$SRE
SEMPRA Stock $sre

$sre Overview Financials Valuation SEC Filings Company Website

2010 Q4 Form 10-K Financial Statement

#000008652111000017 Filed on February 24, 2011

Income Statement

Concept	2010 Q4	2009 Q4	2008
Revenue	$2.345B	$2.456B	$10.76B
YoY Change	-4.52%	7.11%	-5.95%
Cost Of Revenue	$21.00M	$28.00M	$182.0M
YoY Change	-25.0%	100.0%	-81.58%
Gross Profit	$2.324B	$2.428B	$10.58B
YoY Change	-4.28%	6.54%	1.21%
Gross Profit Margin	99.1%	98.86%	98.31%
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$223.0M	$207.0M	$687.0M
YoY Change	7.73%	15.64%	0.15%
% of Gross Profit	9.6%	8.53%	6.5%
Operating Expenses	$1.950B	$2.067B	$9.233B
YoY Change	-5.66%	1.27%	5.2%
Operating Profit	$374.0M	$361.0M	$1.343B
YoY Change	3.6%	51.68%	-19.73%
Interest Expense	-$99.00M	-$17.00M	$253.0M
YoY Change	482.35%	-110.0%	-221.05%
% of Operating Profit	-26.47%	-4.71%	18.84%
Other Income/Expense, Net	$21.00M	$52.00M	-$109.0M
YoY Change	-59.62%	-137.41%	-249.32%
Pretax Income	$311.0M	$392.0M	$1.199B
YoY Change	-20.66%	45.72%	-22.29%
Income Tax	$17.00M	$95.00M	$438.0M
% Of Pretax Income	5.47%	24.23%	36.53%
Net Earnings	$283.0M	$291.0M	$1.113B
YoY Change	-2.75%	-9.63%	0.36%
Net Earnings / Revenue	12.07%	11.85%	10.35%
Basic Earnings Per Share			$4.50
Diluted Earnings Per Share	$1.167M	$1.170M	$4.43
COMMON SHARES
Basic Shares Outstanding	240.5M shares	247.0M shares	247.4M shares
Diluted Shares Outstanding			251.2M shares

Balance Sheet

Concept	2010 Q4	2009 Q4	2008
SHORT-TERM ASSETS
Cash & Short-Term Investments	$912.0M	$110.0M	$507.0M
YoY Change	729.09%	-78.3%	-82.51%
Cash & Equivalents	$912.0M	$110.0M	$331.0M
Short-Term Investments			$176.0M
Other Short-Term Assets	$193.0M	$147.0M	$469.0M
YoY Change	31.29%	-68.66%	-84.1%
Inventory	$258.0M	$197.0M	$320.0M
Prepaid Expenses
Receivables	$891.0M	$971.0M	$907.0M
Other Receivables	$689.0M	$653.0M	$273.0M
Total Short-Term Assets	$3.363B	$2.295B	$2.476B
YoY Change	46.54%	-7.31%	-75.15%
LONG-TERM ASSETS
Property, Plant & Equipment	$19.81B	$18.28B	$16.87B
YoY Change	8.39%	8.4%	13.31%
Goodwill	$87.00M	$68.00M
YoY Change	27.94%
Intangibles	$453.0M
YoY Change
Long-Term Investments	$3.720B	$5.001B	$3.825B
YoY Change	-25.61%	30.75%	92.99%
Other Assets	$600.0M	$608.0M	$2.695B
YoY Change	-1.32%	-77.44%	57.79%
Total Long-Term Assets	$26.87B	$26.22B	$23.92B
YoY Change	2.48%	9.58%	27.57%
TOTAL ASSETS
Total Short-Term Assets	$3.363B	$2.295B	$2.476B
Total Long-Term Assets	$26.87B	$26.22B	$23.92B
Total Assets	$30.23B	$28.51B	$26.40B
YoY Change	6.03%	8.0%	-8.07%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$900.0M	$722.0M	$644.0M
YoY Change	24.65%	-19.24%	-82.59%
Accrued Expenses	$311.0M	$264.0M	$280.0M
YoY Change	17.8%	-5.71%	5.66%
Deferred Revenue
YoY Change
Short-Term Debt	$158.0M	$618.0M	$503.0M
YoY Change	-74.43%	22.86%	-52.73%
Long-Term Debt Due	$349.0M	$573.0M	$410.0M
YoY Change	-39.09%	39.76%	5757.14%
Total Short-Term Liabilities	$3.786B	$3.888B	$3.612B
YoY Change	-2.62%	7.64%	-59.96%
LONG-TERM LIABILITIES
Long-Term Debt	$8.980B	$7.460B	$6.544B
YoY Change	20.38%	12.28%	38.29%
Other Long-Term Liabilities	$824.0M	$735.0M	$6.932B
YoY Change	12.11%	-89.4%	17.77%
Total Long-Term Liabilities	$824.0M	$735.0M	$13.48B
YoY Change	12.11%	-94.59%	26.92%
TOTAL LIABILITIES
Total Short-Term Liabilities	$3.786B	$3.888B	$3.612B
Total Long-Term Liabilities	$824.0M	$735.0M	$13.48B
Total Liabilities	$4.610B	$4.623B	$18.33B
YoY Change	-0.28%	-74.92%	-10.05%
SHAREHOLDERS EQUITY
Retained Earnings	$7.292B	$6.971B
YoY Change	4.6%
Common Stock	$2.036B	$2.418B
YoY Change	-15.8%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$8.990B	$9.007B	$8.069B
YoY Change
Total Liabilities & Shareholders Equity	$30.23B	$28.51B	$26.40B
YoY Change	6.03%	8.0%	-8.07%

Cashflow Statement

Concept	2010 Q4	2009 Q4	2008
OPERATING ACTIVITIES
Net Income	$283.0M	$291.0M	$1.113B
YoY Change	-2.75%	-9.63%	0.36%
Depreciation, Depletion And Amortization	$223.0M	$207.0M	$687.0M
YoY Change	7.73%	15.64%	0.15%
Cash From Operating Activities	$552.0M	-$9.000M	$1.191B
YoY Change	-6233.33%	-102.33%	-43.23%
INVESTING ACTIVITIES
Capital Expenditures	-$1.340B	-$466.0M	-$2.546B
YoY Change	187.55%	16.21%	-4.18%
Acquisitions			$495.0M
YoY Change
Other Investing Activities	$690.0M	-$236.0M	$24.00M
YoY Change	-392.37%	-39.33%	-95.89%
Cash From Investing Activities	-$650.0M	-$702.0M	-$2.386B
YoY Change	-7.41%	-11.14%	15.1%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net			$1.000B
YoY Change			-789.66%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	463.0M	65.00M	$858.0M
YoY Change	612.31%	-87.9%	-380.39%
NET CHANGE
Cash From Operating Activities	552.0M	-9.000M	$1.191B
Cash From Investing Activities	-650.0M	-702.0M	-$2.386B
Cash From Financing Activities	463.0M	65.00M	$858.0M
Net Change In Cash	365.0M	-646.0M	-$337.0M
YoY Change	-156.5%	-585.71%	19.93%
FREE CASH FLOW
Cash From Operating Activities	$552.0M	-$9.000M	$1.191B
Capital Expenditures	-$1.340B	-$466.0M	-$2.546B
Free Cash Flow	$1.892B	$457.0M	$3.737B
YoY Change	314.0%	-41.93%	-21.41%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2010	dei	Document Type DocumentType	10-K
CY2010	dei	Document Period End Date DocumentPeriodEndDate	2010-12-31
CY2010	dei	Amendment Flag AmendmentFlag	false
CY2010	dei	Entity Registrant Name EntityRegistrantName	Sempra Energy
CY2010	dei	Entity Central Index Key EntityCentralIndexKey	0001032208
CY2010	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2010	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2010	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2010	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2010	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2010Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	240505355	shares
CY2010	us-gaap	Taxes Other TaxesOther	327000000	USD
CY2010	sre	Equity Earnings Losses From Joint Venture EquityEarningsLossesFromJointVenture	-314000000	USD
CY2010	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	22000000	USD
CY2010	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	140000000	USD
CY2010	us-gaap	Investment Income Interest InvestmentIncomeInterest	16000000	USD
CY2010	us-gaap	Interest Expense InterestExpense	436000000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	786000000	USD
CY2010	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	102000000	USD
CY2010	sre	Income Loss From Equity Method Investments Net Of Tax IncomeLossFromEquityMethodInvestmentsNetOfTax	49000000	USD
CY2010Q4	dei	Entity Public Float EntityPublicFloat	11500000000	USD
CY2010	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2010
CY2010	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2010	us-gaap	Regulated Operating Revenue RegulatedOperatingRevenue	6819000000	USD
CY2010	us-gaap	Unregulated Operating Revenue UnregulatedOperatingRevenue	2184000000	USD
CY2010	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	9003000000	USD
CY2010	sre	Regulated Cost Of Natural Gas RegulatedCostOfNaturalGas	1900000000	USD
CY2010	us-gaap	Cost Of Domestic Regulated Electric CostOfDomesticRegulatedElectric	637000000	USD
CY2010	sre	Cost Of Natural Gas Electric Fuel And Purchased Power CostOfNaturalGasElectricFuelAndPurchasedPower	1155000000	USD
CY2010	us-gaap	Gas Gathering Transportation Marketing And Processing Costs GasGatheringTransportationMarketingAndProcessingCosts	91000000	USD
CY2010	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	2499000000	USD
CY2010	us-gaap	Depreciation And Amortization DepreciationAndAmortization	867000000	USD
CY2010	us-gaap	Profit Loss ProfitLoss	733000000	USD
CY2010	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-16000000	USD
CY2010	sre	Preferred Stock Dividends Of Subsidiaries PreferredStockDividendsOfSubsidiaries	10000000	USD
CY2010	us-gaap	Net Income Loss NetIncomeLoss	739000000	USD
CY2010	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.02	USD
CY2010	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	244736000	shares
CY2010	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.98	USD
CY2010	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	247942000	shares
CY2010	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.56	USD
CY2009	us-gaap	Regulated Operating Revenue RegulatedOperatingRevenue	6220000000	USD
CY2009	us-gaap	Unregulated Operating Revenue UnregulatedOperatingRevenue	1886000000	USD
CY2009	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	8106000000	USD
CY2009	sre	Regulated Cost Of Natural Gas RegulatedCostOfNaturalGas	1530000000	USD
CY2009	us-gaap	Cost Of Domestic Regulated Electric CostOfDomesticRegulatedElectric	672000000	USD
CY2009	sre	Cost Of Natural Gas Electric Fuel And Purchased Power CostOfNaturalGasElectricFuelAndPurchasedPower	976000000	USD
CY2009	us-gaap	Gas Gathering Transportation Marketing And Processing Costs GasGatheringTransportationMarketingAndProcessingCosts	80000000	USD
CY2009	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	2470000000	USD
CY2009	us-gaap	Depreciation And Amortization DepreciationAndAmortization	775000000	USD
CY2009	us-gaap	Taxes Other TaxesOther	296000000	USD
CY2009	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	3000000	USD
CY2009	sre	Equity Earnings Losses From Joint Venture EquityEarningsLossesFromJointVenture	463000000	USD
CY2009	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	36000000	USD
CY2009	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	149000000	USD
CY2009	us-gaap	Investment Income Interest InvestmentIncomeInterest	21000000	USD
CY2009	us-gaap	Interest Expense InterestExpense	367000000	USD
CY2009	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1476000000	USD
CY2009	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	422000000	USD
CY2009	sre	Income Loss From Equity Method Investments Net Of Tax IncomeLossFromEquityMethodInvestmentsNetOfTax	68000000	USD
CY2009	us-gaap	Profit Loss ProfitLoss	1122000000	USD
CY2009	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-7000000	USD
CY2009	sre	Preferred Stock Dividends Of Subsidiaries PreferredStockDividendsOfSubsidiaries	10000000	USD
CY2009	us-gaap	Net Income Loss NetIncomeLoss	1119000000	USD
CY2009	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.60	USD
CY2009	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	243339000	shares
CY2009	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.52	USD
CY2009	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	247384000	shares
CY2009	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.56	USD
CY2008	us-gaap	Regulated Operating Revenue RegulatedOperatingRevenue	7972000000	USD
CY2008	us-gaap	Unregulated Operating Revenue UnregulatedOperatingRevenue	2786000000	USD
CY2008	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	10758000000	USD
CY2008	sre	Regulated Cost Of Natural Gas RegulatedCostOfNaturalGas	3244000000	USD
CY2008	us-gaap	Cost Of Domestic Regulated Electric CostOfDomesticRegulatedElectric	900000000	USD
CY2008	sre	Cost Of Natural Gas Electric Fuel And Purchased Power CostOfNaturalGasElectricFuelAndPurchasedPower	1671000000	USD
CY2008	us-gaap	Gas Gathering Transportation Marketing And Processing Costs GasGatheringTransportationMarketingAndProcessingCosts	182000000	USD
CY2008	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	2419000000	USD
CY2008	us-gaap	Depreciation And Amortization DepreciationAndAmortization	687000000	USD
CY2008	us-gaap	Taxes Other TaxesOther	312000000	USD
CY2008	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	114000000	USD
CY2008	sre	Equity Earnings Losses From Joint Venture EquityEarningsLossesFromJointVenture	383000000	USD
CY2008	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	37000000	USD
CY2008	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-109000000	USD
CY2008	us-gaap	Investment Income Interest InvestmentIncomeInterest	45000000	USD
CY2008	us-gaap	Interest Expense InterestExpense	253000000	USD
CY2008	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1443000000	USD
CY2008	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	438000000	USD
CY2008	sre	Income Loss From Equity Method Investments Net Of Tax IncomeLossFromEquityMethodInvestmentsNetOfTax	63000000	USD
CY2008	us-gaap	Profit Loss ProfitLoss	1068000000	USD
CY2008	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-55000000	USD
CY2008	sre	Preferred Stock Dividends Of Subsidiaries PreferredStockDividendsOfSubsidiaries	10000000	USD
CY2008	us-gaap	Net Income Loss NetIncomeLoss	1113000000	USD
CY2008	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.50	USD
CY2008	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	247387000	shares
CY2008	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.43	USD
CY2008	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	251159000	shares
CY2008	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.37	USD
CY2010	sre	Litigation Expense LitigationExpense	169000000	USD
CY2009	sre	Litigation Expense LitigationExpense	4000000	USD
CY2008	sre	Litigation Expense LitigationExpense	117000000	USD
CY2009	sre	Write Off Of Long Lived Assets WriteOffOfLongLivedAssets	132000000	USD
CY2010Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	912000000	USD
CY2009Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	110000000	USD
CY2010Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	131000000	USD
CY2009Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	35000000	USD
CY2010Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	891000000	USD
CY2009Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	971000000	USD
CY2010Q4	us-gaap	Accounts Notes And Loans Receivable Net Current AccountsNotesAndLoansReceivableNetCurrent	141000000	USD
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CY2010Q4	us-gaap	Due From Affiliate Current DueFromAffiliateCurrent	34000000	USD
CY2009Q4	us-gaap	Due From Affiliate Current DueFromAffiliateCurrent	41000000	USD
CY2010Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	248000000	USD
CY2009Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	221000000	USD
CY2010Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	75000000	USD
CY2009Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	10000000	USD
CY2010Q4	us-gaap	Inventory Net InventoryNet	258000000	USD
CY2009Q4	us-gaap	Inventory Net InventoryNet	197000000	USD
CY2010Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	90000000	USD
CY2009Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	54000000	USD
