SIGNIFICANT ACCOUNTING POLICIES AND OTHER FINANCIAL DATA (Tables)

12 Months Ended

Dec. 31, 2011

Schedule Of Regulatory Balancing Accounts [Abstract]

Schedule Of Regulatory Balancing Accounts

SUMMARY OF REGULATORY BALANCING ACCOUNTS AT DECEMBER 31
(Dollars in millions)
		Sempra Energy
		Consolidated				SDG&E				SoCalGas
		2011		2010		2011		2010		2011		2010
Overcollected		$	709	$	733	$	419	$	443	$	290	$	290
Undercollected			(642)		(492)		(457)		(382)		(185)		(110)
Net payable (receivable)(1)		$	67	$	241	$	(38)	$	61	$	105	$	180
(1)	At December 31, 2011, the net receivable at SDG&E and the net payable at SoCalGas are shown separately
	on Sempra Energy's Consolidated Balance Sheet.

Schedule Of Regulatory Assets (Liabilities) [Abstract]

Schedule Of Regulatory Assets (Liabilities)

REGULATORY ASSETS (LIABILITIES) AT DECEMBER 31
(Dollars in millions)
		2011		2010
SDG&E
Fixed-price contracts and other derivatives		$	258	$	299
Costs related to wildfire litigation			594		364
Deferred taxes recoverable in rates			570		502
Pension and other postretirement benefit obligations			309		279
Removal obligations(1)			(1,462)		(1,409)
Unamortized loss on reacquired debt, net			20		23
Environmental costs			17		17
Legacy meters			91		―
Other			43		38
Total SDG&E			440		113
SoCalGas
Pension and other postretirement benefit obligations			808		586
Employee benefit costs			66		59
Removal obligations(1)			(1,075)		(1,208)
Deferred taxes refundable in rates			(87)		(138)
Unamortized loss on reacquired debt, net			20		23
Environmental costs			21		18
Workers’ compensation			44		41
Other			(5)		(6)
Total SoCalGas			(208)		(625)
Other Sempra Energy
Mobile Gas			(5)		(16)
Ecogas			3		9
Total Other Sempra Energy			(2)		(7)
Total Sempra Energy Consolidated		$	230	$	(519)
(1)	Related to obligations discussed below in “Asset Retirement Obligations.”

NET REGULATORY ASSETS (LIABILITIES) AS PRESENTED ON THE CONSOLIDATED BALANCE SHEETS AT DECEMBER 31
(Dollars in millions)
		2011						2010
		Sempra						Sempra
		Energy						Energy
		Consolidated		SDG&E		SoCalGas		Consolidated		SDG&E		SoCalGas
Current regulatory assets		$	89	$	78	$	9	$	90	$	71	$	12
Noncurrent regulatory assets			2,780		1,824		945		2,167		1,451		709
Current regulatory liabilities(1)			(1)		―		―		(8)		―		―
Noncurrent regulatory liabilities			(2,638)		(1,462)		(1,162)		(2,768)		(1,409)		(1,346)
Total		$	230	$	440	$	(208)	$	(519)	$	113	$	(625)
(1)	Included in Other Current Liabilities.

Schedule Of Receivables Collection Allowances [Abstract]

Schedule Of Receivables Collection Allowances

COLLECTION ALLOWANCES
(Dollars in millions)
	Years ended December 31,
	2011		2010		2009
Sempra Energy Consolidated
Allowances for collection of receivables at January 1	$	29	$	27	$	29
Provisions for uncollectible accounts		20		22		25
Write-offs of uncollectible accounts		(20)		(20)		(27)
Allowances for collection of receivables at December 31	$	29	$	29	$	27
SDG&E
Allowances for collection of receivables at January 1	$	5	$	4	$	6
Provisions for uncollectible accounts		8		7		8
Write-offs of uncollectible accounts		(7)		(6)		(10)
Allowances for collection of receivables at December 31	$	6	$	5	$	4
SoCalGas
Allowances for collection of receivables at January 1	$	14	$	16	$	18
Provisions for uncollectible accounts		8		8		12
Write-offs of uncollectible accounts		(10)		(10)		(14)
Allowances for collection of receivables at December 31	$	12	$	14	$	16

Schedule Of Inventory Balances [Abstract]

