SEGMENT INFORMATION (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013		Dec. 31, 2013
Segment Reporting Information, Profit (Loss) [Abstract]
Segment reporting information, Revenue	$ 2,678		$ 2,651		$ 5,473		$ 5,301
Segment reporting information, Percentage of Total Consolidated Revenues	100.00%		100.00%		100.00%		100.00%
Segment reporting information, Interest Expense	138		138		274		276
Segment reporting information, Interest Income	5		4		9		10
Segment reporting information, Depreciation and Amortization	288		247		574		542
Segment reporting information, Percentage of Consolidated Depreciation and Amortization	100.00%		100.00%		100.00%		100.00%
Segment reporting information, Income Tax Expense (Benefit)	93		32		220		210
Segment reporting information, Equity Earnings (Losses) Recorded Before Tax	23		8		40		18
Segment reporting information, Equity Earnings (Losses) Recorded Net of Tax	9		1		15		5
Segment reporting information, Earnings (Losses)	269		245		516		423
Segment reporting information, Percentage of Consolidated Earnings (Losses)	100.00%		100.00%		100.00%		100.00%
Segment Reporting Information, Additional Information [Abstract]
Segment reporting information, Expenditures for property plant and equipment					1,513		1,130
Segment reporting information, Percentage of Consolidated Expenditures for Property, Plant & Equipment					100.00%		100.00%
Segment reporting information, Assets	38,307				38,307				37,244	[1]
Segment reporting information, Percentage of Consolidated Assets	100.00%				100.00%				100.00%
Segment Reporting Information Investments In Equity Method Investees	1,677				1,677				1,485
S D G E Segment [Member]
Segment Reporting Information, Profit (Loss) [Abstract]
Segment reporting information, Revenue	1,063		1,064		2,050		2,003
Segment reporting information, Percentage of Total Consolidated Revenues	40.00%		40.00%		37.00%		38.00%
Segment reporting information, Interest Expense	51		49		101		97
Segment reporting information, Interest Income	0		0		0		1
Segment reporting information, Depreciation and Amortization	131		107		261		241
Segment reporting information, Percentage of Consolidated Depreciation and Amortization	45.00%		43.00%		45.00%		44.00%
Segment reporting information, Income Tax Expense (Benefit)	69		12		152		63
Segment reporting information, Earnings (Losses)	123		65	[2]	222		156	[2]
Segment reporting information, Percentage of Consolidated Earnings (Losses)	46.00%		26.00%		43.00%		37.00%
Segment Reporting Information, Additional Information [Abstract]
Segment reporting information, Expenditures for property plant and equipment					543		446
Segment reporting information, Percentage of Consolidated Expenditures for Property, Plant & Equipment					36.00%		40.00%
Segment reporting information, Assets	15,767				15,767				15,377
Segment reporting information, Percentage of Consolidated Assets	41.00%				41.00%				41.00%
Segment Reporting Information, Intersegment Revenues	2		2		5		4
So Cal Gas Segment [Member]
Segment Reporting Information, Profit (Loss) [Abstract]
Segment reporting information, Revenue	917		904		2,002		1,887
Segment reporting information, Percentage of Total Consolidated Revenues	34.00%		34.00%		37.00%		36.00%
Segment reporting information, Interest Expense	16		18		33		35
Segment reporting information, Depreciation and Amortization	107		80		212		180
Segment reporting information, Percentage of Consolidated Depreciation and Amortization	37.00%		33.00%		37.00%		33.00%
Segment reporting information, Income Tax Expense (Benefit)	28		45		66		69
Segment reporting information, Earnings (Losses)	80	[3]	118	[3]	158	[3]	164	[3]
Segment reporting information, Percentage of Consolidated Earnings (Losses)	30.00%		48.00%		31.00%		39.00%
Segment Reporting Information, Additional Information [Abstract]
Segment reporting information, Expenditures for property plant and equipment					500		340
Segment reporting information, Percentage of Consolidated Expenditures for Property, Plant & Equipment					33.00%		30.00%
Segment reporting information, Assets	9,294				9,294				9,147
Segment reporting information, Percentage of Consolidated Assets	24.00%				24.00%				25.00%
Segment Reporting Information, Intersegment Revenues	16		16		34		31
All Other Segments [Member]
