CONDENSED CONSOLIDATED BALANCE SHEETS (Parentheticals) (USD $) In Millions, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Property, plant and equipment related to VIE	$ 445	$ 466
Long-term debt related to VIE	327	335
Shareholders' equity:
Preferred stock, shares authorized	50	50
Preferred stock, shares issued	0	0
Common stock, shares authorized	750	750
Common stock, shares outstanding	244	242
San Diego Gas and Electric Company and Subsidiary [Member]
Property, plant and equipment related to VIE	445	466
Long-term debt related to VIE	$ 327	$ 335
Shareholders' equity:
Common stock, shares authorized	255	255
Common stock, shares outstanding	117	117
Southern California Gas Company [Member]
Shareholders' equity:
Common stock, shares authorized	100	100
Common stock, shares outstanding	91	91