Schedule Of Inventory Balances

INVENTORY BALANCES AT DECEMBER 31
(Dollars in millions)
	Sempra Energy
	Consolidated				SDG&E				SoCalGas
	2011		2010		2011		2010		2011		2010
Natural gas	$	195	$	152	$	6	$	5	$	128	$	86
Materials and supplies		151		106		76		66		23		19
Total	$	346	$	258	$	82	$	71	$	151	$	105

Schedule Of Property Plant And Equipment By Major Functional Category [Abstract]

Schedule Of Property Plant And Equipment By Major Functional Category

PROPERTY, PLANT AND EQUIPMENT BY MAJOR FUNCTIONAL CATEGORY
(Dollars in millions)
		Property, Plant				Depreciation rates for
		and Equipment at				years ended
		December 31,				December 31,
		2011		2010		2011		2010		2009
SDG&E:
Natural gas operations		$	1,349	$	1,280	3.15	%	3.00	%	2.84	%
Electric distribution			4,894		4,700	4.13		4.06		3.97
Electric transmission			1,938		1,795	2.74		2.70		2.67
Electric generation(1)			2,166		1,737	4.92		4.30		3.84
Other electric(2)			604		666	8.26		8.19		8.50
Construction work in progress			2,052		1,069	NA		NA		NA
Total SDG&E			13,003		11,247
SoCalGas:
Natural gas operations(3)			10,055		9,376	3.62		3.54		3.50
Other non-utility			129		126	1.62		1.74		1.41
Construction work in progress			381		322	NA		NA		NA
Total SoCalGas			10,565		9,824
Sempra Global and parent(4):						Estimated Useful Lives
Land and land rights			292		194	25 to 50 years(5)
Machinery and equipment:
Utility electric distribution operations			1,267		―	10 to 50 years
Generating plants			1,389		1,668	4 to 35 years
LNG terminals			2,059		2,049	3 to 50 years
Pipelines and storage			1,510		1,375	10 to 50 years
Other			168		97	2 to 50 years
Construction work in progress			849		428			N/A
Other			201		205	3 to 50 years
			7,735		6,016
Total Sempra Energy Consolidated		$	31,303	$	27,087
(1)	Includes capital lease assets of $183 million and $182 million at December 31, 2011 and 2010, respectively.
(2)	Includes capital lease assets of $26 million at both December 31, 2011 and 2010.
(3)	Includes capital lease assets of $33 million at both December 31, 2011 and 2010.
(4)	December 31, 2011 balances include $163 million and $126 million of utility plant, primarily pipelines and other distribution assets, at Mobile Gas and Ecogas, respectively. December 31, 2010 balances include $156 million and $137 million of utility plant, primarily pipelines and other distribution assets, at Mobile Gas and Ecogas, respectively.
(5)	Estimated useful lives are for land rights.

Schedule Of Accumulated Depreciation And Decommissioning Amounts [Abstract]

Schedule Of Accumulated Depreciation And Decommissioning Amounts

ACCUMULATED DEPRECIATION AND DECOMMISSIONING AMOUNTS
(Dollars in millions)
		December 31,
		2011		2010
SDG&E:
Accumulated depreciation and decommissioning of utility plant in service:
Electric(1)		$	2,387	$	2,152
Natural gas			576		542
Total SDG&E			2,963		2,694
SoCalGas:
Accumulated depreciation of natural gas utility plant in service(2)			3,863		3,702
Accumulated depreciation – other non-utility			102		100
Total SoCalGas			3,965		3,802
Sempra Global and parent:
Accumulated depreciation – other non-utility(3)			759		715
Accumulated depreciation of utility electric distribution operations			44		―
			803		715
Total Sempra Energy Consolidated		$	7,731	$	7,211
(1)	Includes accumulated depreciation for assets under capital lease of $16 million and $7 million at December 31, 2011 and 2010, respectively.
(2)	Includes accumulated depreciation for assets under capital lease of $22 million and $14 million at December 31, 2011 and 2010, respectively.
(3)	December 31, 2011 balances include $15 million and $28 million of accumulated depreciation for utility plant at Mobile Gas and Ecogas, respectively. December 31, 2010 balances include $9 million and $29 million of accumulated depreciation for utility plant at Mobile Gas and Ecogas, respectively.