CY2010Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	81000000	USD
CY2009Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	77000000	USD
CY2009Q4	us-gaap	Insurance Settlements Receivable InsuranceSettlementsReceivable	273000000	USD
CY2010Q4	sre	Legal Settlement Receivable LegalSettlementReceivable	300000000	USD
CY2010Q4	us-gaap	Other Assets Current OtherAssetsCurrent	192000000	USD
CY2009Q4	us-gaap	Other Assets Current OtherAssetsCurrent	147000000	USD
CY2010Q4	us-gaap	Assets Current AssetsCurrent	3353000000	USD
CY2009Q4	us-gaap	Assets Current AssetsCurrent	2295000000	USD
CY2010Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	27000000	USD
CY2010Q4	sre	Regulatory Assets Arising From Pension And Other Postretirement Benefit Obligations RegulatoryAssetsArisingFromPensionAndOtherPostretirementBenefitObligations	869000000	USD
CY2009Q4	sre	Regulatory Assets Arising From Pension And Other Postretirement Benefit Obligations RegulatoryAssetsArisingFromPensionAndOtherPostretirementBenefitObligations	959000000	USD
CY2010Q4	sre	Regulatory Assets Arising From Wildfire Litigation Costs RegulatoryAssetsArisingFromWildfireLitigationCosts	364000000	USD
CY2010Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	934000000	USD
CY2009Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	844000000	USD
CY2010Q4	us-gaap	Decommissioning Fund Investments DecommissioningFundInvestments	769000000	USD
CY2009Q4	us-gaap	Decommissioning Fund Investments DecommissioningFundInvestments	678000000	USD
CY2010Q4	sre	Investment In Joint Venture InvestmentInJointVenture	787000000	USD
CY2009Q4	sre	Investment In Joint Venture InvestmentInJointVenture	2172000000	USD
CY2010Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	2164000000	USD
CY2009Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	2151000000	USD
CY2010Q4	sre	Goodwill And Other Intangible Assets GoodwillAndOtherIntangibleAssets	540000000	USD
CY2009Q4	sre	Goodwill And Other Intangible Assets GoodwillAndOtherIntangibleAssets	524000000	USD
CY2010Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	600000000	USD
CY2009Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	608000000	USD
CY2010Q4	sre	Total Investments And Other Assets TotalInvestmentsAndOtherAssets	7054000000	USD
CY2009Q4	sre	Total Investments And Other Assets TotalInvestmentsAndOtherAssets	7936000000	USD
CY2010Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	27087000000	USD
CY2009Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	25034000000	USD
CY2010Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	7211000000	USD
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CY2010Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	19876000000	USD
CY2009Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	18281000000	USD
CY2010Q4	us-gaap	Assets Assets	30283000000	USD
CY2009Q4	us-gaap	Assets Assets	28512000000	USD
CY2010Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	158000000	USD
CY2009Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	618000000	USD
CY2010Q4	us-gaap	Accounts Payable Trade Current AccountsPayableTradeCurrent	755000000	USD
CY2009Q4	us-gaap	Accounts Payable Trade Current AccountsPayableTradeCurrent	522000000	USD
CY2010Q4	us-gaap	Accounts Payable Other Current AccountsPayableOtherCurrent	109000000	USD
CY2009Q4	us-gaap	Accounts Payable Other Current AccountsPayableOtherCurrent	171000000	USD
CY2010Q4	us-gaap	Due To Affiliate Current DueToAffiliateCurrent	36000000	USD
CY2009Q4	us-gaap	Due To Affiliate Current DueToAffiliateCurrent	29000000	USD
CY2010Q4	us-gaap	Interest And Dividends Payable Current InterestAndDividendsPayableCurrent	188000000	USD
CY2009Q4	us-gaap	Interest And Dividends Payable Current InterestAndDividendsPayableCurrent	190000000	USD
CY2010Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	311000000	USD
CY2009Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	264000000	USD
CY2010Q4	sre	Regulatory Balancing Accounts Net RegulatoryBalancingAccountsNet	241000000	USD
CY2009Q4	sre	Regulatory Balancing Accounts Net RegulatoryBalancingAccountsNet	382000000	USD
CY2010Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	349000000	USD
CY2009Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	573000000	USD
CY2010Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	106000000	USD
CY2009Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	95000000	USD
CY2010Q4	us-gaap	Customer Deposits Current CustomerDepositsCurrent	129000000	USD
CY2009Q4	us-gaap	Customer Deposits Current CustomerDepositsCurrent	145000000	USD
CY2010Q4	us-gaap	Litigation Reserve Current LitigationReserveCurrent	639000000	USD
CY2009Q4	us-gaap	Litigation Reserve Current LitigationReserveCurrent	270000000	USD
CY2010Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	765000000	USD
CY2009Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	629000000	USD
CY2010Q4	us-gaap	Liabilities Current LiabilitiesCurrent	3786000000	USD
CY2009Q4	us-gaap	Liabilities Current LiabilitiesCurrent	3888000000	USD
CY2010Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	8980000000	USD
CY2009Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	7460000000	USD
CY2009Q4	us-gaap	Due To Affiliate Noncurrent DueToAffiliateNoncurrent	2000000	USD
CY2010Q4	us-gaap	Customer Advances For Construction CustomerAdvancesForConstruction	154000000	USD
CY2009Q4	us-gaap	Customer Advances For Construction CustomerAdvancesForConstruction	146000000	USD
CY2010Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	1105000000	USD
CY2009Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	1252000000	USD
CY2010Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	1561000000	USD
CY2009Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	1318000000	USD
CY2010Q4	us-gaap	Accumulated Deferred Investment Tax Credit AccumulatedDeferredInvestmentTaxCredit	50000000	USD
CY2009Q4	us-gaap	Accumulated Deferred Investment Tax Credit AccumulatedDeferredInvestmentTaxCredit	54000000	USD
CY2010Q4	sre	Regulatory Liabilities Arising From Removal Obligations RegulatoryLiabilitiesArisingFromRemovalObligations	2630000000	USD
CY2009Q4	sre	Regulatory Liabilities Arising From Removal Obligations RegulatoryLiabilitiesArisingFromRemovalObligations	2557000000	USD
CY2010Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	1449000000	USD
CY2009Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	1277000000	USD
CY2010Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	138000000	USD
CY2009Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	181000000	USD
CY2010Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	290000000	USD
CY2009Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	312000000	USD
CY2010Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	823000000	USD
CY2009Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	735000000	USD
CY2010Q4	sre	Total Deferred Credits And Other Liabilities TotalDeferredCreditsAndOtherLiabilities	8200000000	USD
CY2009Q4	sre	Total Deferred Credits And Other Liabilities TotalDeferredCreditsAndOtherLiabilities	7834000000	USD
CY2010Q4	sre	Contingently Redeemable Preferred Stock Of Subsidiary ContingentlyRedeemablePreferredStockOfSubsidiary	79000000	USD
CY2009Q4	sre	Contingently Redeemable Preferred Stock Of Subsidiary ContingentlyRedeemablePreferredStockOfSubsidiary	79000000	USD
CY2010Q4	us-gaap	Common Stock Value CommonStockValue	2036000000	USD
CY2009Q4	us-gaap	Common Stock Value CommonStockValue	2418000000	USD
CY2010Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	7329000000	USD
CY2009Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	6971000000	USD
CY2010Q4	us-gaap	Deferred Compensation Equity DeferredCompensationEquity	8000000	USD
CY2009Q4	us-gaap	Deferred Compensation Equity DeferredCompensationEquity	13000000	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-330000000	USD
CY2009Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-369000000	USD
CY2010Q4	us-gaap	Stockholders Equity StockholdersEquity	9027000000	USD
CY2009Q4	us-gaap	Stockholders Equity StockholdersEquity	9007000000	USD
CY2010Q4	sre	Preferred Stock Of Subsidiaries PreferredStockOfSubsidiaries	100000000	USD
CY2009Q4	sre	Preferred Stock Of Subsidiaries PreferredStockOfSubsidiaries	100000000	USD
CY2010Q4	us-gaap	Minority Interest MinorityInterest	111000000	USD
CY2009Q4	us-gaap	Minority Interest MinorityInterest	144000000	USD
CY2010Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	9238000000	USD
CY2009Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	9251000000	USD
CY2010Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	30283000000	USD
CY2009Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	28512000000	USD
CY2010Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	50000000	shares
CY2009Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	50000000	shares
CY2010Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	750000000	shares
CY2009Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	750000000	shares
CY2010Q4	sre	Variable Interest Entities Consolidated Carrying Amount Net Property Plant And Equipment VariableInterestEntitiesConsolidatedCarryingAmountNetPropertyPlantAndEquipment	516000000	USD
CY2009Q4	sre	Variable Interest Entities Consolidated Carrying Amount Net Property Plant And Equipment VariableInterestEntitiesConsolidatedCarryingAmountNetPropertyPlantAndEquipment	644000000	USD
CY2010Q4	sre	Variable Interest Entities Consolidated Carrying Amount Long Term Debt VariableInterestEntitiesConsolidatedCarryingAmountLongTermDebt	355000000	USD
CY2009Q4	sre	Variable Interest Entities Consolidated Carrying Amount Long Term Debt VariableInterestEntitiesConsolidatedCarryingAmountLongTermDebt	422000000	USD
CY2010	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	48000000	USD
CY2009	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	295000000	USD
CY2008	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	324000000	USD
CY2010	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	-243000000	USD
CY2009	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	567000000	USD
CY2008	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	483000000	USD
CY2010	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-13000000	USD
CY2009	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	30000000	USD
CY2008	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-46000000	USD
CY2010	us-gaap	Adjustments Noncash Items To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities Other AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesOther	-55000000	USD
CY2009	us-gaap	Adjustments Noncash Items To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities Other AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesOther	-45000000	USD
CY2008	us-gaap	Adjustments Noncash Items To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities Other AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesOther	150000000	USD
CY2010	us-gaap	Increase Decrease In Operating Capital IncreaseDecreaseInOperatingCapital	-58000000	USD
CY2009	us-gaap	Increase Decrease In Operating Capital IncreaseDecreaseInOperatingCapital	256000000	USD
CY2008	us-gaap	Increase Decrease In Operating Capital IncreaseDecreaseInOperatingCapital	483000000	USD
CY2010	sre	Distributions From Joint Venture DistributionsFromJointVenture	198000000	USD
CY2009	sre	Distributions From Joint Venture DistributionsFromJointVenture	407000000	USD
CY2008	sre	Distributions From Joint Venture DistributionsFromJointVenture	85000000	USD
CY2010	sre	Increase Decrease In Noncurrent Assets IncreaseDecreaseInNoncurrentAssets	-54000000	USD
CY2009	sre	Increase Decrease In Noncurrent Assets IncreaseDecreaseInNoncurrentAssets	-139000000	USD
CY2008	sre	Increase Decrease In Noncurrent Assets IncreaseDecreaseInNoncurrentAssets	15000000	USD
CY2010	sre	Increase Decrease In Noncurrent Liabilities IncreaseDecreaseInNoncurrentLiabilities	-5000000	USD
CY2009	sre	Increase Decrease In Noncurrent Liabilities IncreaseDecreaseInNoncurrentLiabilities	-94000000	USD
CY2008	sre	Increase Decrease In Noncurrent Liabilities IncreaseDecreaseInNoncurrentLiabilities	-74000000	USD
CY2010	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	2154000000	USD
CY2009	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1875000000	USD
CY2008	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1191000000	USD
CY2010	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	2062000000	USD
CY2009	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	1912000000	USD
CY2008	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	2061000000	USD
CY2010	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	303000000	USD
CY2009	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	179000000	USD
CY2008	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	2295000000	USD
CY2010	sre	Expeditures For Investments And Acquisition Of Businesses Net Of Cash Acquired ExpedituresForInvestmentsAndAcquisitionOfBusinessesNetOfCashAcquired	-611000000	USD
CY2009	sre	Expeditures For Investments And Acquisition Of Businesses Net Of Cash Acquired ExpedituresForInvestmentsAndAcquisitionOfBusinessesNetOfCashAcquired	-939000000	USD
CY2008	sre	Expeditures For Investments And Acquisition Of Businesses Net Of Cash Acquired ExpedituresForInvestmentsAndAcquisitionOfBusinessesNetOfCashAcquired	-2675000000	USD
CY2010	sre	Distributions From Joint Venture Investing Activities DistributionsFromJointVentureInvestingActivities	849000000	USD
CY2010	sre	Distributions From Investments DistributionsFromInvestments	371000000	USD
CY2009	sre	Distributions From Investments DistributionsFromInvestments	23000000	USD
CY2008	sre	Distributions From Investments DistributionsFromInvestments	34000000	USD
CY2010	sre	Purchases Of Nuclear Decommissioning And Other Trust Assets PurchasesOfNuclearDecommissioningAndOtherTrustAssets	371000000	USD
CY2009	sre	Purchases Of Nuclear Decommissioning And Other Trust Assets PurchasesOfNuclearDecommissioningAndOtherTrustAssets	267000000	USD
CY2008	sre	Purchases Of Nuclear Decommissioning And Other Trust Assets PurchasesOfNuclearDecommissioningAndOtherTrustAssets	485000000	USD
CY2010	sre	Proceeds From Sales By Nuclear Decommissioning And Other Trusts ProceedsFromSalesByNuclearDecommissioningAndOtherTrusts	372000000	USD
