Commitments and Contingencies (Undiscounted Future Minimum Expected Payments for Power Purchase Agreements) (Details) (Southern California Edison, USD $) In Millions, unless otherwise specified	Dec. 31, 2013
Renewable Energy Contracts
Power Purchase Agreements, Fiscal Year Maturity
2014	$ 796
2015	881
2016	936
2017	1,070
2018	1,091
Thereafter	17,806
Total future commitments	22,580
QF Power Purchase Agreements
Power Purchase Agreements, Fiscal Year Maturity
2014	312
2015	303
2016	245
2017	213
2018	170
Thereafter	186
Total future commitments	1,429
Other Purchase Agreements
Power Purchase Agreements, Fiscal Year Maturity
2014	1,033
2015	900
2016	701
2017	693
2018	571
Thereafter	1,992
Total future commitments	$ 5,890

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Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the fifth fiscal year following the latest fiscal year.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 440

-SubTopic 10

-Section 50

-Paragraph 4

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6394976&loc=d3e25336-109308

+ Details

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- Definition

Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the next fiscal year following the latest fiscal year.

+ References

+ Details

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- Definition

Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the four fiscal year following the latest fiscal year.

+ References

+ Details

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- Definition

Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the second fiscal year following the latest fiscal year.

+ References

+ Details

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- Definition

Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the third fiscal year following the latest fiscal year.

+ References

+ Details

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- Definition

Amount of the unrecorded obligation to transfer funds in the future for fixed or minimum amounts or quantities of goods or services at fixed or minimum prices (for example, as in take-or-pay contracts or throughput contracts).

+ References

+ Details

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- Definition

Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing after the fifth fiscal year following the latest fiscal year.

+ References

+ Details

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