Schedule Of Capitalized Financing Costs [Abstract]

Schedule Of Capitalized Financing Costs

CAPITALIZED FINANCING COSTS
(Dollars in millions)
	Years ended December 31,
	2011		2010		2009
Sempra Energy Consolidated:
AFUDC related to debt	$	40	$	24	$	15
AFUDC related to equity		99		57		39
Other capitalized financing costs		26		33		73
Total Sempra Energy Consolidated	$	165	$	114	$	127
SDG&E:
AFUDC related to debt	$	33	$	18	$	10
AFUDC related to equity		80		43		29
Other capitalized financing costs		―		―		4
Total SDG&E	$	113	$	61	$	43
SoCalGas:
AFUDC related to debt	$	7	$	6	$	5
AFUDC related to equity		19		14		10
Other capitalized financing costs		―		―		1
Total SoCalGas	$	26	$	20	$	16

Schedule Of Goodwill [Abstract]

Schedule Of Goodwill

GOODWILL
(Dollars in millions)
			Sempra
			Pipelines &		Parent
			Storage		and Other		Total
Balance as of December 31, 2009		$	62	$	6	$	68
Acquisition of Mexican pipeline and natural gas infrastructure assets and other			19		―		19
Balance as of December 31, 2010			81		6		87
Acquisition of Chilquinta Energía and Luz del Sur			975		―		975
Foreign currency translation(1)			(26)		―		(26)
Balance at December 31, 2011		$	1,030	$	6	$	1,036
(1)	We record the offset of this fluctuation to other comprehensive income.

Schedule Of Acquired Finite Lived Intangible Assets By Major Class [Abstract]

Schedule Of Other Intangible Assets

OTHER INTANGIBLE ASSETS
(Dollars in millions)
	Amortization period	December 31,		December 31,
	(years)	2011		2010
Storage rights	46	$	138	$	138
Development rights	50		322		322
Other	11 years to indefinite		21		16
			481		476
Less accumulated amortization:
Storage rights			(21)		(14)
Development rights			(10)		(7)
Other			(2)		(2)
			(33)		(23)
Total		$	448	$	453

Schedule Of Variable Interest Entities [Abstract]

Schedule Of Variable Interest Entities

AMOUNTS ASSOCIATED WITH OTAY MESA VIE
(Dollars in millions)
			December 31,
			2011		2010
Cash and cash equivalents			$	12	$	10
Restricted cash				7		6
Accounts receivable - trade				7		―
Accounts receivable - other				―		(1)
Inventories				2		2
Other				1		1
Total current assets				29		18
Restricted cash				22		―
Sundry				6		6
Property, plant and equipment, net				494		516
Total assets			$	551	$	540
Current portion of long-term debt			$	10	$	10
Fixed-price contracts and other derivatives				16		17
Other				9		1
Total current liabilities				35		28
Long-term debt				345		355
Fixed-price contracts and other derivatives				65		41
Deferred credits and other				4		3
Other noncontrolling interest				102		113
Total liabilities and equity			$	551	$	540
	Years ended December 31,
	2011		2010		2009
Operating revenues
Electric	$	―	$	(1)	$	(1)
Natural gas		―		(3)		―
Total operating revenues		―		(4)		(1)
Operating expenses
Cost of electric fuel and purchased power		(72)		(82)		(13)
Operation and maintenance		19		20		7
Depreciation and amortization		22		26		7
Total operating expenses		(31)		(36)		1
Operating income (loss)		31		32		(2)
Other (expense) income, net		(1)		(34)		27
Interest expense		(11)		(14)		(1)
Income (loss) before income taxes/Net income (loss)		19		(16)		24
(Earnings) losses attributable to noncontrolling interest		(19)		16		(24)
Earnings	$	―	$	―	$	―

Schedule Of Changes In Asset Retirement Obligations [Abstract]

Schedule Of Changes In Asset Retirement Obligations

CHANGES IN ASSET RETIREMENT OBLIGATIONS
(Dollars in millions)
		Sempra Energy
		Consolidated				SDG&E				SoCalGas
		2011		2010		2011		2010		2011		2010
Balance as of January 1(1)		$	1,468	$	1,313	$	623	$	590	$	803	$	676
Accretion expense			82		77		38		37		41		38
Liabilities incurred			12		10		3		―		―		―
Payments			(1)		(17)		―		―		―		(2)
Revisions(2,3)			364		85		34		(4)		331		91
Balance as of December 31(1)		$	1,925	$	1,468	$	698	$	623	$	1,175	$	803
(1)	The current portions of the obligations are included in Other Current Liabilities on the Consolidated Balance Sheets.
(2)	The increase in obligations at SDG&E and SoCalGas for revisions in 2011 resulted from changes in assets in service and a decrease in the discount rate from 5.13 percent in 2010 to 4.00 percent in 2011, based on the risk-free rate plus an estimated credit spread.
(3)	The increase in obligations at SoCalGas for revisions in 2010 resulted from changes in assets in service and a decrease in the discount rate from 5.54 percent in 2009 to 5.13 percent in 2010, based on the risk-free rate plus an estimated credit spread.