CY2009	sre	Proceeds From Sales By Nuclear Decommissioning And Other Trusts ProceedsFromSalesByNuclearDecommissioningAndOtherTrusts	230000000	USD
CY2008	sre	Proceeds From Sales By Nuclear Decommissioning And Other Trusts ProceedsFromSalesByNuclearDecommissioningAndOtherTrusts	469000000	USD
CY2010	sre	Decrease In Restricted Cash DecreaseInRestrictedCash	195000000	USD
CY2009	sre	Decrease In Restricted Cash DecreaseInRestrictedCash	37000000	USD
CY2008	sre	Decrease In Restricted Cash DecreaseInRestrictedCash	1000000	USD
CY2010	sre	Increase In Restricted Cash IncreaseInRestrictedCash	318000000	USD
CY2009	sre	Increase In Restricted Cash IncreaseInRestrictedCash	45000000	USD
CY2009	us-gaap	Proceeds From Payments For Long Term Loans For Related Parties ProceedsFromPaymentsForLongTermLoansForRelatedParties	100000000	USD
CY2008	us-gaap	Proceeds From Payments For Long Term Loans For Related Parties ProceedsFromPaymentsForLongTermLoansForRelatedParties	60000000	USD
CY2009	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	50000000	USD
CY2010	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	11000000	USD
CY2009	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	28000000	USD
CY2008	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	24000000	USD
CY2010	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1283000000	USD
CY2009	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2672000000	USD
CY2008	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2386000000	USD
CY2010	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	364000000	USD
CY2009	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	341000000	USD
CY2008	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	339000000	USD
CY2010	sre	Preferred Dividends Paid By Subsidiaries PreferredDividendsPaidBySubsidiaries	10000000	USD
CY2009	sre	Preferred Dividends Paid By Subsidiaries PreferredDividendsPaidBySubsidiaries	10000000	USD
CY2008	sre	Preferred Dividends Paid By Subsidiaries PreferredDividendsPaidBySubsidiaries	10000000	USD
CY2010	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	40000000	USD
CY2009	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	73000000	USD
CY2008	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	18000000	USD
CY2010	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	502000000	USD
CY2009	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	22000000	USD
CY2008	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1018000000	USD
CY2010	sre	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	1125000000	USD
CY2009	sre	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	2151000000	USD
CY2008	sre	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	1706000000	USD
CY2010	us-gaap	Increase Decrease In Balancing Account Utility IncreaseDecreaseInBalancingAccountUtility	155000000	USD
CY2009	us-gaap	Increase Decrease In Notes Payable Related Parties IncreaseDecreaseInNotesPayableRelatedParties	-100000000	USD
CY2008	us-gaap	Increase Decrease In Notes Payable Related Parties IncreaseDecreaseInNotesPayableRelatedParties	-60000000	USD
CY2009	us-gaap	Payments To Acquire Additional Interest In Subsidiaries PaymentsToAcquireAdditionalInterestInSubsidiaries	94000000	USD
CY2010	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-21000000	USD
CY2009	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	50000000	USD
CY2010Q4	us-gaap	Dividends Payable Amount DividendsPayableAmount	96000000	USD
CY2009Q4	us-gaap	Dividends Payable Amount DividendsPayableAmount	99000000	USD
CY2008Q4	us-gaap	Dividends Payable Amount DividendsPayableAmount	88000000	USD
CY2010	us-gaap	Fair Value Of Assets Acquired FairValueOfAssetsAcquired	303000000	USD
CY2008	us-gaap	Fair Value Of Assets Acquired FairValueOfAssetsAcquired	1307000000	USD
CY2010	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	292000000	USD
CY2008	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	495000000	USD
CY2010	sre	Payments On Debt PaymentsOnDebt	905000000	USD
CY2009	sre	Payments On Debt PaymentsOnDebt	435000000	USD
CY2008	sre	Payments On Debt PaymentsOnDebt	19000000	USD
CY2010	us-gaap	Proceeds From Repayments Of Short Term Debt Maturing In Three Months Or Less ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess	568000000	USD
CY2009	us-gaap	Proceeds From Repayments Of Short Term Debt Maturing In Three Months Or Less ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess	-659000000	USD
CY2008	us-gaap	Proceeds From Repayments Of Short Term Debt Maturing In Three Months Or Less ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess	564000000	USD
CY2009	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	13000000	USD
CY2008	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	16000000	USD
CY2010	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-69000000	USD
CY2009	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	576000000	USD
CY2008	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	858000000	USD
CY2010	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	802000000	USD
CY2009	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-221000000	USD
CY2008	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-337000000	USD
CY2008Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	331000000	USD
CY2007Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	668000000	USD
CY2010	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	192000000	USD
CY2008	sre	Noncontrolling Interests In Acquired Businesses NoncontrollingInterestsInAcquiredBusinesses	86000000	USD
CY2010	us-gaap	Liabilities Assumed LiabilitiesAssumed	11000000	USD
CY2008	us-gaap	Liabilities Assumed LiabilitiesAssumed	726000000	USD
CY2010	us-gaap	Interest Paid Net InterestPaidNet	415000000	USD
CY2009	us-gaap	Interest Paid Net InterestPaidNet	326000000	USD
CY2008	us-gaap	Interest Paid Net InterestPaidNet	233000000	USD
CY2010	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	68000000	USD
CY2009	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	112000000	USD
CY2008	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	114000000	USD
CY2010	us-gaap	Increase Decrease In Accounts And Notes Receivable IncreaseDecreaseInAccountsAndNotesReceivable	-89000000	USD
CY2009	us-gaap	Increase Decrease In Accounts And Notes Receivable IncreaseDecreaseInAccountsAndNotesReceivable	190000000	USD
CY2008	us-gaap	Increase Decrease In Accounts And Notes Receivable IncreaseDecreaseInAccountsAndNotesReceivable	-110000000	USD
CY2010	sre	Increase Decrease In Income Taxes Net IncreaseDecreaseInIncomeTaxesNet	30000000	USD
CY2009	sre	Increase Decrease In Income Taxes Net IncreaseDecreaseInIncomeTaxesNet	17000000	USD
CY2008	sre	Increase Decrease In Income Taxes Net IncreaseDecreaseInIncomeTaxesNet	-13000000	USD
CY2010	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	62000000	USD
CY2009	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-124000000	USD
CY2008	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	75000000	USD
CY2009	us-gaap	Increase Decrease In Balancing Account Utility IncreaseDecreaseInBalancingAccountUtility	-42000000	USD
CY2008	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-526000000	USD
CY2008	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-71000000	USD
CY2010	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	79000000	USD
CY2009	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-109000000	USD
CY2008	us-gaap	Increase Decrease In Balancing Account Utility IncreaseDecreaseInBalancingAccountUtility	138000000	USD
CY2010	us-gaap	Increase Decrease In Regulatory Assets And Liabilities IncreaseDecreaseInRegulatoryAssetsAndLiabilities	-6000000	USD
CY2009	us-gaap	Increase Decrease In Regulatory Assets And Liabilities IncreaseDecreaseInRegulatoryAssetsAndLiabilities	1000000	USD
CY2008	us-gaap	Increase Decrease In Regulatory Assets And Liabilities IncreaseDecreaseInRegulatoryAssetsAndLiabilities	-1000000	USD
CY2010	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-310000000	USD
CY2009	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-685000000	USD
CY2010	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-179000000	USD
CY2009	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-790000000	USD
CY2008	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	65000000	USD
CY2008	us-gaap	Increase Decrease In Commodity Contract Assets And Liabilities IncreaseDecreaseInCommodityContractAssetsAndLiabilities	4000000	USD
CY2007Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	8587000000	USD
CY2008	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-140000000	USD
CY2008	us-gaap	Other Comprehensive Income Available For Sale Securities Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease	-26000000	USD
CY2008	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease	-30000000	USD
CY2008	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease	-30000000	USD
CY2008	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	842000000	USD
CY2008	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	49000000	USD
CY2008	us-gaap	Dividends Common Stock DividendsCommonStock	342000000	USD
CY2008	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	18000000	USD
CY2008	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	6000000	USD
CY2008	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	1018000000	USD
CY2008	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	16000000	USD
CY2008	us-gaap	Minority Interest Increase From Stock Issuance MinorityInterestIncreaseFromStockIssuance	75000000	USD
CY2008	sre	Acquisition Of Noncontrolling Interests In Subsidiaries AcquisitionOfNoncontrollingInterestsInSubsidiaries	86000000	USD
CY2008Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	8309000000	USD
CY2009	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	102000000	USD
CY2009	us-gaap	Other Comprehensive Income Available For Sale Securities Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease	7000000	USD
CY2009	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease	-3000000	USD
CY2009	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease	35000000	USD
CY2009	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	1263000000	USD
CY2009	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	38000000	USD
CY2009	us-gaap	Dividends Common Stock DividendsCommonStock	383000000	USD
CY2009	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	114000000	USD
CY2009	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	23000000	USD
CY2009	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	22000000	USD
CY2009	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	15000000	USD
CY2009	us-gaap	Minority Interest Increase From Stock Issuance MinorityInterestIncreaseFromStockIssuance	7000000	USD
CY2009	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	-9000000	USD
CY2009	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	94000000	USD
CY2010	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	47000000	USD
CY2010	us-gaap	Other Comprehensive Income Available For Sale Securities Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease	-8000000	USD
CY2010	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease	13000000	USD
CY2010	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease	-6000000	USD
CY2010	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	779000000	USD
CY2010	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	38000000	USD
CY2010	us-gaap	Dividends Common Stock DividendsCommonStock	381000000	USD
CY2010	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	64000000	USD
CY2010	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	5000000	USD
CY2010	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	502000000	USD
CY2010	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	18000000	USD
CY2010	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	24000000	USD
CY2009Q4	sre	Overcollected Regulatory Balancing Accounts OvercollectedRegulatoryBalancingAccounts	699000000	USD
CY2009Q4	sre	Undercollected Regulatory Balancing Accounts UndercollectedRegulatoryBalancingAccounts	317000000	USD
CY2009Q4	sre	Net Overcollected Regulatory Balancing Accounts NetOvercollectedRegulatoryBalancingAccounts	382000000	USD
CY2010Q4	sre	Overcollected Regulatory Balancing Accounts OvercollectedRegulatoryBalancingAccounts	733000000	USD
CY2010Q4	sre	Undercollected Regulatory Balancing Accounts UndercollectedRegulatoryBalancingAccounts	492000000	USD
CY2010Q4	sre	Net Overcollected Regulatory Balancing Accounts NetOvercollectedRegulatoryBalancingAccounts	241000000	USD
CY2010Q4	sre	Total Regulatory Assets Current TotalRegulatoryAssetsCurrent	90000000	USD
CY2010Q4	sre	Total Regulatory Assets Noncurrent TotalRegulatoryAssetsNoncurrent	2167000000	USD
CY2010Q4	sre	Total Regulatory Liability Current TotalRegulatoryLiabilityCurrent	8000000	USD
CY2010Q4	sre	Total Regulatory Liability Noncurrent TotalRegulatoryLiabilityNoncurrent	2768000000	USD
CY2010Q4	us-gaap	Net Regulatory Assets NetRegulatoryAssets	-519000000	USD
CY2009Q4	sre	Total Regulatory Assets Current TotalRegulatoryAssetsCurrent	54000000	USD
CY2009Q4	sre	Total Regulatory Assets Noncurrent TotalRegulatoryAssetsNoncurrent	1803000000	USD
CY2009Q4	sre	Total Regulatory Liability Current TotalRegulatoryLiabilityCurrent	4000000	USD
CY2009Q4	sre	Total Regulatory Liability Noncurrent TotalRegulatoryLiabilityNoncurrent	2738000000	USD
CY2009Q4	us-gaap	Net Regulatory Assets NetRegulatoryAssets	-885000000	USD
CY2010Q4	us-gaap	Energy Related Inventory Natural Gas In Storage EnergyRelatedInventoryNaturalGasInStorage	152000000	USD
CY2010Q4	sre	Energy Related Inventory Materials And Supplies EnergyRelatedInventoryMaterialsAndSupplies	106000000	USD
CY2009Q4	us-gaap	Energy Related Inventory Natural Gas In Storage EnergyRelatedInventoryNaturalGasInStorage	93000000	USD
CY2009Q4	sre	Energy Related Inventory Materials And Supplies EnergyRelatedInventoryMaterialsAndSupplies	104000000	USD
CY2010	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Interest PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedInterest	24000000	USD
CY2010	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	-57000000	USD
CY2010	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	33000000	USD
CY2010	sre	Capitalized Financing Costs CapitalizedFinancingCosts	114000000	USD
CY2009	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Interest PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedInterest	15000000	USD