Segment Reporting Information, Profit (Loss) [Abstract]
Segment reporting information, Interest Expense	57		59		115		122
Segment reporting information, Interest Income	1		0		1		(1)
Segment reporting information, Depreciation and Amortization	4		3		7		5
Segment reporting information, Percentage of Consolidated Depreciation and Amortization	1.00%		1.00%		1.00%		1.00%
Segment reporting information, Income Tax Expense (Benefit)	(24)		(41)		(45)		(6)
Segment reporting information, Earnings (Losses)	(32)		(22)		(76)		(106)
Segment reporting information, Percentage of Consolidated Earnings (Losses)	(12.00%)		(9.00%)		(15.00%)		(25.00%)
Segment Reporting Information, Additional Information [Abstract]
Segment reporting information, Expenditures for property plant and equipment					3		1
Segment reporting information, Percentage of Consolidated Expenditures for Property, Plant & Equipment					0.00%		0.00%
Segment reporting information, Assets	1,174				1,174				838
Segment reporting information, Percentage of Consolidated Assets	3.00%				3.00%				2.00%
Segment Reporting Information Investments In Equity Method Investees	73				73				73
Adjustments and Eliminations [Member]
Segment Reporting Information, Profit (Loss) [Abstract]
Segment reporting information, Revenue	(2)		(2)		(2)		(2)
Intercompany Eliminations Segment [Member]
Segment Reporting Information, Profit (Loss) [Abstract]
Segment reporting information, Interest Expense	(33)		(28)		(66)		(58)
Segment reporting information, Interest Income	(32)		(23)		(62)		(37)
Intersegment Revenues Segment [Member]
Segment Reporting Information, Profit (Loss) [Abstract]
Segment reporting information, Revenue	(121)	[4]	(97)	[4]	(243)	[4]	(195)	[4]
Segment reporting information, Percentage of Total Consolidated Revenues	(5.00%)		(3.00%)		(4.00%)		(4.00%)
Intersegment Receivables Segment [Member]
Segment Reporting Information, Additional Information [Abstract]
Segment reporting information, Assets	(2,460)				(2,460)				(3,314)
Segment reporting information, Percentage of Consolidated Assets	(6.00%)				(6.00%)				(9.00%)
Sempra South American Utilities Segment [Member]
Segment Reporting Information, Profit (Loss) [Abstract]
Segment reporting information, Revenue	390		371		768		755
Segment reporting information, Percentage of Total Consolidated Revenues	15.00%		14.00%		14.00%		14.00%
Segment reporting information, Interest Expense	9		5		17		12
Segment reporting information, Interest Income	3		3		6		8
Segment reporting information, Depreciation and Amortization	13		15		27		30
Segment reporting information, Percentage of Consolidated Depreciation and Amortization	5.00%		6.00%		5.00%		6.00%
Segment reporting information, Income Tax Expense (Benefit)	18		17		33		34
Segment reporting information, Equity Earnings (Losses) Recorded Net of Tax	0		(7)		(2)		(14)
Segment reporting information, Earnings (Losses)	42		34		77		71
Segment reporting information, Percentage of Consolidated Earnings (Losses)	15.00%		14.00%		15.00%		17.00%
Segment Reporting Information, Additional Information [Abstract]
Segment reporting information, Expenditures for property plant and equipment					89		66
Segment reporting information, Percentage of Consolidated Expenditures for Property, Plant & Equipment					6.00%		6.00%
Segment reporting information, Assets	3,546				3,546				3,531
Segment reporting information, Percentage of Consolidated Assets	9.00%				9.00%				10.00%
Segment Reporting Information Investments In Equity Method Investees	(5)				(5)				(3)
Sempra Mexico Segment [Member]
Segment Reporting Information, Profit (Loss) [Abstract]
Segment reporting information, Revenue	186		163		387		331
Segment reporting information, Percentage of Total Consolidated Revenues	7.00%		6.00%		7.00%		6.00%
Segment reporting information, Interest Expense	4		3		8		5
Segment reporting information, Interest Income	1		0		1		1
Segment reporting information, Depreciation and Amortization	15		15		31		31
Segment reporting information, Percentage of Consolidated Depreciation and Amortization	5.00%		6.00%		5.00%		6.00%
Segment reporting information, Income Tax Expense (Benefit)	12		2		24		28
Segment reporting information, Equity Earnings (Losses) Recorded Net of Tax	9		8		17		19
