SEGMENT INFORMATION (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013		Dec. 31, 2013
Segment Reporting Information, Profit (Loss) [Abstract]
Segment reporting information, Revenue	$ 2,795		$ 2,650
Segment reporting information, Percentage of Total Consolidated Revenues	100.00%		100.00%
Segment reporting information, Interest Expense	136		138
Segment reporting information, Interest Income	4		6
Segment reporting information, Depreciation and Amortization	286		295
Segment reporting information, Percentage of Consolidated Depreciation and Amortization	100.00%		100.00%
Segment reporting information, Income Tax Expense (Benefit)	127		178
Segment reporting information, Equity Earnings (Losses) Recorded Before Tax	17		10
Segment reporting information, Equity Earnings (Losses) Recorded Net of Tax	6		4
Segment reporting information, Earnings (Losses)	247		178
Segment reporting information, Percentage of Consolidated Earnings (Losses)	100.00%		100.00%
Segment Reporting Information, Additional Information [Abstract]
Segment reporting information, Expenditures for property plant and equipment	801		531
Segment reporting information, Percentage of Consolidated Expenditures for Property, Plant & Equipment	100.00%		100.00%
Segment reporting information, Assets	37,484				37,244	[1]
Segment reporting information, Percentage of Consolidated Assets	100.00%				100.00%
Segment Reporting Information Investments In Equity Method Investees	1,545				1,485
S D G E Segment [Member]
Segment Reporting Information, Profit (Loss) [Abstract]
Segment reporting information, Revenue	987		939
Segment reporting information, Percentage of Total Consolidated Revenues	35.00%		35.00%
Segment reporting information, Interest Expense	50		48
Segment reporting information, Interest Income	0		1
Segment reporting information, Depreciation and Amortization	130		134
Segment reporting information, Percentage of Consolidated Depreciation and Amortization	45.00%		45.00%
Segment reporting information, Income Tax Expense (Benefit)	83		51
Segment reporting information, Earnings (Losses)	99	[2]	91	[2]
Segment reporting information, Percentage of Consolidated Earnings (Losses)	40.00%		51.00%
Segment Reporting Information, Additional Information [Abstract]
Segment reporting information, Expenditures for property plant and equipment	294		237
Segment reporting information, Percentage of Consolidated Expenditures for Property, Plant & Equipment	37.00%		45.00%
Segment reporting information, Assets	15,634				15,377
Segment reporting information, Percentage of Consolidated Assets	42.00%				41.00%
Segment Reporting Information, Intersegment Revenues	3		2
So Cal Gas Segment [Member]
Segment Reporting Information, Profit (Loss) [Abstract]
Segment reporting information, Revenue	1,085		983
Segment reporting information, Percentage of Total Consolidated Revenues	39.00%		37.00%
Segment reporting information, Interest Expense	17		17
Segment reporting information, Depreciation and Amortization	105		100
Segment reporting information, Percentage of Consolidated Depreciation and Amortization	37.00%		34.00%
Segment reporting information, Income Tax Expense (Benefit)	38		24
Segment reporting information, Earnings (Losses)	78	[3]	46	[3]
Segment reporting information, Percentage of Consolidated Earnings (Losses)	32.00%		26.00%
Segment Reporting Information, Additional Information [Abstract]
Segment reporting information, Expenditures for property plant and equipment	260		179
Segment reporting information, Percentage of Consolidated Expenditures for Property, Plant & Equipment	33.00%		34.00%
Segment reporting information, Assets	9,331				9,147
Segment reporting information, Percentage of Consolidated Assets	25.00%				25.00%
Segment Reporting Information, Intersegment Revenues	18		15
All Other Segments [Member]
Segment Reporting Information, Profit (Loss) [Abstract]
Segment reporting information, Interest Expense	58		63
Segment reporting information, Interest Income	0		(1)
Segment reporting information, Depreciation and Amortization	3		2
Segment reporting information, Percentage of Consolidated Depreciation and Amortization	1.00%		1.00%
Segment reporting information, Income Tax Expense (Benefit)	(21)		35
Segment reporting information, Earnings (Losses)	(44)		(84)
Segment reporting information, Percentage of Consolidated Earnings (Losses)	(18.00%)		(47.00%)
Segment Reporting Information, Additional Information [Abstract]
Segment reporting information, Expenditures for property plant and equipment	1		0
Segment reporting information, Percentage of Consolidated Expenditures for Property, Plant & Equipment	0.00%		0.00%
Segment reporting information, Assets	921				838
Segment reporting information, Percentage of Consolidated Assets	2.00%				2.00%
Segment Reporting Information Investments In Equity Method Investees	73				73
Intercompany Eliminations Segment [Member]
Segment Reporting Information, Profit (Loss) [Abstract]
Segment reporting information, Interest Expense	(33)		(30)
Segment reporting information, Interest Income	(30)		(14)
Intersegment Revenues Segment [Member]
Segment Reporting Information, Profit (Loss) [Abstract]
Segment reporting information, Revenue	(122)	[4]	(98)	[4]
Segment reporting information, Percentage of Total Consolidated Revenues	(4.00%)		(4.00%)
Intersegment Receivables Segment [Member]
Segment Reporting Information, Additional Information [Abstract]
Segment reporting information, Assets	(3,889)				(3,314)
Segment reporting information, Percentage of Consolidated Assets	(10.00%)				(9.00%)
