CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Net income	$ 266	$ 178
Comprehensive income, net of income tax
Preferred dividends of subsidiaries	0	(2)
Before-Tax Amount [Member]
Net income	374	358
Comprehensive income, net of income tax
Foreign currency translation adjustments	(43)	10
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	5	5
Other Comprehensive Income (Loss), Derivatives Qualifying As Hedges, Net of Tax	(8)	(20)
Other Comprehensive Income (Loss), Net of Tax, Total	(46)	(5)
Total Comprehensive Income	328	353
Preferred dividends of subsidiaries		(2)
Total comprehensive income, after preferred dividends of subsidiaries		351
Income Tax (Expense) Benefit [Member]
Net income	(127)	(178)
Comprehensive income, net of income tax
Foreign currency translation adjustments	0	0
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	3	6
Other Comprehensive Income (Loss), Net of Tax, Total	1	4
Total Comprehensive Income	(126)	(174)
Preferred dividends of subsidiaries		0
Total comprehensive income, after preferred dividends of subsidiaries		(174)
Net-of-Tax Amount [Member]
Net income	247	180
Comprehensive income, net of income tax
Foreign currency translation adjustments	(43)	10
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	3	3
Other Comprehensive Income (Loss), Derivatives Qualifying As Hedges, Net of Tax	(5)	(14)
Other Comprehensive Income (Loss), Net of Tax, Total	(45)	(1)
Total Comprehensive Income	202	179
Preferred dividends of subsidiaries		(2)
Total comprehensive income, after preferred dividends of subsidiaries		177
Noncontrolling Interests [Member]
Net income	19	(2)
Comprehensive income, net of income tax
Foreign currency translation adjustments	(2)	(4)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	0	0
Other Comprehensive Income (Loss), Derivatives Qualifying As Hedges, Net of Tax	0	3
Other Comprehensive Income (Loss), Net of Tax, Total	(2)	(1)
Total Comprehensive Income	17	(3)
Preferred dividends of subsidiaries		0
Total comprehensive income, after preferred dividends of subsidiaries		(3)
Total Equity [Member]
Net income	266	178
Comprehensive income, net of income tax
Foreign currency translation adjustments	(45)	6
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	3	3
Other Comprehensive Income (Loss), Derivatives Qualifying As Hedges, Net of Tax	(5)	(11)
Other Comprehensive Income (Loss), Net of Tax, Total	(47)	(2)
Total Comprehensive Income	219	176
Preferred dividends of subsidiaries		(2)
Total comprehensive income, after preferred dividends of subsidiaries		174
San Diego Gas and Electric Company and Subsidiary [Member]
Net income	101	81
San Diego Gas and Electric Company and Subsidiary [Member] | Before-Tax Amount [Member]
Net income	182	143
Comprehensive income, net of income tax
Other Comprehensive Income (Loss), Derivatives Qualifying As Hedges, Net of Tax		0
Other Comprehensive Income (Loss), Net of Tax, Total		0
Total Comprehensive Income		143
San Diego Gas and Electric Company and Subsidiary [Member] | Income Tax (Expense) Benefit [Member]
Net income	(83)	(51)
Comprehensive income, net of income tax
Other Comprehensive Income (Loss), Derivatives Qualifying As Hedges, Net of Tax		0
Other Comprehensive Income (Loss), Net of Tax, Total		0
Total Comprehensive Income		(51)
San Diego Gas and Electric Company and Subsidiary [Member] | Net-of-Tax Amount [Member]
Net income	99	92
Comprehensive income, net of income tax
Other Comprehensive Income (Loss), Derivatives Qualifying As Hedges, Net of Tax		0
Other Comprehensive Income (Loss), Net of Tax, Total		0
Total Comprehensive Income		92
San Diego Gas and Electric Company and Subsidiary [Member] | Noncontrolling Interests [Member]
Net income	2	(11)
Comprehensive income, net of income tax
Other Comprehensive Income (Loss), Derivatives Qualifying As Hedges, Net of Tax		3
Other Comprehensive Income (Loss), Net of Tax, Total		3
Total Comprehensive Income		(8)
San Diego Gas and Electric Company and Subsidiary [Member] | Total Equity [Member]
Net income	101	81
Comprehensive income, net of income tax
Other Comprehensive Income (Loss), Derivatives Qualifying As Hedges, Net of Tax		3
Other Comprehensive Income (Loss), Net of Tax, Total		3
Total Comprehensive Income		84
Southern California Gas Company [Member]
Net income	78	46
Southern California Gas Company [Member] | Before-Tax Amount [Member]
Net income	116	70
Southern California Gas Company [Member] | Income Tax (Expense) Benefit [Member]
Net income	(38)	(24)
Southern California Gas Company [Member] | Net-of-Tax Amount [Member]
Net income	$ 78	$ 46