CY2009	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	-39000000	USD
CY2009	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	73000000	USD
CY2009	sre	Capitalized Financing Costs CapitalizedFinancingCosts	127000000	USD
CY2008	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Interest PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedInterest	13000000	USD
CY2008	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	-35000000	USD
CY2008	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	100000000	USD
CY2008	sre	Capitalized Financing Costs CapitalizedFinancingCosts	148000000	USD
CY2010Q4	us-gaap	Assets Held For Sale Long Lived AssetsHeldForSaleLongLived	41000000	USD
CY2009Q4	us-gaap	Assets Held For Sale Long Lived AssetsHeldForSaleLongLived	41000000	USD
CY2010Q4	us-gaap	Goodwill Goodwill	87000000	USD
CY2009Q4	sre	Amounts Associated With Variable Interest Entities Inventories AmountsAssociatedWithVariableInterestEntitiesInventories	2000000	USD
CY2009Q4	us-gaap	Goodwill Goodwill	68000000	USD
CY2010Q4	sre	Intangible Assets Gross IntangibleAssetsGross	476000000	USD
CY2010Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	23000000	USD
CY2010Q4	sre	Intangible Assets Net IntangibleAssetsNet	453000000	USD
CY2009Q4	sre	Intangible Assets Gross IntangibleAssetsGross	469000000	USD
CY2009Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	13000000	USD
CY2009Q4	sre	Intangible Assets Net IntangibleAssetsNet	456000000	USD
CY2010Q4	sre	Amounts Associated With Variable Interest Entities Cash And Cash Equivalents AmountsAssociatedWithVariableInterestEntitiesCashAndCashEquivalents	10000000	USD
CY2010Q4	sre	Amounts Associated With Variable Interest Entities Restricted Cash AmountsAssociatedWithVariableInterestEntitiesRestrictedCash	6000000	USD
CY2010Q4	sre	Amounts Associated With Variable Interest Entities Accounts Receivable Other AmountsAssociatedWithVariableInterestEntitiesAccountsReceivableOther	-1000000	USD
CY2010Q4	sre	Amounts Associated With Variable Interest Entities Inventories AmountsAssociatedWithVariableInterestEntitiesInventories	2000000	USD
CY2010Q4	sre	Amounts Associated With Variable Interest Entities Total Current Assets AmountsAssociatedWithVariableInterestEntitiesTotalCurrentAssets	18000000	USD
CY2010Q4	sre	Amounts Associated With Variable Interest Entities Sundry AmountsAssociatedWithVariableInterestEntitiesSundry	6000000	USD
CY2010Q4	sre	Amounts Associated With Variable Interest Entities Property Plant And Equipment Net AmountsAssociatedWithVariableInterestEntitiesPropertyPlantAndEquipmentNet	516000000	USD
CY2010Q4	sre	Amounts Associated With Variable Interest Entities Total Assets AmountsAssociatedWithVariableInterestEntitiesTotalAssets	540000000	USD
CY2010Q4	sre	Amounts Associated With Variable Interest Entities Current Portion Long Term Debt AmountsAssociatedWithVariableInterestEntitiesCurrentPortionLongTermDebt	10000000	USD
CY2010Q4	sre	Amounts Associated With Variable Interest Entities Fixed Price Contracts And Other Derivatives Current Liability AmountsAssociatedWithVariableInterestEntitiesFixedPriceContractsAndOtherDerivativesCurrentLiability	17000000	USD
CY2010Q4	sre	Amounts Associated With Variable Interest Entities Other Current Liabilities AmountsAssociatedWithVariableInterestEntitiesOtherCurrentLiabilities	1000000	USD
CY2010Q4	sre	Amounts Associated With Variable Interest Entities Total Current Liabilities AmountsAssociatedWithVariableInterestEntitiesTotalCurrentLiabilities	28000000	USD
CY2010Q4	sre	Amounts Associated With Variable Interest Entities Long Term Debt AmountsAssociatedWithVariableInterestEntitiesLongTermDebt	355000000	USD
CY2010Q4	sre	Amounts Associated With Variable Interest Entities Fixed Price Contracts And Other Derivatives Noncurrent Liability AmountsAssociatedWithVariableInterestEntitiesFixedPriceContractsAndOtherDerivativesNoncurrentLiability	41000000	USD
CY2010Q4	sre	Amounts Associated With Variable Interest Entities Deferred Credits And Other AmountsAssociatedWithVariableInterestEntitiesDeferredCreditsAndOther	3000000	USD
CY2010Q4	sre	Amounts Associated With Variable Interest Entities Other Noncontrolling Interests AmountsAssociatedWithVariableInterestEntitiesOtherNoncontrollingInterests	113000000	USD
CY2010Q4	sre	Amounts Associated With Variable Interest Entities Total Liabilities And Equity AmountsAssociatedWithVariableInterestEntitiesTotalLiabilitiesAndEquity	540000000	USD
CY2010	sre	Amounts Associated With Variable Interest Entities Operating Revenues Electric AmountsAssociatedWithVariableInterestEntitiesOperatingRevenuesElectric	-1000000	USD
CY2010	sre	Amounts Associated With Variable Interest Entities Operating Revenues Gas AmountsAssociatedWithVariableInterestEntitiesOperatingRevenuesGas	-3000000	USD
CY2010	sre	Amounts Associated With Variable Interest Entities Total Operating Revenues AmountsAssociatedWithVariableInterestEntitiesTotalOperatingRevenues	-4000000	USD
CY2010	sre	Amounts Associated With Variable Interest Entities Cost Of Electric Fuel And Purchased Power AmountsAssociatedWithVariableInterestEntitiesCostOfElectricFuelAndPurchasedPower	-82000000	USD
CY2010	sre	Amounts Associated With Variable Interest Entities Operation And Maintenance AmountsAssociatedWithVariableInterestEntitiesOperationAndMaintenance	20000000	USD
CY2010	sre	Amounts Associated With Variable Interest Entities Depreciation And Amortization AmountsAssociatedWithVariableInterestEntitiesDepreciationAndAmortization	26000000	USD
CY2010	sre	Amounts Associated With Variable Interest Entities Total Operating Expenses AmountsAssociatedWithVariableInterestEntitiesTotalOperatingExpenses	-36000000	USD
CY2010	sre	Amounts Associated With Variable Interest Entities Operating Income AmountsAssociatedWithVariableInterestEntitiesOperatingIncome	32000000	USD
CY2010	sre	Amounts Associated With Variable Interest Entities Other Income Expense Net AmountsAssociatedWithVariableInterestEntitiesOtherIncomeExpenseNet	-34000000	USD
CY2010	sre	Amounts Associated With Variable Interest Entities Interest Expense AmountsAssociatedWithVariableInterestEntitiesInterestExpense	14000000	USD
CY2010	sre	Amounts Associated With Variable Interest Entities Net Income AmountsAssociatedWithVariableInterestEntitiesNetIncome	-16000000	USD
CY2010	sre	Amounts Associated With Variable Interest Entities Earnings Losses Attributable Noncontrolling Interests AmountsAssociatedWithVariableInterestEntitiesEarningsLossesAttributableNoncontrollingInterests	-16000000	USD
CY2010Q4	sre	Amounts Associated With Variable Interest Entities Other Current Assets AmountsAssociatedWithVariableInterestEntitiesOtherCurrentAssets	1000000	USD
CY2009Q4	sre	Amounts Associated With Variable Interest Entities Cash And Cash Equivalents AmountsAssociatedWithVariableInterestEntitiesCashAndCashEquivalents	7000000	USD
CY2009Q4	sre	Amounts Associated With Variable Interest Entities Restricted Cash AmountsAssociatedWithVariableInterestEntitiesRestrictedCash	8000000	USD
CY2009Q4	sre	Amounts Associated With Variable Interest Entities Accounts Receivable Other AmountsAssociatedWithVariableInterestEntitiesAccountsReceivableOther	1000000	USD
CY2009Q4	sre	Amounts Associated With Variable Interest Entities Total Current Assets AmountsAssociatedWithVariableInterestEntitiesTotalCurrentAssets	18000000	USD
CY2009Q4	sre	Amounts Associated With Variable Interest Entities Sundry AmountsAssociatedWithVariableInterestEntitiesSundry	10000000	USD
CY2009Q4	sre	Amounts Associated With Variable Interest Entities Property Plant And Equipment Net AmountsAssociatedWithVariableInterestEntitiesPropertyPlantAndEquipmentNet	644000000	USD
CY2009Q4	sre	Amounts Associated With Variable Interest Entities Total Assets AmountsAssociatedWithVariableInterestEntitiesTotalAssets	672000000	USD
CY2009Q4	sre	Amounts Associated With Variable Interest Entities Short Term Debt AmountsAssociatedWithVariableInterestEntitiesShortTermDebt	33000000	USD
CY2009Q4	sre	Amounts Associated With Variable Interest Entities Current Portion Long Term Debt AmountsAssociatedWithVariableInterestEntitiesCurrentPortionLongTermDebt	40000000	USD
CY2009Q4	sre	Amounts Associated With Variable Interest Entities Fixed Price Contracts And Other Derivatives Current Liability AmountsAssociatedWithVariableInterestEntitiesFixedPriceContractsAndOtherDerivativesCurrentLiability	17000000	USD
CY2009	sre	Utility Incentive Awards Unbundled Natural Gas Storage And Hub Services UtilityIncentiveAwardsUnbundledNaturalGasStorageAndHubServices	19000000	USD
CY2008	sre	Utility Incentive Awards Unbundled Natural Gas Storage And Hub Services UtilityIncentiveAwardsUnbundledNaturalGasStorageAndHubServices	15000000	USD
CY2010	sre	Utility Incentive Awards Natural Gas Procurement UtilityIncentiveAwardsNaturalGasProcurement	12000000	USD
CY2009	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	49000000	USD
CY2010Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	1468000000	USD
CY2009Q4	sre	Amounts Associated With Variable Interest Entities Other Current Liabilities AmountsAssociatedWithVariableInterestEntitiesOtherCurrentLiabilities	-13000000	USD
CY2009Q4	sre	Amounts Associated With Variable Interest Entities Total Current Liabilities AmountsAssociatedWithVariableInterestEntitiesTotalCurrentLiabilities	77000000	USD
CY2009Q4	sre	Amounts Associated With Variable Interest Entities Long Term Debt AmountsAssociatedWithVariableInterestEntitiesLongTermDebt	422000000	USD
CY2009Q4	sre	Amounts Associated With Variable Interest Entities Fixed Price Contracts And Other Derivatives Noncurrent Liability AmountsAssociatedWithVariableInterestEntitiesFixedPriceContractsAndOtherDerivativesNoncurrentLiability	26000000	USD
CY2009Q4	sre	Amounts Associated With Variable Interest Entities Deferred Credits And Other AmountsAssociatedWithVariableInterestEntitiesDeferredCreditsAndOther	1000000	USD
CY2009Q4	sre	Amounts Associated With Variable Interest Entities Other Noncontrolling Interests AmountsAssociatedWithVariableInterestEntitiesOtherNoncontrollingInterests	146000000	USD
CY2009Q4	sre	Amounts Associated With Variable Interest Entities Total Liabilities And Equity AmountsAssociatedWithVariableInterestEntitiesTotalLiabilitiesAndEquity	672000000	USD
CY2009	sre	Amounts Associated With Variable Interest Entities Operating Revenues Electric AmountsAssociatedWithVariableInterestEntitiesOperatingRevenuesElectric	-1000000	USD
CY2009	sre	Amounts Associated With Variable Interest Entities Total Operating Revenues AmountsAssociatedWithVariableInterestEntitiesTotalOperatingRevenues	-1000000	USD
CY2009	sre	Amounts Associated With Variable Interest Entities Cost Of Electric Fuel And Purchased Power AmountsAssociatedWithVariableInterestEntitiesCostOfElectricFuelAndPurchasedPower	-13000000	USD
CY2009	sre	Amounts Associated With Variable Interest Entities Operation And Maintenance AmountsAssociatedWithVariableInterestEntitiesOperationAndMaintenance	7000000	USD
CY2009	sre	Amounts Associated With Variable Interest Entities Depreciation And Amortization AmountsAssociatedWithVariableInterestEntitiesDepreciationAndAmortization	7000000	USD
CY2009	sre	Amounts Associated With Variable Interest Entities Total Operating Expenses AmountsAssociatedWithVariableInterestEntitiesTotalOperatingExpenses	1000000	USD
CY2009	sre	Amounts Associated With Variable Interest Entities Operating Income AmountsAssociatedWithVariableInterestEntitiesOperatingIncome	-2000000	USD
CY2009	sre	Amounts Associated With Variable Interest Entities Other Income Expense Net AmountsAssociatedWithVariableInterestEntitiesOtherIncomeExpenseNet	27000000	USD
CY2009	sre	Amounts Associated With Variable Interest Entities Interest Expense AmountsAssociatedWithVariableInterestEntitiesInterestExpense	1000000	USD
CY2009	sre	Amounts Associated With Variable Interest Entities Net Income AmountsAssociatedWithVariableInterestEntitiesNetIncome	24000000	USD
CY2009	sre	Amounts Associated With Variable Interest Entities Earnings Losses Attributable Noncontrolling Interests AmountsAssociatedWithVariableInterestEntitiesEarningsLossesAttributableNoncontrollingInterests	24000000	USD
CY2008	sre	Amounts Associated With Variable Interest Entities Other Income Expense Net AmountsAssociatedWithVariableInterestEntitiesOtherIncomeExpenseNet	-54000000	USD
CY2008	sre	Amounts Associated With Variable Interest Entities Net Income AmountsAssociatedWithVariableInterestEntitiesNetIncome	-54000000	USD
CY2008	sre	Amounts Associated With Variable Interest Entities Earnings Losses Attributable Noncontrolling Interests AmountsAssociatedWithVariableInterestEntitiesEarningsLossesAttributableNoncontrollingInterests	-54000000	USD
CY2009Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	1313000000	USD
CY2008Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	1177000000	USD
CY2010	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	77000000	USD
CY2009	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	75000000	USD
CY2010	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	10000000	USD
CY2009	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	17000000	USD
CY2010	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	17000000	USD
CY2009	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	5000000	USD
CY2010	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	85000000	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-229000000	USD
CY2009Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-276000000	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-15000000	USD
CY2009Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-2000000	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	1000000	USD
CY2009Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	9000000	USD
CY2010Q4	sre	Accumulated Other Comprehensive Income Loss Unamortized Net Actuarial Gain Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossUnamortizedNetActuarialGainLossNetOfTax	-88000000	USD
CY2009Q4	sre	Accumulated Other Comprehensive Income Loss Unamortized Net Actuarial Gain Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossUnamortizedNetActuarialGainLossNetOfTax	-102000000	USD
CY2010Q4	sre	Accumulated Other Comprehensive Income Loss Unamortized Prior Service Credit Cost Net Of Tax AccumulatedOtherComprehensiveIncomeLossUnamortizedPriorServiceCreditCostNetOfTax	1000000	USD