Schedule Of Accumulated Other Comprehensive Income [Abstract]

Schedule Of Accumulated Other Comprehensive Income

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) AND
ASSOCIATED INCOME TAX EXPENSE (BENEFIT)
(Dollars in millions)
	Accumulated Other Comprehensive Income (Loss)				Income Tax Expense (Benefit)
	2011		2010		2011		2010
Sempra Energy Consolidated
Foreign currency translation loss	$	(359)	$	(229)	$	(3)	$	―
Financial instruments		(31)		(15)		(22)		(12)
Unrealized gains on available-for-sale securities		―		1		―		1
Unamortized net actuarial loss		(100)		(88)		(68)		(60)
Unamortized prior service credit		1		1		1		1
Balance as of December 31	$	(489)	$	(330)	$	(92)	$	(70)
SDG&E
Unamortized net actuarial loss	$	(11)	$	(11)	$	(8)	$	(8)
Unamortized prior service credit		1		1		1		1
Balance as of December 31	$	(10)	$	(10)	$	(7)	$	(7)
SoCalGas
Unamortized net actuarial loss	$	(6)	$	(5)	$	(4)	$	(4)
Unamortized prior service credit		1		1		―		1
Financial instruments		(16)		(18)		(11)		(12)
Balance as of December 31	$	(21)	$	(22)	$	(15)	$	(15)

Schedule Of Noncontrolling Interests [Abstract]

Schedule Of Noncontrolling Interests

OWNERSHIP INTERESTS HELD BY OTHERS AS OF DECEMBER 31
(Dollars in millions)
		Percent Ownership Held by Others			2011		2010
Bay Gas(1)		9	%	$	17	$	15
Southern Gas Transmission(1)		49			1		1
Liberty		25			9		(18)
Tecsur(2)		10			4		-
Luz del Sur(2)		20			216		-
Chilquinta Energía(2)		15 - 43			34		-
Otay Mesa VIE (at SDG&E)		100			102		113
Total Sempra Energy				$	383	$	111
(1)	Part of Sempra Pipelines & Storage’s Sempra Midstream business.
(2)	Controlling interest acquired in 2011.

Schedule Of Utilities Revenues [Abstract]

Schedule Of Utilities Revenues

TOTAL UTILITIES REVENUES AT SEMPRA ENERGY CONSOLIDATED(1)
(Dollars in millions)
		Years ended December 31,
		2011		2010		2009
Natural gas revenues		$	4,489	$	4,491	$	4,002
Electric revenues			3,833		2,528		2,419
Total		$	8,322	$	7,019	$	6,421
(1)	Excludes intercompany revenues.

Schedule Of Foreign Currency Translation Adjustments To Equity Method Investments [Abstract]

Schedule Of Foreign Currency Translation Adjustments To Equity Method Investments [Text Block]

			Upward (downward) adjustment to investments
Investment		Currency	2011(1)		2010		2009
Chilquinta Energía		Chilean Peso	$	(10)	$	34	$	85
Luz del Sur		Peruvian Nuevo Sol		―		5		13
(1)	As discussed in Note 3, the cumulative foreign currency translation adjustment balances totaling $54 million in Accumulated Other Comprehensive Income (Loss) as of April 6, 2011 were reclassified to net income as a result of the gain on the remeasurement of our equity method investments in Chilquinta Energía and Luz del Sur during the second quarter of 2011.

