CALIFORNIA UTILITIES' REGULATORY MATTERS - SCHEDULE OF REGULATORY AMOUNTS 2 (Details) (USD $)	3 Months Ended
	Jun. 30, 2013	Mar. 31, 2012
San Diego Gas and Electric Company and Subsidiary [Member] | Loss from Catastrophes [Member]
Wildfire [Line Items]
Potential Impact On Earnings	$ 190,000,000
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	5,800,000
Approved Gas Cost Incentive Mechanism Award, Unrecorded	$ 5,400,000