CY2009Q4	sre	Accumulated Other Comprehensive Income Loss Unamortized Prior Service Credit Cost Net Of Tax AccumulatedOtherComprehensiveIncomeLossUnamortizedPriorServiceCreditCostNetOfTax	2000000	USD
CY2010Q4	sre	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Income Tax Expense Benefit AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectIncomeTaxExpenseBenefit	-12000000	USD
CY2009Q4	sre	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Income Tax Expense Benefit AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectIncomeTaxExpenseBenefit	-3000000	USD
CY2010Q4	sre	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Income Tax Expense Benefit AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentIncomeTaxExpenseBenefit	1000000	USD
CY2009Q4	sre	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Income Tax Expense Benefit AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentIncomeTaxExpenseBenefit	3000000	USD
CY2010Q4	sre	Accumulated Other Comprehensive Income Loss Unamortized Net Actuarial Gain Loss Income Tax Expense Benefit AccumulatedOtherComprehensiveIncomeLossUnamortizedNetActuarialGainLossIncomeTaxExpenseBenefit	-60000000	USD
CY2009Q4	sre	Accumulated Other Comprehensive Income Loss Unamortized Net Actuarial Gain Loss Income Tax Expense Benefit AccumulatedOtherComprehensiveIncomeLossUnamortizedNetActuarialGainLossIncomeTaxExpenseBenefit	-70000000	USD
CY2010Q4	sre	Accumulated Other Comprehensive Income Loss Unamortized Prior Service Credit Cost Income Tax Expense Benefit AccumulatedOtherComprehensiveIncomeLossUnamortizedPriorServiceCreditCostIncomeTaxExpenseBenefit	1000000	USD
CY2009Q4	sre	Accumulated Other Comprehensive Income Loss Unamortized Prior Service Credit Cost Income Tax Expense Benefit AccumulatedOtherComprehensiveIncomeLossUnamortizedPriorServiceCreditCostIncomeTaxExpenseBenefit	1000000	USD
CY2010Q4	sre	Accumulated Other Comprehensive Income Loss Income Tax Expense Benefit AccumulatedOtherComprehensiveIncomeLossIncomeTaxExpenseBenefit	-70000000	USD
CY2009Q4	sre	Accumulated Other Comprehensive Income Loss Income Tax Expense Benefit AccumulatedOtherComprehensiveIncomeLossIncomeTaxExpenseBenefit	-69000000	USD
CY2010	us-gaap	Regulated Operating Revenue Gas RegulatedOperatingRevenueGas	4291000000	USD
CY2009	us-gaap	Regulated Operating Revenue Gas RegulatedOperatingRevenueGas	3801000000	USD
CY2008	us-gaap	Regulated Operating Revenue Gas RegulatedOperatingRevenueGas	5419000000	USD
CY2010	sre	Regulated Operating Revenue Electric RegulatedOperatingRevenueElectric	2528000000	USD
CY2009	sre	Regulated Operating Revenue Electric RegulatedOperatingRevenueElectric	2419000000	USD
CY2008	sre	Regulated Operating Revenue Electric RegulatedOperatingRevenueElectric	2553000000	USD
CY2010	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	4000000	USD
CY2009	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	3000000	USD
CY2009	us-gaap	Finite Lived Intangible Assets Amortization Expense FiniteLivedIntangibleAssetsAmortizationExpense	10000000	USD
CY2008	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-2000000	USD
CY2010	sre	Revenues From Transactions With Joint Venture RevenuesFromTransactionsWithJointVenture	280000000	USD
CY2009	sre	Revenues From Transactions With Joint Venture RevenuesFromTransactionsWithJointVenture	87000000	USD
CY2008	sre	Revenues From Transactions With Joint Venture RevenuesFromTransactionsWithJointVenture	76000000	USD
CY2010	sre	Cost Of Natural Gas From Transactions With Joint Venture CostOfNaturalGasFromTransactionsWithJointVenture	409000000	USD
CY2009	sre	Cost Of Natural Gas From Transactions With Joint Venture CostOfNaturalGasFromTransactionsWithJointVenture	110000000	USD
CY2008	sre	Cost Of Natural Gas From Transactions With Joint Venture CostOfNaturalGasFromTransactionsWithJointVenture	56000000	USD
CY2010Q4	sre	Transactions With Joint Venture Fixed Price Contracts And Other Derivatives Net Asset Liability TransactionsWithJointVentureFixedPriceContractsAndOtherDerivativesNetAssetLiability	-18000000	USD
CY2009Q4	sre	Transactions With Joint Venture Fixed Price Contracts And Other Derivatives Net Asset Liability TransactionsWithJointVentureFixedPriceContractsAndOtherDerivativesNetAssetLiability	-40000000	USD
CY2010Q4	sre	Transactions With Joint Venture Due To Joint Venture TransactionsWithJointVentureDueToJointVenture	35000000	USD
CY2009Q4	sre	Transactions With Joint Venture Due To Joint Venture TransactionsWithJointVentureDueToJointVenture	29000000	USD
CY2010Q4	sre	Transactions With Joint Venture Due From Joint Venture TransactionsWithJointVentureDueFromJointVenture	34000000	USD
CY2009Q4	sre	Transactions With Joint Venture Due From Joint Venture TransactionsWithJointVentureDueFromJointVenture	41000000	USD
CY2010	us-gaap	Finite Lived Intangible Assets Amortization Expense FiniteLivedIntangibleAssetsAmortizationExpense	10000000	USD
CY2008	us-gaap	Finite Lived Intangible Assets Amortization Expense FiniteLivedIntangibleAssetsAmortizationExpense	3000000	USD
CY2010	sre	Finite Lived Intangible Assets Future Amortization Expense Per Year FiniteLivedIntangibleAssetsFutureAmortizationExpensePerYear	10000000	USD
CY2009	sre	Write Off Of Long Lived Assets Portion Attributable To Noncontrolling Interest WriteOffOfLongLivedAssetsPortionAttributableToNoncontrollingInterest	33000000	USD
CY2010	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	341000000	USD
CY2009	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	247000000	USD
CY2009	sre	Write Off Of Long Lived Assets Net Of Tax WriteOffOfLongLivedAssetsNetOfTax	97000000	USD
CY2009	sre	Write Off Of Long Lived Assets Portion Attributable To Parent Net Of Tax WriteOffOfLongLivedAssetsPortionAttributableToParentNetOfTax	64000000	USD
CY2010Q2	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	18000000	USD
CY2008Q4	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	62000000	USD
CY2010Q4	us-gaap	Variable Interest Carrying Amount VariableInterestCarryingAmount	113000000	USD
CY2009Q4	us-gaap	Variable Interest Carrying Amount VariableInterestCarryingAmount	146000000	USD
CY2010Q4	sre	Secured Debt Vie SecuredDebtVIE	365000000	USD
CY2010Q4	sre	Restricted Cash And Cash Equivalents Total RestrictedCashAndCashEquivalentsTotal	158000000	USD
CY2009Q4	sre	Restricted Cash And Cash Equivalents Total RestrictedCashAndCashEquivalentsTotal	35000000	USD
CY2008Q2	sre	Gain On Sale Of Businesses Joint Venture GainOnSaleOfBusinessesJointVenture	67000000	USD
CY2008Q2	sre	Proceeds From Sale Of Businesses Joint Venture ProceedsFromSaleOfBusinessesJointVenture	1200000000	USD
CY2008Q2	sre	Equity Contribution Joint Venture EquityContributionJointVenture	1600000000	USD
CY2008Q2	sre	Equity Contribution Joint Venture Partner EquityContributionJointVenturePartner	1665000000	USD
CY2010	sre	Estimated Proceeds From Joint Venture Sales Of Businesses And Related Cash Distributions Maximum EstimatedProceedsFromJointVentureSalesOfBusinessesAndRelatedCashDistributionsMaximum	1900000000	USD
CY2010	sre	Estimated Cash Distributions From Joint Venture Related To Sales Of Businesses Minimum EstimatedCashDistributionsFromJointVentureRelatedToSalesOfBusinessesMinimum	500000000	USD
CY2010	sre	Estimated Cash Distributions From Joint Venture Related To Sales Of Businesses Maximum EstimatedCashDistributionsFromJointVentureRelatedToSalesOfBusinessesMaximum	600000000	USD
CY2010Q4	sre	Equity Method Goodwill Including Foreign Currency Translation Adjustments EquityMethodGoodwillIncludingForeignCurrencyTranslationAdjustments	333000000	USD
CY2009Q4	sre	Equity Method Goodwill Including Foreign Currency Translation Adjustments EquityMethodGoodwillIncludingForeignCurrencyTranslationAdjustments	253000000	USD
CY2009Q4	sre	Equity Method Goodwill Joint Venture EquityMethodGoodwillJointVenture	252000000	USD
CY2010	sre	Estimated Proceeds From Joint Venture Sales Of Businesses And Related Cash Distributions Minimum EstimatedProceedsFromJointVentureSalesOfBusinessesAndRelatedCashDistributionsMinimum	1800000000	USD
CY2010Q4	sre	Undistributed Earnings Equity Method Investments UndistributedEarningsEquityMethodInvestments	570000000	USD
CY2009Q4	sre	Undistributed Earnings Equity Method Investments UndistributedEarningsEquityMethodInvestments	692000000	USD
CY2010Q4	sre	Equity Method Goodwill Excluding Foreign Currency Translation Adjustments EquityMethodGoodwillExcludingForeignCurrencyTranslationAdjustments	317000000	USD
CY2009Q4	sre	Equity Method Goodwill Excluding Foreign Currency Translation Adjustments EquityMethodGoodwillExcludingForeignCurrencyTranslationAdjustments	254000000	USD
CY2010Q4	us-gaap	Gain Contingency Unrecorded Amount GainContingencyUnrecordedAmount	172000000	USD
CY2010	us-gaap	Litigation Settlement Gross LitigationSettlementGross	48000000	USD
CY2006	us-gaap	Equity Method Investment Other Than Temporary Impairment EquityMethodInvestmentOtherThanTemporaryImpairment	221000000	USD
CY2010Q3	us-gaap	Equity Method Investment Other Than Temporary Impairment EquityMethodInvestmentOtherThanTemporaryImpairment	24000000	USD
CY2010Q4	us-gaap	Equity Method Investment Other Than Temporary Impairment EquityMethodInvestmentOtherThanTemporaryImpairment	20000000	USD
CY2010	sre	Equity Earnings Losses From Joint Venture Before Impairment Charge EquityEarningsLossesFromJointVentureBeforeImpairmentCharge	15000000	USD
CY2009	sre	Equity Earnings Losses From Joint Venture Before Impairment Charge EquityEarningsLossesFromJointVentureBeforeImpairmentCharge	463000000	USD
CY2010	sre	Distributable Income Of Joint Venture DistributableIncomeOfJointVenture	53000000	USD
CY2009	sre	Distributable Income Of Joint Venture DistributableIncomeOfJointVenture	300000000	USD
	sre	Investment In Joint Venture First Tranche Partnership Income Amount InvestmentInJointVentureFirstTranchePartnershipIncomeAmount	500000000	USD
CY2010Q4	sre	Investment In Bonds Related Party Carrying Value InvestmentInBondsRelatedPartyCarryingValue	57000000	USD
CY2009Q4	sre	Investment In Bonds Related Party Carrying Value InvestmentInBondsRelatedPartyCarryingValue	51000000	USD
CY2010Q4	sre	Equity Method Investment Cumulative Foreign Currency Translation Adjustments EquityMethodInvestmentCumulativeForeignCurrencyTranslationAdjustments	270000000	USD
CY2010	sre	Estimated Proceeds From Sales Of Joint Venture Businesses EstimatedProceedsFromSalesOfJointVentureBusinesses	1300000000	USD
CY2010Q4	sre	Equity Method Investment Other Than Temporary Impairment Related Tax Benefit EquityMethodInvestmentOtherThanTemporaryImpairmentRelatedTaxBenefit	15000000	USD
CY2010Q3	sre	Investment In Joint Venture Other Than Temporary Impairment InvestmentInJointVentureOtherThanTemporaryImpairment	305000000	USD
CY2010Q3	sre	Investment In Joint Venture Other Than Temporary Impairment After Tax InvestmentInJointVentureOtherThanTemporaryImpairmentAfterTax	139000000	USD
CY2010Q4	sre	Investment In Bonds Related Party Historical Cost InvestmentInBondsRelatedPartyHistoricalCost	50000000	USD
CY2010	sre	Investment In Bonds Related Party Rate InvestmentInBondsRelatedPartyRate	0.0275	pure
	sre	Investment In Joint Venture Preferred Return On Capital InvestmentInJointVenturePreferredReturnOnCapital	0.15	pure
	sre	Investment In Joint Venture Partner Preferred Return On Capital InvestmentInJointVenturePartnerPreferredReturnOnCapital	0.15	pure
	sre	Investment In Joint Venture Share Of First Tranche Partnership Income InvestmentInJointVentureShareOfFirstTranchePartnershipIncome	0.7	pure
	sre	Investment In Joint Venture Partner Share Of First Tranche Partnership Income InvestmentInJointVenturePartnerShareOfFirstTranchePartnershipIncome	0.3	pure
	sre	Investment In Joint Venture Share Of Second Tranche Partnership Income InvestmentInJointVentureShareOfSecondTranchePartnershipIncome	0.3	pure
	sre	Investment In Joint Venture Partner Share Of Second Tranche Partnership Income InvestmentInJointVenturePartnerShareOfSecondTranchePartnershipIncome	0.7	pure
CY2010Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	328000000	USD
CY2010Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	273000000	USD
CY2010Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	683000000	USD
CY2010Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	397000000	USD
CY2010Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	281000000	USD
CY2010Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	7165000000	USD
CY2010Q4	sre	Long Term Debt Maturities Total Repayments Of Principal LongTermDebtMaturitiesTotalRepaymentsOfPrincipal	9127000000	USD
CY2010Q4	sre	Long Term Debt Callable In Next Twelve Months LongTermDebtCallableInNextTwelveMonths	477000000	USD
CY2010Q4	sre	Callable Long Term Debt CallableLongTermDebt	1010000000	USD
CY2010Q4	sre	Callable Long Term Debt Subject To Make Whole Provisions CallableLongTermDebtSubjectToMakeWholeProvisions	6802000000	USD
CY2010Q4	sre	Long Term Debt Callable In Year Three LongTermDebtCallableInYearThree	45000000	USD
CY2010Q4	sre	Long Term Debt Callable In Year Four LongTermDebtCallableInYearFour	124000000	USD
CY2010Q4	sre	Long Term Debt Callable In Year Five LongTermDebtCallableInYearFive	105000000	USD
CY2010Q4	sre	Long Term Debt Callable After Year Five LongTermDebtCallableAfterYearFive	259000000	USD
CY2010Q4	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	3800000000	USD
CY2010Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	2600000000	USD
CY2010Q4	sre	Line Of Credit Facility Increase Decrease In Maximum Borrowing Capacity Under New Facility LineOfCreditFacilityIncreaseDecreaseInMaximumBorrowingCapacityUnderNewFacility	-500000000	USD
CY2010Q4	sre	Long Term Debt Unsecured LongTermDebtUnsecured	4300000000	USD
CY2008Q2	sre	Guarantee Fair Value At Origin GuaranteeFairValueAtOrigin	5000000	USD
CY2010Q4	sre	Guarantor Obligations Liabilities Of Joint Venture GuarantorObligationsLiabilitiesOfJointVenture	462000000	USD
CY2010Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0046	pure
CY2010	sre	Payments To Acquire Industrial Development Bonds PaymentsToAcquireIndustrialDevelopmentBonds	42000000	USD
CY2010Q4	sre	Maximum Long Term Debt Available Industrial Development Bonds MaximumLongTermDebtAvailableIndustrialDevelopmentBonds	265000000	USD
CY2009	sre	Payments To Acquire Industrial Development Bonds PaymentsToAcquireIndustrialDevelopmentBonds	75000000	USD
CY2009Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0079	pure
