Commitments and Contingencies (Operating Leases) (Details) (Southern California Edison, USD $)	Jun. 30, 2013
Southern California Edison
Lease Disclosures [Line Items]
Future minimum payments due, 2014	$ 197,000,000
Future minimum payments due, 2015	198,000,000
Future minimum payments due, 2016	202,000,000
Future minimum payments due, 2017	264,000,000
Future minimum payments due, 2018	$ 1,800,000,000

Amount of required minimum rental payments maturing in the next fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing in the fifth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing in the forth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing in the third fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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- Definition

Amount of required minimum rental payments maturing in the second fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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