CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Net income	$ 383		$ 323		$ 941		$ 768
Comprehensive income, net of income tax
Other Comprehensive Income (Loss), Net of Tax, Total	(371)	[1]	(215)	[1]	(371)	[1]	(215)	[1]
Preferred dividends of subsidiaries	0		(2)		(1)		(5)
Before-Tax Amount [Member]
Net income	419		418		1,156		1,054
Comprehensive income, net of income tax
Foreign currency translation adjustments	(100)		5		(141)		149
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	8		5		21		12
Other Comprehensive Income (Loss), Derivatives Qualifying As Hedges, Net of Tax	(4)		(5)		(24)		8
Other Comprehensive Income (Loss), Net of Tax, Total	(96)		5		(144)		169
Total Comprehensive Income	323		423		1,012		1,223
Preferred dividends of subsidiaries			(2)		(1)		(5)
Total comprehensive income, after preferred dividends of subsidiaries			421		1,011		1,218
Income Tax (Expense) Benefit [Member]
Net income	(71)		(117)		(291)		(327)
Comprehensive income, net of income tax
Foreign currency translation adjustments	0		0		0		0
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	(3)		(2)		(8)		(5)
Other Comprehensive Income (Loss), Derivatives Qualifying As Hedges, Net of Tax	1		1		9		(3)
Other Comprehensive Income (Loss), Net of Tax, Total	(2)		(1)		1		(8)
Total Comprehensive Income	(73)		(118)		(290)		(335)
Preferred dividends of subsidiaries			0		0		0
Total comprehensive income, after preferred dividends of subsidiaries			(118)		(290)		(335)
Net-of-Tax Amount [Member]
Net income	348		301		865		727
Comprehensive income, net of income tax
Foreign currency translation adjustments	(100)		5		(141)		149
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	5		3		13		7
Other Comprehensive Income (Loss), Derivatives Qualifying As Hedges, Net of Tax	(3)		(4)		(15)		5
Other Comprehensive Income (Loss), Net of Tax, Total	(98)		4		(143)		161
Total Comprehensive Income	250		305		722		888
Preferred dividends of subsidiaries			(2)		(1)		(5)
Total comprehensive income, after preferred dividends of subsidiaries			303		721		883
Noncontrolling Interests [Member]
Net income	35		22		76		41
Comprehensive income, net of income tax
Foreign currency translation adjustments	(11)		0		(12)		(24)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	0		0		0		0
Other Comprehensive Income (Loss), Derivatives Qualifying As Hedges, Net of Tax	3		(2)		2		16
Other Comprehensive Income (Loss), Net of Tax, Total	(8)		(2)		(10)		(8)
Total Comprehensive Income	27		20		66		33
Preferred dividends of subsidiaries			0		0		0
Total comprehensive income, after preferred dividends of subsidiaries			20		66		33
Total Equity [Member]
Net income	383		323		941		768
Comprehensive income, net of income tax
Foreign currency translation adjustments	(111)		5		(153)		125
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	5		3		13		7
Other Comprehensive Income (Loss), Derivatives Qualifying As Hedges, Net of Tax	0		(6)		(13)		21
Other Comprehensive Income (Loss), Net of Tax, Total	(106)		2		(153)		153
Total Comprehensive Income	277		325		788		921
Preferred dividends of subsidiaries			(2)		(1)		(5)
Total comprehensive income, after preferred dividends of subsidiaries			323		787		916
San Diego Gas and Electric Company and Subsidiary [Member]
Net income	169		139		399		293
Comprehensive income, net of income tax
Other Comprehensive Income (Loss), Net of Tax, Total	(7)	[1]	(9)	[1]	(7)	[1]	(9)	[1]
San Diego Gas and Electric Company and Subsidiary [Member] | Before-Tax Amount [Member]
Net income	222		218		596		439
Comprehensive income, net of income tax
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	1		2		3		3
Other Comprehensive Income (Loss), Derivatives Qualifying As Hedges, Net of Tax	0		0		0		0
Other Comprehensive Income (Loss), Net of Tax, Total	1		2		3		3
Total Comprehensive Income	223		220		599		442
San Diego Gas and Electric Company and Subsidiary [Member] | Income Tax (Expense) Benefit [Member]
Net income	(65)		(84)		(217)		(147)
Comprehensive income, net of income tax
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	0		(1)		(1)		(1)
Other Comprehensive Income (Loss), Derivatives Qualifying As Hedges, Net of Tax	0		0		0		0
Other Comprehensive Income (Loss), Net of Tax, Total	0		(1)		(1)		(1)
Total Comprehensive Income	(65)		(85)		(218)		(148)
San Diego Gas and Electric Company and Subsidiary [Member] | Net-of-Tax Amount [Member]
Net income	157		134		379		292
Comprehensive income, net of income tax
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	1		1		2		2
Other Comprehensive Income (Loss), Derivatives Qualifying As Hedges, Net of Tax	0		0		0		0
Other Comprehensive Income (Loss), Net of Tax, Total	1		1		2		2
Total Comprehensive Income	158		135		381		294
San Diego Gas and Electric Company and Subsidiary [Member] | Noncontrolling Interests [Member]
Net income	12		5		20		1
Comprehensive income, net of income tax
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	0		0		0		0
Other Comprehensive Income (Loss), Derivatives Qualifying As Hedges, Net of Tax	4		(1)		3		14
Other Comprehensive Income (Loss), Net of Tax, Total	4		(1)		3		14
Total Comprehensive Income	16		4		23		15
San Diego Gas and Electric Company and Subsidiary [Member] | Total Equity [Member]
Net income	169		139		399		293
Comprehensive income, net of income tax
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	1		1		2		2
Other Comprehensive Income (Loss), Derivatives Qualifying As Hedges, Net of Tax	4		(1)		3		14
Other Comprehensive Income (Loss), Net of Tax, Total	5		0		5		16
Total Comprehensive Income	174		139		404		309
Southern California Gas Company [Member]
Net income	98		102		257		267
Comprehensive income, net of income tax
Other Comprehensive Income (Loss), Net of Tax, Total	(16)	[1]	(17)	[1]	(16)	[1]	(17)	[1]
Southern California Gas Company [Member] | Before-Tax Amount [Member]
Net income	142				367		374
Comprehensive income, net of income tax
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	4				4
Other Comprehensive Income (Loss), Derivatives Qualifying As Hedges, Net of Tax							1
Other Comprehensive Income (Loss), Net of Tax, Total	4				4		1
Total Comprehensive Income	146		140		371		375
Southern California Gas Company [Member] | Income Tax (Expense) Benefit [Member]
Net income	(44)				(110)		(107)
Comprehensive income, net of income tax
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	(2)				(2)
Other Comprehensive Income (Loss), Derivatives Qualifying As Hedges, Net of Tax							0
Other Comprehensive Income (Loss), Net of Tax, Total	(2)				(2)		0
Total Comprehensive Income	(46)		(38)		(112)		(107)
Southern California Gas Company [Member] | Net-of-Tax Amount [Member]
Net income	98				257		267
Comprehensive income, net of income tax
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	2				2
Other Comprehensive Income (Loss), Derivatives Qualifying As Hedges, Net of Tax							1
Other Comprehensive Income (Loss), Net of Tax, Total	2				2		1
Total Comprehensive Income	$ 100		$ 102		$ 259		$ 268

[1] All amounts are net of income tax, if subject to tax, and exclude noncontrolling interests.