CY2006	sre	Payments To Acquire Industrial Development Bonds PaymentsToAcquireIndustrialDevelopmentBonds	128000000	USD
CY2008	sre	Payments To Acquire Industrial Development Bonds PaymentsToAcquireIndustrialDevelopmentBonds	413000000	USD
CY2010Q4	sre	Esop Debt Repriced ESOPDebtRepriced	32000000	USD
	sre	Esop Debt Principal Repayments ESOPDebtPrincipalRepayments	51000000	USD
CY2010	sre	Esop Debt Interest Expense ESOPDebtInterestExpense	2000000	USD
CY2009	sre	Esop Debt Interest Expense ESOPDebtInterestExpense	3000000	USD
CY2008	sre	Esop Debt Interest Expense ESOPDebtInterestExpense	4000000	USD
CY2010	sre	Esop Debt Dividends Used For Debt Service ESOPDebtDividendsUsedForDebtService	1000000	USD
CY2009	sre	Esop Debt Dividends Used For Debt Service ESOPDebtDividendsUsedForDebtService	2000000	USD
CY2008	sre	Esop Debt Dividends Used For Debt Service ESOPDebtDividendsUsedForDebtService	2000000	USD
	sre	Shares Held In Employee Stock Ownership Plan Released SharesHeldInEmployeeStockOwnershipPlanReleased	983606	shares
	sre	Payments To Acquire Industrial Development Bonds PaymentsToAcquireIndustrialDevelopmentBonds	117000000	USD
CY2010Q4	sre	Industrial Development Bonds Interest Rate Stated Percentage IndustrialDevelopmentBondsInterestRateStatedPercentage	0.045	pure
CY2010Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	514000000	USD
CY2010Q4	sre	Gross Unrealized Gains On Available For Sale Securities GrossUnrealizedGainsOnAvailableForSaleSecurities	261000000	USD
CY2010Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	769000000	USD
CY2009Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	485000000	USD
CY2009Q4	sre	Gross Unrealized Gains On Available For Sale Securities GrossUnrealizedGainsOnAvailableForSaleSecurities	204000000	USD
CY2009Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	678000000	USD
CY2010Q4	sre	Gross Unrealized Losses On Available For Sale Securities GrossUnrealizedLossesOnAvailableForSaleSecurities	6000000	USD
CY2009Q4	sre	Gross Unrealized Losses On Available For Sale Securities GrossUnrealizedLossesOnAvailableForSaleSecurities	11000000	USD
CY2010	us-gaap	Available For Sale Securities Gross Realized Gains Losses Sale Proceeds AvailableForSaleSecuritiesGrossRealizedGainsLossesSaleProceeds	351000000	USD
CY2010	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	11000000	USD
CY2010	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	11000000	USD
CY2009	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	33000000	USD
CY2008	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	40000000	USD
CY2009	us-gaap	Available For Sale Securities Gross Realized Gains Losses Sale Proceeds AvailableForSaleSecuritiesGrossRealizedGainsLossesSaleProceeds	224000000	USD
CY2009	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	6000000	USD
CY2008	us-gaap	Available For Sale Securities Gross Realized Gains Losses Sale Proceeds AvailableForSaleSecuritiesGrossRealizedGainsLossesSaleProceeds	458000000	USD
CY2008	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	18000000	USD
CY2010Q4	sre	Asset Retirement Obligation Nuclear Power Plant AssetRetirementObligationNuclearPowerPlant	492000000	USD
CY2010	sre	Effective Income Tax Rate Reconciliation Utility Repair Allowance EffectiveIncomeTaxRateReconciliationUtilityRepairAllowance	-0.02	USD
CY2010	sre	Effective Income Tax Rate Reconciliation Self Developed Software Expenditures EffectiveIncomeTaxRateReconciliationSelfDevelopedSoftwareExpenditures	-0.05	USD
CY2009	sre	Effective Income Tax Rate Reconciliation Self Developed Software Expenditures EffectiveIncomeTaxRateReconciliationSelfDevelopedSoftwareExpenditures	-0.03	USD
CY2010Q3	sre	Utility Share Of Nuclear Decommissioning Costs UtilityShareOfNuclearDecommissioningCosts	768000000	USD
CY2009	sre	Effective Income Tax Rate Reconciliation Allowance For Equity Funds Used During Construction EffectiveIncomeTaxRateReconciliationAllowanceForEquityFundsUsedDuringConstruction	-0.01	USD
CY2008	sre	Effective Income Tax Rate Reconciliation Allowance For Equity Funds Used During Construction EffectiveIncomeTaxRateReconciliationAllowanceForEquityFundsUsedDuringConstruction	-0.01	USD
CY2010	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.12	USD
CY2009	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.05	USD
CY2008	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.02	USD
CY2010	us-gaap	Effective Income Tax Rate Reconciliation Prior Year Income Taxes EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes	-0.03	USD
CY2009	us-gaap	Effective Income Tax Rate Reconciliation Prior Year Income Taxes EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes	-0.02	USD
CY2008	us-gaap	Effective Income Tax Rate Reconciliation Prior Year Income Taxes EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes	-0.02	USD
CY2010	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35	USD
CY2009	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35	USD
CY2008	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35	USD
CY2010	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Depreciation EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepreciation	0.06	USD
CY2009	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Depreciation EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepreciation	0.03	USD
CY2008	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Depreciation EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepreciation	0.03	USD
CY2009	sre	Effective Income Tax Rate Reconciliation Utility Repair Allowance EffectiveIncomeTaxRateReconciliationUtilityRepairAllowance	-0.01	USD
CY2008	sre	Effective Income Tax Rate Reconciliation Utility Repair Allowance EffectiveIncomeTaxRateReconciliationUtilityRepairAllowance	-0.01	USD
CY2009	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.03	USD
CY2008	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.03	USD
CY2010	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	-0.07	USD
CY2009	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	-0.01	USD
CY2008	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	-0.01	USD
CY2010	sre	Effective Income Tax Rate Reconciliation Allowance For Equity Funds Used During Construction EffectiveIncomeTaxRateReconciliationAllowanceForEquityFundsUsedDuringConstruction	-0.03	USD
CY2008	sre	Effective Income Tax Rate Reconciliation Self Developed Software Expenditures EffectiveIncomeTaxRateReconciliationSelfDevelopedSoftwareExpenditures	-0.02	USD
CY2010	sre	Effective Income Tax Rate Reconciliation Foreign Exchange And Inflation Effects EffectiveIncomeTaxRateReconciliationForeignExchangeAndInflationEffects	0.02	USD
CY2009	sre	Effective Income Tax Rate Reconciliation Foreign Exchange And Inflation Effects EffectiveIncomeTaxRateReconciliationForeignExchangeAndInflationEffects	0.01	USD
CY2008	sre	Effective Income Tax Rate Reconciliation Foreign Exchange And Inflation Effects EffectiveIncomeTaxRateReconciliationForeignExchangeAndInflationEffects	-0.03	USD
CY2010	sre	Effective Income Tax Rate Reconciliation Variable Interest Entities EffectiveIncomeTaxRateReconciliationVariableInterestEntities	0.01	USD
CY2009	sre	Effective Income Tax Rate Reconciliation Variable Interest Entities EffectiveIncomeTaxRateReconciliationVariableInterestEntities	-0.01	USD
CY2008	sre	Effective Income Tax Rate Reconciliation Variable Interest Entities EffectiveIncomeTaxRateReconciliationVariableInterestEntities	0.01	USD
CY2009	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	0.01	USD
CY2010	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0.02	USD
CY2010	sre	Effective Income Tax Rate Reconciliation Impairment Equity Method Investment EffectiveIncomeTaxRateReconciliationImpairmentEquityMethodInvestment	-0.02	USD
CY2010	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.01	USD
CY2010	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.13	USD
CY2009	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.29	USD
CY2008	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.3	USD
CY2010	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	447000000	USD
CY2009	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	1007000000	USD
CY2008	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	1199000000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	339000000	USD
CY2009	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	469000000	USD
CY2009Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	2252000000	USD
CY2008	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	244000000	USD
CY2010	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	27000000	USD
CY2009	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	39000000	USD
CY2008	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-10000000	USD
CY2010	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-3000000	USD
CY2009	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	40000000	USD
CY2008	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	28000000	USD
CY2010	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	30000000	USD
CY2009	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	48000000	USD
CY2008	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	96000000	USD
CY2010	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	54000000	USD
CY2009	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	127000000	USD
CY2008	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	114000000	USD
CY2010	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-11000000	USD
CY2009	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	216000000	USD
CY2008	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	359000000	USD
CY2010	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	36000000	USD
CY2009	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	24000000	USD
CY2008	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	29000000	USD
CY2010	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	27000000	USD
CY2009	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	58000000	USD
CY2008	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-59000000	USD
CY2010	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	52000000	USD
CY2009	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	298000000	USD
CY2008	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	329000000	USD
CY2010	us-gaap	Investment Tax Credit InvestmentTaxCredit	-4000000	USD
CY2009	us-gaap	Investment Tax Credit InvestmentTaxCredit	-3000000	USD
CY2008	us-gaap	Investment Tax Credit InvestmentTaxCredit	-5000000	USD
CY2010Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	1965000000	USD
CY2009Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	1528000000	USD
CY2010Q4	us-gaap	Deferred Tax Liabilities Regulatory Assets And Liabilities DeferredTaxLiabilitiesRegulatoryAssetsAndLiabilities	535000000	USD
CY2009Q4	us-gaap	Deferred Tax Liabilities Regulatory Assets And Liabilities DeferredTaxLiabilitiesRegulatoryAssetsAndLiabilities	501000000	USD
CY2010Q4	us-gaap	Deferred Tax Liabilities Tax Deferred Income DeferredTaxLiabilitiesTaxDeferredIncome	23000000	USD
CY2009Q4	us-gaap	Deferred Tax Liabilities Tax Deferred Income DeferredTaxLiabilitiesTaxDeferredIncome	25000000	USD
CY2010Q4	sre	Deferred Tax Liabilities Loss On Reacquired Debt DeferredTaxLiabilitiesLossOnReacquiredDebt	15000000	USD
CY2009Q4	sre	Deferred Tax Liabilities Loss On Reacquired Debt DeferredTaxLiabilitiesLossOnReacquiredDebt	18000000	USD
CY2010Q4	sre	Deferred Tax Liabilities Property Taxes DeferredTaxLiabilitiesPropertyTaxes	38000000	USD
CY2009Q4	sre	Deferred Tax Liabilities Property Taxes DeferredTaxLiabilitiesPropertyTaxes	34000000	USD
CY2009Q4	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	85000000	USD
CY2010Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	72000000	USD
CY2009Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	61000000	USD
CY2010Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	2648000000	USD
CY2010Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards General Business DeferredTaxAssetsTaxCreditCarryforwardsGeneralBusiness	34000000	USD
CY2009Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards General Business DeferredTaxAssetsTaxCreditCarryforwardsGeneralBusiness	35000000	USD
CY2010Q4	sre	Deferred Tax Assets Equity Method Losses DeferredTaxAssetsEquityMethodLosses	3000000	USD
CY2009Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	7000000	USD
CY2009Q4	sre	Deferred Tax Assets Equity Method Losses DeferredTaxAssetsEquityMethodLosses	3000000	USD
CY2010Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	40000000	USD
CY2009Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	41000000	USD
CY2009Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	21000000	USD
CY2010Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Other DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther	158000000	USD
CY2009Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Other DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther	177000000	USD
CY2010Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits	467000000	USD
CY2009Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits	510000000	USD
CY2010Q4	sre	Deferred Tax Assets Investment In Noncontrolled Affiliates DeferredTaxAssetsInvestmentInNoncontrolledAffiliates	83000000	USD
CY2010Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	52000000	USD
CY2010Q4	sre	Deferred Tax Assets State Income Taxes DeferredTaxAssetsStateIncomeTaxes	73000000	USD
CY2009Q4	sre	Deferred Tax Assets State Income Taxes DeferredTaxAssetsStateIncomeTaxes	50000000	USD
CY2010Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	10000000	USD
CY2010Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Loss Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves	304000000	USD
CY2009Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Loss Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves	129000000	USD
CY2010Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	1224000000	USD
CY2009Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	973000000	USD
CY2010Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	62000000	USD
CY2009Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	29000000	USD
CY2010Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	1162000000	USD
CY2009Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	944000000	USD
