CALIFORNIA UTILITIES' REGULATORY MATTERS - SCHEDULE OF REGULATORY AMOUNTS 2 (Details) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
San Diego Gas and Electric Company and Subsidiary [Member]
Wildfire Cost Recovery [Abstract]
Regulatory Recovery, Deductible Per Event	$ 5,000,000
Incremental Insurance Premiums Cost Recovery In GRC	67,000,000
Southern California Gas Company [Member]
Utility Incentive Awards [Line Items]
Recognized Gas Cost Incentive Mechanism Award		6,200,000
Unrecorded Gas Cost Incentive Mechanism Award	$ 5,400,000