Segment reporting information, Earnings (Losses)	34		26		76		57
Segment reporting information, Percentage of Consolidated Earnings (Losses)	13.00%		11.00%		15.00%		13.00%
Segment Reporting Information, Additional Information [Abstract]
Segment reporting information, Expenditures for property plant and equipment					189		161
Segment reporting information, Percentage of Consolidated Expenditures for Property, Plant & Equipment					13.00%		14.00%
Segment reporting information, Assets	3,441				3,441				3,246
Segment reporting information, Percentage of Consolidated Assets	9.00%				9.00%				9.00%
Segment Reporting Information Investments In Equity Method Investees	392				392				379
Segment Reporting Information, Intersegment Revenues	23		23		45		45
Sempra Renewables Segment [Member]
Segment Reporting Information, Profit (Loss) [Abstract]
Segment reporting information, Revenue	9		30		15		51
Segment reporting information, Percentage of Total Consolidated Revenues	0.00%		1.00%		0.00%		1.00%
Segment reporting information, Interest Expense	1		9		1		17
Segment reporting information, Interest Income	0		4		0		7
Segment reporting information, Depreciation and Amortization	2		7		3		15
Segment reporting information, Percentage of Consolidated Depreciation and Amortization	1.00%		3.00%		1.00%		3.00%
Segment reporting information, Income Tax Expense (Benefit)	(13)		(9)		(19)		(17)
Segment reporting information, Equity Earnings (Losses) Recorded Before Tax	9		(3)		11		(2)
Segment reporting information, Earnings (Losses)	18		15		46		19
Segment reporting information, Percentage of Consolidated Earnings (Losses)	7.00%		6.00%		9.00%		4.00%
Segment Reporting Information, Additional Information [Abstract]
Segment reporting information, Expenditures for property plant and equipment					122		61
Segment reporting information, Percentage of Consolidated Expenditures for Property, Plant & Equipment					8.00%		5.00%
Segment reporting information, Assets	1,293				1,293				1,219
Segment reporting information, Percentage of Consolidated Assets	4.00%				4.00%				3.00%
Segment Reporting Information Investments In Equity Method Investees	874				874				707
Sempra Natural Gas Segment [Member]
Segment Reporting Information, Profit (Loss) [Abstract]
Segment reporting information, Revenue	236		218		496		471
Segment reporting information, Percentage of Total Consolidated Revenues	9.00%		8.00%		9.00%		9.00%
Segment reporting information, Interest Expense	33		23		65		46
Segment reporting information, Interest Income	32		20		63		31
Segment reporting information, Depreciation and Amortization	16		20		33		40
Segment reporting information, Percentage of Consolidated Depreciation and Amortization	6.00%		8.00%		6.00%		7.00%
Segment reporting information, Income Tax Expense (Benefit)	3		6		9		39
Segment reporting information, Equity Earnings (Losses) Recorded Before Tax	14		11		29		20
Segment reporting information, Earnings (Losses)	4		9		13		62
Segment reporting information, Percentage of Consolidated Earnings (Losses)	1.00%		4.00%		2.00%		15.00%
Segment Reporting Information, Additional Information [Abstract]
Segment reporting information, Expenditures for property plant and equipment					67		55
Segment reporting information, Percentage of Consolidated Expenditures for Property, Plant & Equipment					4.00%		5.00%
Segment reporting information, Assets	6,252				6,252				7,200
Segment reporting information, Percentage of Consolidated Assets	16.00%				16.00%				19.00%
Segment Reporting Information Investments In Equity Method Investees	343				343				329
Segment Reporting Information, Intersegment Revenues	$ 80		$ 56		$ 159		$ 115

[1] Derived from audited financial statements.

[2] After preferred dividends for 2013.

[3] After preferred dividends.

[4] Revenues for reportable segments include intersegment revenues of: $2 million, $16 million, $23 million and $80 million for the three months ended June 30, 2014; $5 million, $34 million, $45 million and $159 million for the six months ended June 30, 2014; $2 million, $16 million, $23 million and $56 million for the three months ended June 30, 2013; and $4 million, $31 million, $45 million and $115 million for the six months ended June 30, 2013 for SDG&E, SoCalGas, Sempra Mexico and Sempra Natural Gas, respectively.