CY2010Q4	sre	Deferred Tax Liabilities Net DeferredTaxLiabilitiesNet	1486000000	USD
CY2009Q4	sre	Deferred Tax Liabilities Net DeferredTaxLiabilitiesNet	1308000000	USD
CY2010Q4	sre	Deferred Tax Assets Liabilities Current Net DeferredTaxAssetsLiabilitiesCurrentNet	-75000000	USD
CY2009Q4	sre	Deferred Tax Assets Liabilities Current Net DeferredTaxAssetsLiabilitiesCurrentNet	-10000000	USD
CY2010Q4	sre	Deferred Tax Assets Liabilities Noncurrent Net DeferredTaxAssetsLiabilitiesNoncurrentNet	1561000000	USD
CY2009Q4	sre	Deferred Tax Assets Liabilities Noncurrent Net DeferredTaxAssetsLiabilitiesNoncurrentNet	1318000000	USD
CY2010Q4	sre	Unrecognized Tax Benefits That Would Decrease Effective Tax Rate UnrecognizedTaxBenefitsThatWouldDecreaseEffectiveTaxRate	-76000000	USD
CY2009Q4	sre	Unrecognized Tax Benefits That Would Decrease Effective Tax Rate UnrecognizedTaxBenefitsThatWouldDecreaseEffectiveTaxRate	-76000000	USD
CY2008Q4	sre	Unrecognized Tax Benefits That Would Decrease Effective Tax Rate UnrecognizedTaxBenefitsThatWouldDecreaseEffectiveTaxRate	-64000000	USD
CY2010Q4	sre	Unrecognized Tax Benefits That Would Increase Effective Tax Rate UnrecognizedTaxBenefitsThatWouldIncreaseEffectiveTaxRate	5000000	USD
CY2009Q4	sre	Unrecognized Tax Benefits That Would Increase Effective Tax Rate UnrecognizedTaxBenefitsThatWouldIncreaseEffectiveTaxRate	13000000	USD
CY2008Q4	sre	Unrecognized Tax Benefits That Would Increase Effective Tax Rate UnrecognizedTaxBenefitsThatWouldIncreaseEffectiveTaxRate	17000000	USD
CY2009Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	94000000	USD
CY2008Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	104000000	USD
CY2007Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	131000000	USD
CY2010	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	29000000	USD
CY2009	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	44000000	USD
CY2008	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	23000000	USD
CY2010	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	-4000000	USD
CY2010	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	5000000	USD
CY2010	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	-9000000	USD
CY2010	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	-18000000	USD
CY2010Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	97000000	USD
CY2009	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	-3000000	USD
CY2009	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	15000000	USD
CY2009	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	-54000000	USD
CY2008	us-gaap	Unrecognized Tax Benefits Income Tax Penalties Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesExpense	1000000	USD
CY2010	sre	Increase Decrease In Valuation Allowance IncreaseDecreaseInValuationAllowance	33000000	USD
CY2010Q4	sre	Undistributed Foreign Earnings UndistributedForeignEarnings	1900000000	USD
CY2009	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	-12000000	USD
CY2008	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromCurrentPeriodTaxPositions	-5000000	USD
CY2008	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	-38000000	USD
CY2008	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	-7000000	USD
CY2008	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	-4000000	USD
CY2008	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	4000000	USD
CY2009	us-gaap	Unrecognized Tax Benefits Income Tax Penalties Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesExpense	4000000	USD
CY2008	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	18000000	USD
CY2010Q4	us-gaap	Significant Change In Unrecognized Tax Benefits Is Reasonably Possible Amount Of Unrecorded Benefit SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit	-41000000	USD
CY2009Q4	us-gaap	Significant Change In Unrecognized Tax Benefits Is Reasonably Possible Amount Of Unrecorded Benefit SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit	-31000000	USD
CY2008Q4	us-gaap	Significant Change In Unrecognized Tax Benefits Is Reasonably Possible Amount Of Unrecorded Benefit SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit	-26000000	USD
CY2010	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	-1000000	USD
CY2010	us-gaap	Unrecognized Tax Benefits Income Tax Penalties Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesExpense	4000000	USD
CY2009	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	2000000	USD
CY2010	sre	Defined Benefit Plan Benefits Paid Plan Assets DefinedBenefitPlanBenefitsPaidPlanAssets	210000000	USD
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Weighted Average Remaining Contractual Term ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageRemainingContractualTerm	4.0	USD
CY2010Q4	us-gaap	Defined Benefit Plan Year That Rate Reaches Ultimate Trend Rate DefinedBenefitPlanYearThatRateReachesUltimateTrendRate	2016
CY2009Q4	sre	Savings Plan Market Value Of Employer Stock Held By Plan SavingsPlanMarketValueOfEmployerStockHeldByPlan	919000000	USD
CY2010Q4	us-gaap	Employee Stock Ownership Plan Esop Deferred Shares Fair Value EmployeeStockOwnershipPlanESOPDeferredSharesFairValue	27000000	USD
CY2010	sre	Savings Plan Employer Contributions SavingsPlanEmployerContributions	31000000	USD
CY2008	sre	Savings Plan Employer Contributions SavingsPlanEmployerContributions	32000000	USD
CY2010Q4	sre	Dedicated Assets Supporting Supplemental Benefit Plans DedicatedAssetsSupportingSupplementalBenefitPlans	442000000	USD
CY2009Q4	sre	Dedicated Assets Supporting Supplemental Benefit Plans DedicatedAssetsSupportingSupplementalBenefitPlans	453000000	USD
CY2010Q4	sre	Savings Plan Market Value Of Employer Stock Held By Plan SavingsPlanMarketValueOfEmployerStockHeldByPlan	847000000	USD
CY2009Q4	us-gaap	Employee Stock Ownership Plan Esop Deferred Shares Fair Value EmployeeStockOwnershipPlanESOPDeferredSharesFairValue	49000000	USD
CY2010	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	34000000	USD
CY2009	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	34000000	USD
CY2008	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	44000000	USD
CY2010	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	13000000	USD
CY2009	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	13000000	USD
CY2008	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	17000000	USD
CY2010	sre	Employee Service Share Based Compensation Compensation Expense Net Of Tax EmployeeServiceShareBasedCompensationCompensationExpenseNetOfTax	21000000	USD
CY2009	sre	Employee Service Share Based Compensation Compensation Expense Net Of Tax EmployeeServiceShareBasedCompensationCompensationExpenseNetOfTax	21000000	USD
CY2008	sre	Employee Service Share Based Compensation Compensation Expense Net Of Tax EmployeeServiceShareBasedCompensationCompensationExpenseNetOfTax	27000000	USD
CY2010	sre	Employee Service Share Based Compensation Compensation Expense Net Of Tax Per Basic Share EmployeeServiceShareBasedCompensationCompensationExpenseNetOfTaxPerBasicShare	0.09	USD
CY2009	sre	Employee Service Share Based Compensation Compensation Expense Net Of Tax Per Basic Share EmployeeServiceShareBasedCompensationCompensationExpenseNetOfTaxPerBasicShare	0.09	USD
CY2008	sre	Employee Service Share Based Compensation Compensation Expense Net Of Tax Per Basic Share EmployeeServiceShareBasedCompensationCompensationExpenseNetOfTaxPerBasicShare	0.11	USD
CY2010	sre	Employee Service Share Based Compensation Compensation Expense Net Of Tax Per Diluted Share EmployeeServiceShareBasedCompensationCompensationExpenseNetOfTaxPerDilutedShare	0.08	USD
CY2009	sre	Employee Service Share Based Compensation Compensation Expense Net Of Tax Per Diluted Share EmployeeServiceShareBasedCompensationCompensationExpenseNetOfTaxPerDilutedShare	0.08	USD
CY2008	sre	Employee Service Share Based Compensation Compensation Expense Net Of Tax Per Diluted Share EmployeeServiceShareBasedCompensationCompensationExpenseNetOfTaxPerDilutedShare	0.11	USD
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm	5.2	USD
CY2009	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	5000000	USD
CY2008	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	5000000	USD
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	22000000	USD
CY2009	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	45000000	USD
CY2008	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	21000000	USD
CY2010	us-gaap	Employee Service Share Based Compensation Cash Received From Exercise Of Stock Options EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions	25000000	USD
CY2010	us-gaap	Employee Service Share Based Compensation Tax Benefit Realized From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromExerciseOfStockOptions	8000000	USD
CY2010Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	302478	shares
CY2010Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	56000000	USD
CY2010Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue	55000000	USD
CY2010Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue	50000000	USD
CY2009Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	5917347	shares
CY2009Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	40.93	USD
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	687600	shares
CY2010Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	55.80	USD
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriod	-912725	shares
CY2010Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	27.53	USD
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	-61750	shares
CY2010Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	5630472	shares
CY2010Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	44.79	USD
CY2010Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber	5576231	shares
CY2010Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice	44.70	USD
CY2010Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber	3815922	shares
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	53.47	USD
CY2010Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice	40.98	USD
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Remaining Contractual Term ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm	5.2	USD
CY2010Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	3759571	shares
CY2010	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	3000000	USD
CY2009	sre	Utility Incentive Awards Natural Gas Procurement UtilityIncentiveAwardsNaturalGasProcurement	7000000	USD
CY2008	sre	Utility Incentive Awards Natural Gas Procurement UtilityIncentiveAwardsNaturalGasProcurement	12000000	USD
CY2010	sre	Utility Incentive Awards Operational Incentives UtilityIncentiveAwardsOperationalIncentives	1000000	USD
CY2010Q4	sre	Interest Rate Derivatives Notional Amount Minimum InterestRateDerivativesNotionalAmountMinimum	215000000	USD
CY2009Q4	sre	Interest Rate Derivatives Notional Amount Minimum InterestRateDerivativesNotionalAmountMinimum	75000000	USD
CY2010Q4	sre	Interest Rate Derivatives Notional Amount Maximum InterestRateDerivativesNotionalAmountMaximum	355000000	USD
CY2009Q4	sre	Interest Rate Derivatives Notional Amount Maximum InterestRateDerivativesNotionalAmountMaximum	355000000	USD
CY2010	sre	Interest Rate Derivatives Maturities Minimum InterestRateDerivativesMaturitiesMinimum	2011
CY2009	sre	Interest Rate Derivatives Maturities Minimum InterestRateDerivativesMaturitiesMinimum	2010
CY2010	sre	Interest Rate Derivatives Maturities Maximum InterestRateDerivativesMaturitiesMaximum	2019
CY2009	sre	Interest Rate Derivatives Maturities Maximum InterestRateDerivativesMaturitiesMaximum	2019
CY2009Q4	sre	Fair Value Liabilities Measured On A Recurring Basis Commodity Contracts Subject To Rate Recovery FairValueLiabilitiesMeasuredOnARecurringBasisCommodityContractsSubjectToRateRecovery	9000000	USD
CY2008	us-gaap	Derivative Net Hedge Ineffectiveness Gain Loss DerivativeNetHedgeIneffectivenessGainLoss	-13000000	USD
CY2010	us-gaap	Cash Flow Hedge Gain Loss To Be Reclassified Within Twelve Months CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths	10000000	USD
CY2010Q4	us-gaap	Derivative Net Liability Position Aggregate Fair Value DerivativeNetLiabilityPositionAggregateFairValue	5000000	USD
CY2010Q4	us-gaap	Additional Collateral Aggregate Fair Value AdditionalCollateralAggregateFairValue	5000000	USD
CY2010Q4	us-gaap	Derivative Fair Value Gross Amount Not Offset Against Collateral Net DerivativeFairValueGrossAmountNotOffsetAgainstCollateralNet	32000000	USD
CY2009Q4	us-gaap	Derivative Fair Value Gross Amount Not Offset Against Collateral Net DerivativeFairValueGrossAmountNotOffsetAgainstCollateralNet	36000000	USD
CY2010Q4	sre	Fair Value Assets Measured On A Recurring Basis Nuclear Decommissioning Trusts Equity Securities FairValueAssetsMeasuredOnARecurringBasisNuclearDecommissioningTrustsEquitySecurities	460000000	USD
CY2010Q4	sre	Fair Value Assets Measured On A Recurring Basis Nuclear Decommissioning Trusts Us Debt Securities FairValueAssetsMeasuredOnARecurringBasisNuclearDecommissioningTrustsUSDebtSecurities	174000000	USD
CY2010Q4	sre	Fair Value Assets Measured On A Recurring Basis Nuclear Decommissioning Trusts Municipal Debt Securities FairValueAssetsMeasuredOnARecurringBasisNuclearDecommissioningTrustsMunicipalDebtSecurities	100000000	USD
CY2010Q4	sre	Fair Value Assets Measured On A Recurring Basis Nuclear Decommissioning Trusts Other Debt Securities FairValueAssetsMeasuredOnARecurringBasisNuclearDecommissioningTrustsOtherDebtSecurities	25000000	USD
CY2010Q4	sre	Fair Value Assets Measured On A Recurring Basis Nuclear Decommissioning Trusts Total Debt Securities FairValueAssetsMeasuredOnARecurringBasisNuclearDecommissioningTrustsTotalDebtSecurities	299000000	USD
CY2010Q4	sre	Fair Value Assets Measured On A Recurring Basis Nuclear Decommissioning Trusts Total FairValueAssetsMeasuredOnARecurringBasisNuclearDecommissioningTrustsTotal	759000000	USD
CY2010Q4	sre	Fair Value Assets Measured On A Recurring Basis Interest Rate Instruments FairValueAssetsMeasuredOnARecurringBasisInterestRateInstruments	34000000	USD
CY2010Q4	sre	Fair Value Assets Measured On A Recurring Basis Commodity Contracts Subject To Rate Recovery FairValueAssetsMeasuredOnARecurringBasisCommodityContractsSubjectToRateRecovery	28000000	USD
