		611
Repair deductions	0	[1]	(231)	[1]	0	[1]
State tax, net of federal benefit	34		54		80
Property-related	(192)	[2]	(223)	[2]	(46)	[2]
Accumulated deferred income tax adjustments	0		(41)		(30)
Change related to uncertain tax positions	14		36		(3)
Other	(25)		(37)		(11)
Total income tax expense from continuing operations	$ 279		$ 214		$ 601
Effective tax rate	21.80%		11.40%		34.40%

[1] Edison International made a voluntary election in 2009 to change its tax accounting method for certain repair costs incurred on SCE's transmission, distribution and generation assets. Regulatory treatment for the 2009 – 2011 incremental repairs deductions taken after the 2009 tax accounting method change resulted in SCE recognizing a $231 million earnings benefit in 2012

[2] Includes incremental repair benefit recorded in 2013 and 2012. See discussion of repair deductions below.