CONDENSED CONSOLIDATED BALANCE SHEETS (Parentheticals) - USD ($) shares in Millions, $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Property, plant and equipment, net	$ 28,433	$ 28,039	[1]
Long-term debt	$ 12,975	$ 13,134	[1]
Shareholders' equity:
Preferred stock, shares authorized	50	50
Preferred stock, shares issued	0	0
Common stock, shares authorized	750	750
Common stock, shares outstanding	249	248
Otay Mesa VIE [Member]
Property, plant and equipment, net	$ 376	$ 383
Long-term debt	300	303
San Diego Gas and Electric Company [Member]
Property, plant and equipment, net	12,384	12,256	[1]
Long-term debt	$ 4,294	$ 4,455	[1]
Shareholders' equity:
Common stock, shares authorized	255	255
Common stock, shares outstanding	117	117
San Diego Gas and Electric Company [Member] | Otay Mesa VIE [Member]
Property, plant and equipment, net	$ 376	$ 383
Long-term debt	300	303
Southern California Gas Company [Member]
Property, plant and equipment, net	9,463	9,271	[1]
Long-term debt	$ 2,481	$ 2,481	[1]
Shareholders' equity:
Common stock, shares authorized	100	100
Common stock, shares outstanding	91	91

[1] Derived from audited financial statements.