CALIFORNIA UTILITIES' REGULATORY MATTERS - SCHEDULE OF REGULATORY AMOUNTS 1 (Details) (USD $)	3 Months Ended	6 Months Ended	12 Months Ended
	Mar. 31, 2013	Jun. 30, 2013	Dec. 31, 2012	Mar. 31, 2014
San Diego Gas and Electric Company and Subsidiary [Member]
General Rate Case [Line Items]
General Rate Case, Incremental Earnings Impact Recorded In Second Quarter 2013	$ 17,000,000		$ 52,000,000
General Rate Case, Cumulative Earnings Impact		69,000,000
General Rate Case, Regulatory Asset				284,000,000
General Rate Case, Noncurrent Regulatory Asset				122,000,000
Energy Resource Recovery Account [Line Items]
Authorized Energy Resource Recovery Revenue Requirement Trigger Increase Through Year End 2015				221,000,000
Authorized 2013 Energy Resource Recovery Revenue Requirement				987,700,000
Requested 2014 Energy Resource Recovery Revenue Requirement				1,230,000,000
Requested 2014 Energy Resource Recovery Revenue Requirement Increase				243,000,000
Southern California Gas Company [Member]
General Rate Case [Line Items]
General Rate Case, Incremental Earnings Impact Recorded In Second Quarter 2013	12,000,000		25,000,000
General Rate Case, Cumulative Earnings Impact		37,000,000
General Rate Case, Regulatory Asset				91,000,000
General Rate Case, Noncurrent Regulatory Asset				$ 39,000,000