Sempra South American Utilities Segment [Member]
Segment Reporting Information, Profit (Loss) [Abstract]
Segment reporting information, Revenue	378		384
Segment reporting information, Percentage of Total Consolidated Revenues	14.00%		15.00%
Segment reporting information, Interest Expense	8		7
Segment reporting information, Interest Income	3		5
Segment reporting information, Depreciation and Amortization	14		15
Segment reporting information, Percentage of Consolidated Depreciation and Amortization	5.00%		5.00%
Segment reporting information, Income Tax Expense (Benefit)	15		17
Segment reporting information, Equity Earnings (Losses) Recorded Net of Tax	(2)		(7)
Segment reporting information, Earnings (Losses)	35		37
Segment reporting information, Percentage of Consolidated Earnings (Losses)	14.00%		21.00%
Segment Reporting Information, Additional Information [Abstract]
Segment reporting information, Expenditures for property plant and equipment	32		22
Segment reporting information, Percentage of Consolidated Expenditures for Property, Plant & Equipment	4.00%		4.00%
Segment reporting information, Assets	3,523				3,531
Segment reporting information, Percentage of Consolidated Assets	9.00%				10.00%
Segment Reporting Information Investments In Equity Method Investees	(5)				(3)
Sempra Mexico Segment [Member]
Segment Reporting Information, Profit (Loss) [Abstract]
Segment reporting information, Revenue	201		168
Segment reporting information, Percentage of Total Consolidated Revenues	7.00%		6.00%
Segment reporting information, Interest Expense	4		2
Segment reporting information, Interest Income	0		1
Segment reporting information, Depreciation and Amortization	16		16
Segment reporting information, Percentage of Consolidated Depreciation and Amortization	6.00%		5.00%
Segment reporting information, Income Tax Expense (Benefit)	12		26
Segment reporting information, Equity Earnings (Losses) Recorded Net of Tax	8		11
Segment reporting information, Earnings (Losses)	42		31
Segment reporting information, Percentage of Consolidated Earnings (Losses)	17.00%		17.00%
Segment Reporting Information, Additional Information [Abstract]
Segment reporting information, Expenditures for property plant and equipment	75		61
Segment reporting information, Percentage of Consolidated Expenditures for Property, Plant & Equipment	9.00%		11.00%
Segment reporting information, Assets	3,337				3,246
Segment reporting information, Percentage of Consolidated Assets	9.00%				9.00%
Segment Reporting Information Investments In Equity Method Investees	384				379
Segment Reporting Information, Intersegment Revenues	22		22
Sempra Renewables Segment [Member]
Segment Reporting Information, Profit (Loss) [Abstract]
Segment reporting information, Revenue	6		21
Segment reporting information, Percentage of Total Consolidated Revenues	0.00%		1.00%
Segment reporting information, Interest Expense	0		8
Segment reporting information, Interest Income	0		3
Segment reporting information, Depreciation and Amortization	1		8
Segment reporting information, Percentage of Consolidated Depreciation and Amortization	0.00%		3.00%
Segment reporting information, Income Tax Expense (Benefit)	(6)		(8)
Segment reporting information, Equity Earnings (Losses) Recorded Before Tax	2		1
Segment reporting information, Earnings (Losses)	28		4
Segment reporting information, Percentage of Consolidated Earnings (Losses)	11.00%		2.00%
Segment Reporting Information, Additional Information [Abstract]
Segment reporting information, Expenditures for property plant and equipment	99		6
Segment reporting information, Percentage of Consolidated Expenditures for Property, Plant & Equipment	12.00%		1.00%
Segment reporting information, Assets	1,135				1,219
Segment reporting information, Percentage of Consolidated Assets	3.00%				3.00%
Segment Reporting Information Investments In Equity Method Investees	757				707
Sempra Natural Gas Segment [Member]
Segment Reporting Information, Profit (Loss) [Abstract]
Segment reporting information, Revenue	260		253
Segment reporting information, Percentage of Total Consolidated Revenues	9.00%		10.00%
Segment reporting information, Interest Expense	32		23
Segment reporting information, Interest Income	31		11
Segment reporting information, Depreciation and Amortization	17		20
Segment reporting information, Percentage of Consolidated Depreciation and Amortization	6.00%		7.00%
Segment reporting information, Income Tax Expense (Benefit)	6		33
Segment reporting information, Equity Earnings (Losses) Recorded Before Tax	15		9
Segment reporting information, Earnings (Losses)	9		53
Segment reporting information, Percentage of Consolidated Earnings (Losses)	4.00%		30.00%
Segment Reporting Information, Additional Information [Abstract]
Segment reporting information, Expenditures for property plant and equipment	40		26
Segment reporting information, Percentage of Consolidated Expenditures for Property, Plant & Equipment	5.00%		5.00%
Segment reporting information, Assets	7,492				7,200
Segment reporting information, Percentage of Consolidated Assets	20.00%				19.00%
Segment Reporting Information Investments In Equity Method Investees	336				329
Segment Reporting Information, Intersegment Revenues	$ 79		$ 59

[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: $3 million, $18 million, $22 million and $79 million for the three months ended March 31, 2014; $2 million, $15 million, $22 million and $59 million for the three months ended March 31, 2013 for SDG&E, SoCalGas, Sempra Mexico and Sempra Natural Gas, respectively.