XML 16 R48.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Derivative Instruments (Notional Values) (Details) (Southern California Edison, Electric Utility, Economic hedges) | Mar. 31, 2013 GWh | Dec. 31, 2012 GWh
--- | --- | ---
Electricity options, swaps and forwards (GWh) |  |
Derivatives |  |
Notional volumes of derivative instruments | 13,067 | 15,884
Natural gas options, swaps and forwards (Bcf) |  |
Derivatives |  |
Notional volumes of derivative instruments | 65 | 100
Congestion revenue rights (GWh) |  |
Derivatives |  |
Notional volumes of derivative instruments | 138,697 | 149,774
Tolling arrangements (GWh) |  |
Derivatives |  |
Notional volumes of derivative instruments | 100,810 | 101,485

X
- Definition Aggregate notional amount of derivative expressed in nonmonetary units. For example, the number of barrels specified in a fuel oil forward purchase contract. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
Name: | invest_DerivativeNonmonetaryNotionalAmount
Namespace Prefix: | invest_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_DerivativeLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration