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CALIFORNIA UTILITIES' REGULATORY MATTERS - SCHEDULE OF UTILITY PROJECTS (Details) (USD $)
In Millions, unless otherwise specified
Jun. 30, 2013
East County Substation [Member] | San Diego Gas and Electric Company and Subsidiary [Member]
 
Schedule Of Utility Projects [Line Items]  
Estimated Project Cost $ 435
Aliso Canyon Natural Gas Storage Compressor Replacement [Member] | Southern California Gas Company [Member]
 
Schedule Of Utility Projects [Line Items]  
Estimated Project Cost $ 200