Schedule II - Valuation and Qualifying Accounts (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Movement in Valuation and Qualifying Accounts
Balance at Beginning of Period	$ 126.1		$ 79.6		$ 89.9
Charged to Costs and Expenses	55.3		93.2		50.2
Charged to Other Accounts	0		0		0
Deductions	111.4	[1]	46.7	[1]	60.5	[1]
Balance at End of Period	70.0		126.1		79.6
Deferred tax assets, loss and credit carryforwards	2,228		1,515
Allowance For Uncollectible Accounts From Customers
Movement in Valuation and Qualifying Accounts
Balance at Beginning of Period	46.6		42.0		36.1
Charged to Costs and Expenses	36.0		34.6		31.0
Charged to Other Accounts	0		0		0
Deductions	30.4		30.0		25.1
Balance at End of Period	52.2		46.6		42.0
Allowance For Uncollectible Accounts From Others
Movement in Valuation and Qualifying Accounts
Balance at Beginning of Period	79.5		37.6		53.8
Charged to Costs and Expenses	19.3		58.6		19.2
Charged to Other Accounts	0		0		0
Deductions	81.0		16.7		35.4	[2]
Balance at End of Period	17.8		79.5		37.6
Tax Valuation Allowance
Movement in Valuation and Qualifying Accounts
Balance at Beginning of Period	1,016.5	[3]	0
Charged to Costs and Expenses	363.5		1,016.5
Charged to Other Accounts	0	[3]	0	[3]
Deductions	0		0	[1]
Balance at End of Period	1,380.0		1,016.5	[3]
Southern California Edison
Movement in Valuation and Qualifying Accounts
Balance at Beginning of Period	74.9		75.0		85.5
Charged to Costs and Expenses	55.3		46.6		49.9
Charged to Other Accounts	0		0		0
Deductions	64.7	[1]	46.7	[1]	60.4	[1]
Balance at End of Period	65.5		74.9		75.0
Deferred tax assets, loss and credit carryforwards	427		125
Southern California Edison | Allowance For Uncollectible Accounts From Customers
Movement in Valuation and Qualifying Accounts
Balance at Beginning of Period	46.6		42.0		36.1
Charged to Costs and Expenses	36.0		34.6		31.0
Charged to Other Accounts	0		0		0
Deductions	30.4		30.0		25.1
Balance at End of Period	52.2		46.6		42.0
Southern California Edison | Allowance For Uncollectible Accounts From Others
Movement in Valuation and Qualifying Accounts
Balance at Beginning of Period	28.3		33.0		49.4
Charged to Costs and Expenses	19.3		12.0		18.9
Charged to Other Accounts	0		0		0
Deductions	34.3		16.7		35.3
Balance at End of Period	13.3		28.3		33.0
Write-off on termination of agreement			$ 23

[1] Accounts written off, net.

[2] In 2010, SCE recorded a $23 million reserve against an uncollectible receivable related to contract termination negotiations, which was written off during 2011.

[3] Edison International recorded deferred tax assets of $2.2 billion related to net operating losses and tax carryforwards that pertain to Edison International's consolidated or combined federal and state tax returns, including approximately $1.6 billion related to EME. Edison International continues to consolidate EME for federal and certain combined state tax returns. EME’s Plan of Reorganization, filed in December 2013 ("December Plan of Reorganization"), provides for the transfer of EIX’s ownership interest to the creditors, which would result in a tax deconsolidation of EME. Under federal and state tax regulations, the tax deconsolidation of EME will reduce the amounts net operating loss and tax credits carryforwards that Edison International would be eligible to use in future periods. As a result of the EME’s December Plan of Reorganization, that would result in a tax deconsolidation of EME, Edison International has recorded a $1.380 billion valuation allowance based on the estimated amount of such benefits as calculated under the applicable federal and state tax regulations as of December 31, 2013. The deferred income tax benefits recognized by Edison International less the valuation allowance for amounts that would no longer be available upon tax deconsolidation of EME was approximately $220 million.