Schedule Of Foreign Currency Transaction Gain (Loss) [Abstract]

Schedule Of Foreign Currency Transaction Gain (Loss) [Text Block]

	Years ended December 31,
(Dollars in millions)	2011		2010		2009
Currency transaction gain	$	11	$	4	$	3

Schedule Of Due To And From Affiliates [Abstract]

Schedule Of Amounts Due To and From Affiliates at SDG&E, PE and SoCalGas

AMOUNTS DUE TO AND FROM AFFILIATES AT SDG&E AND SOCALGAS
(Dollars in millions)
		December 31,
		2011		2010
SDG&E
Current:
Due from SoCalGas		$	2	$	11
Due from various affiliates			65		1
		$	67	$	12
Due to Sempra Energy		$	14	$	16
Income taxes due from Sempra Energy(1)		$	97	$	25
SoCalGas
Current:
Due from Sempra Energy		$	23	$	60
Due from various affiliates			17		―
Due from RBS Sempra Commodities			―		3
		$	40	$	63
Due to SDG&E		$	2	$	11
Income taxes due from (to) Sempra Energy(1)		$	17	$	(3)
(1)	SDG&E and SoCalGas are included in the consolidated income tax return of Sempra Energy and are allocated income tax expense from Sempra Energy in an amount equal to that which would result from the companies’ having always filed a separate return.

Schedule Of Revenues From Affiliates [Abstract]

Schedule Of Revenues From Unconsolidated Affiliates at the Utility Businesses

REVENUES FROM UNCONSOLIDATED AFFILIATES AT UTILITY BUSINESSES
(Dollars in millions)
	Years ended December 31,
	2011		2010		2009
SDG&E	$	7	$	8	$	8
SoCalGas		53		44		43

Schedule Of Transactions With Joint Venture [Abstract]

Schedule Of Amounts Recorded For Transactions with RBS Sempra Commodities

AMOUNTS RECORDED FOR TRANSACTIONS WITH RBS SEMPRA COMMODITIES
(Dollars in millions)
		Years ended December 31,
		2011(1)		2010			2009
Revenues:
SoCalGas		$	―	$	14	$	13
Sempra Generation			4		19		11
Sempra Pipelines & Storage			―		―		3
Sempra LNG			40		247		60
Cost of natural gas:
SDG&E		$	―	$	3	$	4
SoCalGas			―		36		19
Sempra Generation			30		87		1
Sempra Pipelines & Storage			17		28		25
Sempra LNG			30		255		61
(1)	With the exception of Sempra Pipelines & Storage, whose contract with RBS Sempra Commodities expired in July 2011, amounts only include activities prior to May 1, 2011, the date by which substantially all the contracts with RBS Sempra Commodities were assigned to buyers of the joint venture businesses.
		December 31,
		2010
Fixed-price contracts and other derivatives - Net Asset (Liability):
Sempra Generation		$	17
Sempra LNG			(35)
Total		$	(18)
Due to unconsolidated affiliates:
Sempra Generation		$	11
Sempra LNG			13
Sempra Commodities			11
Total		$	35
Due from unconsolidated affiliates:
SoCalGas		$	3
Sempra Generation			13
Sempra LNG			13
Parent and other			5
Total		$	34

Schedule Of Other Income (Expense) [Abstract]

Schedule Of Other Income (Expense)

OTHER INCOME, NET
(Dollars in millions)
		Years ended December 31,
		2011		2010		2009
Sempra Energy Consolidated:
Allowance for equity funds used during construction		$	99	$	57	$	39
Investment gains(1)			22		35		55
(Losses) gains on interest rate and foreign exchange instruments(2)			(14)		(24)		33
Regulatory interest income, net(3)			2		1		4
Sundry, net(4)			21		71		18
	Total	$	130	$	140	$	149
SDG&E:
Allowance for equity funds used during construction		$	80	$	43	$	29
Regulatory interest income, net(3)			2		―		5
(Losses) gains on interest rate instruments(5)			(1)		(34)		27
Sundry, net			(2)		1		3
	Total	$	79	$	10	$	64
SoCalGas:
Allowance for equity funds used during construction		$	19	$	14	$	10
Regulatory interest income (expense), net(3)			―		1		(1)
Sundry, net			(6)		(3)		(2)
	Total	$	13	$	12	$	7
(1)	Represents investment gains on dedicated assets in support of our executive retirement and deferred compensation plans. These amounts are partially offset by corresponding changes in compensation expense related to the plans.
(2)	Sempra Energy Consolidated includes Otay Mesa VIE and additional instruments.
(3)	Interest on regulatory balancing accounts.
(4)	Amount in 2010 includes proceeds of $48 million from a legal settlement.
(5)	Related to Otay Mesa VIE.