CY2010Q4	sre	Fair Value Assets Measured On A Recurring Basis Commodity Contracts Not Subject To Rate Recovery FairValueAssetsMeasuredOnARecurringBasisCommodityContractsNotSubjectToRateRecovery	53000000	USD
CY2010Q4	us-gaap	Fair Value Measured On Recurring Basis Investments FairValueMeasuredOnRecurringBasisInvestments	1000000	USD
CY2010Q4	sre	Fair Value Assets Measured On A Recurring Basis Total Assets At Fair Value FairValueAssetsMeasuredOnARecurringBasisTotalAssetsAtFairValue	875000000	USD
CY2010Q4	sre	Fair Value Liabilities Measured On A Recurring Basis Interest Rate Instruments FairValueLiabilitiesMeasuredOnARecurringBasisInterestRateInstruments	82000000	USD
CY2010Q4	sre	Fair Value Liabilities Measured On A Recurring Basis Commodity Contracts Subject To Rate Recovery FairValueLiabilitiesMeasuredOnARecurringBasisCommodityContractsSubjectToRateRecovery	8000000	USD
CY2010Q4	sre	Fair Value Liabilities Measured On A Recurring Basis Commodity Contracts Not Subject To Rate Recovery FairValueLiabilitiesMeasuredOnARecurringBasisCommodityContractsNotSubjectToRateRecovery	67000000	USD
CY2010Q4	sre	Fair Value Liabilities Measured On A Recurring Basis Total Liabilities At Fair Value FairValueLiabilitiesMeasuredOnARecurringBasisTotalLiabilitiesAtFairValue	157000000	USD
CY2009Q4	sre	Fair Value Assets Measured On A Recurring Basis Nuclear Decommissioning Trusts Equity Securities FairValueAssetsMeasuredOnARecurringBasisNuclearDecommissioningTrustsEquitySecurities	421000000	USD
CY2009Q4	sre	Fair Value Assets Measured On A Recurring Basis Nuclear Decommissioning Trusts Us Debt Securities FairValueAssetsMeasuredOnARecurringBasisNuclearDecommissioningTrustsUSDebtSecurities	150000000	USD
CY2009Q4	sre	Fair Value Assets Measured On A Recurring Basis Nuclear Decommissioning Trusts Municipal Debt Securities FairValueAssetsMeasuredOnARecurringBasisNuclearDecommissioningTrustsMunicipalDebtSecurities	85000000	USD
CY2009Q4	sre	Fair Value Assets Measured On A Recurring Basis Nuclear Decommissioning Trusts Other Debt Securities FairValueAssetsMeasuredOnARecurringBasisNuclearDecommissioningTrustsOtherDebtSecurities	13000000	USD
CY2009Q4	sre	Fair Value Assets Measured On A Recurring Basis Nuclear Decommissioning Trusts Total Debt Securities FairValueAssetsMeasuredOnARecurringBasisNuclearDecommissioningTrustsTotalDebtSecurities	248000000	USD
CY2009Q4	sre	Fair Value Assets Measured On A Recurring Basis Nuclear Decommissioning Trusts Total FairValueAssetsMeasuredOnARecurringBasisNuclearDecommissioningTrustsTotal	669000000	USD
CY2009Q4	sre	Fair Value Assets Measured On A Recurring Basis Interest Rate Instruments FairValueAssetsMeasuredOnARecurringBasisInterestRateInstruments	38000000	USD
CY2009Q4	sre	Fair Value Assets Measured On A Recurring Basis Commodity Contracts Subject To Rate Recovery FairValueAssetsMeasuredOnARecurringBasisCommodityContractsSubjectToRateRecovery	45000000	USD
CY2009Q4	sre	Fair Value Assets Measured On A Recurring Basis Commodity Contracts Not Subject To Rate Recovery FairValueAssetsMeasuredOnARecurringBasisCommodityContractsNotSubjectToRateRecovery	29000000	USD
CY2009Q4	us-gaap	Fair Value Measured On Recurring Basis Investments FairValueMeasuredOnRecurringBasisInvestments	1000000	USD
CY2009Q4	sre	Fair Value Assets Measured On A Recurring Basis Total Assets At Fair Value FairValueAssetsMeasuredOnARecurringBasisTotalAssetsAtFairValue	782000000	USD
CY2009Q4	sre	Fair Value Liabilities Measured On A Recurring Basis Interest Rate Instruments FairValueLiabilitiesMeasuredOnARecurringBasisInterestRateInstruments	59000000	USD
CY2009Q4	sre	Fair Value Liabilities Measured On A Recurring Basis Commodity Contracts Not Subject To Rate Recovery FairValueLiabilitiesMeasuredOnARecurringBasisCommodityContractsNotSubjectToRateRecovery	65000000	USD
CY2009Q4	sre	Fair Value Liabilities Measured On A Recurring Basis Total Liabilities At Fair Value FairValueLiabilitiesMeasuredOnARecurringBasisTotalLiabilitiesAtFairValue	133000000	USD
CY2009Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	10000000	USD
CY2010	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings	-16000000	USD
CY2010	sre	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Allocated Transmission Instruments FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAllocatedTransmissionInstruments	8000000	USD
CY2010Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	2000000	USD
CY2010	sre	Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss Included In Cost Of Electric Fuel And Purchased Power FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLossIncludedInCostOfElectricFuelAndPurchasedPower	-9000000	USD
CY2008Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	27000000	USD
CY2009	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings	-31000000	USD
CY2009	sre	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Allocated Transmission Instruments FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAllocatedTransmissionInstruments	15000000	USD
CY2009	sre	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements	1000000	USD
CY2009	sre	Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss Included In Cost Of Electric Fuel And Purchased Power FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLossIncludedInCostOfElectricFuelAndPurchasedPower	-16000000	USD
CY2007Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	401000000	USD
CY2008	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings	-79000000	USD
CY2008	sre	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Allocated Transmission Instruments FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAllocatedTransmissionInstruments	17000000	USD
CY2008	sre	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Issuances FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetIssuances	24000000	USD
CY2008	sre	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Assets Of Businesses Sold FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetsOfBusinessesSold	336000000	USD
CY2008	sre	Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss Included In Cost Of Electric Fuel And Purchased Power FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLossIncludedInCostOfElectricFuelAndPurchasedPower	27000000	USD
CY2010	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	3206000	shares
CY2009	sre	Utility Incentive Awards Operational Incentives UtilityIncentiveAwardsOperationalIncentives	1000000	USD
CY2010Q4	sre	Authorized Share Repurchase Program Maximum Repurchase Shares AuthorizedShareRepurchaseProgramMaximumRepurchaseShares	40000000	shares
CY2009	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	4045000	shares
CY2008	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	3772000	shares
CY2007Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	261214009	shares
CY2010	sre	Stock Issued During Period Shares Savings Plan Issuance StockIssuedDuringPeriodSharesSavingsPlanIssuance	560600	shares
CY2009	sre	Stock Issued During Period Shares Savings Plan Issuance StockIssuedDuringPeriodSharesSavingsPlanIssuance	1021023	shares
CY2010	sre	Shares Held In Employee Stock Ownership Plan Released SharesHeldInEmployeeStockOwnershipPlanReleased	363733	shares
CY2009	sre	Shares Held In Employee Stock Ownership Plan Released SharesHeldInEmployeeStockOwnershipPlanReleased	309023	shares
CY2008	sre	Shares Held In Employee Stock Ownership Plan Released SharesHeldInEmployeeStockOwnershipPlanReleased	310850	shares
CY2010	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	912725	shares
CY2009	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	1835184	shares
CY2008	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	683858	shares
CY2009	us-gaap	Stock Issued During Period Shares Restricted Stock Award Gross StockIssuedDuringPeriodSharesRestrictedStockAwardGross	37233	shares
CY2008	us-gaap	Stock Issued During Period Shares Restricted Stock Award Gross StockIssuedDuringPeriodSharesRestrictedStockAwardGross	4002	shares
CY2010	us-gaap	Stock Issued During Period Shares Dividend Reinvestment Plan StockIssuedDuringPeriodSharesDividendReinvestmentPlan	217772	shares
CY2009	us-gaap	Stock Issued During Period Shares Dividend Reinvestment Plan StockIssuedDuringPeriodSharesDividendReinvestmentPlan	381167	shares
CY2008	us-gaap	Stock Issued During Period Shares Dividend Reinvestment Plan StockIssuedDuringPeriodSharesDividendReinvestmentPlan	1508	shares
CY2010	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	8108579	shares
CY2009	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	396046	shares
CY2008	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	18841287	shares
CY2010	us-gaap	Stock Issued During Period Shares Restricted Stock Award Forfeited StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited	6700	shares
CY2009	us-gaap	Stock Issued During Period Shares Restricted Stock Award Forfeited StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited	4000	shares
CY2008	us-gaap	Stock Issued During Period Shares Restricted Stock Award Forfeited StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited	48659	shares
CY2010Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	240447416	shares
CY2009Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	246507865	shares
CY2008Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	243324281	shares
CY2010Q4	us-gaap	Employee Stock Ownership Plan Esop Shares In Esop EmployeeStockOwnershipPlanESOPSharesInESOP	504440	shares
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CY2010Q4	sre	Authorized Share Repurchase Program Maximum Repurchase Amount AuthorizedShareRepurchaseProgramMaximumRepurchaseAmount	2000000000	USD
CY2010Q4	sre	Renewable Portfolio Standards Penalty Per Kilowatt Hour Of Renewable Energy Underdelivery RenewablePortfolioStandardsPenaltyPerKilowattHourOfRenewableEnergyUnderdelivery	0.05	USD
CY2010	sre	Renewable Portfolio Standards Noncompliance Maximum Annual Penalty RenewablePortfolioStandardsNoncomplianceMaximumAnnualPenalty	25000000	USD
CY2010Q4	sre	Nuclear Plant Estimated Capital Expenditure NuclearPlantEstimatedCapitalExpenditure	671000000	USD
CY2010	sre	Utility Incentive Awards Energy Efficiency And Demand Side Management UtilityIncentiveAwardsEnergyEfficiencyAndDemandSideManagement	15000000	USD
CY2009	sre	Utility Incentive Awards Energy Efficiency And Demand Side Management UtilityIncentiveAwardsEnergyEfficiencyAndDemandSideManagement	2000000	USD
CY2008	sre	Utility Incentive Awards Energy Efficiency And Demand Side Management UtilityIncentiveAwardsEnergyEfficiencyAndDemandSideManagement	28000000	USD
CY2010	sre	Utility Incentive Awards Unbundled Natural Gas Storage And Hub Services UtilityIncentiveAwardsUnbundledNaturalGasStorageAndHubServices	15000000	USD
CY2008	sre	Utility Incentive Awards Operational Incentives UtilityIncentiveAwardsOperationalIncentives	12000000	USD
CY2010	sre	Utility Incentive Awards UtilityIncentiveAwards	43000000	USD
CY2009	sre	Utility Incentive Awards UtilityIncentiveAwards	29000000	USD
CY2008	sre	Utility Incentive Awards UtilityIncentiveAwards	67000000	USD
CY2009	us-gaap	Segment Reporting Information Income Tax Expense Benefit SegmentReportingInformationIncomeTaxExpenseBenefit	422000000	USD
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CY2009	us-gaap	Segment Reporting Information Depreciation Depletion And Amortization Expense SegmentReportingInformationDepreciationDepletionAndAmortizationExpense	775000000	USD
CY2010	sre	Long Term Purchase Commitment Payments In Period LongTermPurchaseCommitmentPaymentsInPeriod	2097000000	USD
CY2009	sre	Long Term Purchase Commitment Payments In Period LongTermPurchaseCommitmentPaymentsInPeriod	1754000000	USD
CY2008	sre	Long Term Purchase Commitment Payments In Period LongTermPurchaseCommitmentPaymentsInPeriod	3469000000	USD
CY2010	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	85000000	USD
CY2009	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	101000000	USD
CY2008	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	100000000	USD
CY2008	us-gaap	Entity Wide Disclosure On Geographic Areas Revenue From External Customers Attributed To Individual Foreign Countries Amount EntityWideDisclosureOnGeographicAreasRevenueFromExternalCustomersAttributedToIndividualForeignCountriesAmount	10758000000	USD
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CY2010Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	73000000	USD
CY2010Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	67000000	USD
CY2010Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	65000000	USD
CY2010Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	64000000	USD
CY2010Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	63000000	USD
CY2010Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	623000000	USD
CY2010Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	955000000	USD
CY2010Q4	us-gaap	Environmental Cost Recognized Capitalized In Period EnvironmentalCostRecognizedCapitalizedInPeriod	21000000	USD
CY2009Q4	us-gaap	Environmental Cost Recognized Capitalized In Period EnvironmentalCostRecognizedCapitalizedInPeriod	43000000	USD
CY2008Q4	us-gaap	Environmental Cost Recognized Capitalized In Period EnvironmentalCostRecognizedCapitalizedInPeriod	30000000	USD
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CY2008	sre	Segment Reporting Information Percentage Of Earnings Losses SegmentReportingInformationPercentageOfEarningsLosses	1.00	USD
CY2010Q4	sre	Segment Reporting Information Percentage Of Assets SegmentReportingInformationPercentageOfAssets	1.00	USD
CY2009Q4	sre	Segment Reporting Information Percentage Of Assets SegmentReportingInformationPercentageOfAssets	1.00	USD
CY2008Q4	sre	Segment Reporting Information Percentage Of Assets SegmentReportingInformationPercentageOfAssets	1.00	USD
CY2010	sre	Segment Reporting Information Percentage Of Expenditures For Property Plant And Equipment SegmentReportingInformationPercentageOfExpendituresForPropertyPlantAndEquipment	1.00	USD
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CY2010Q4	us-gaap	Site Contingency Accrual Undiscounted Amount SiteContingencyAccrualUndiscountedAmount	27500000	USD
CY2010Q4	us-gaap	Loss Contingency Accrual At Carrying Value LossContingencyAccrualAtCarryingValue	996000000	USD
CY2010Q4	sre	Loss Contingency Accrual Settled Matters At Carrying Value LossContingencyAccrualSettledMattersAtCarryingValue	201000000	USD
CY2010Q4	sre	Operating Leases Annual Rent Escalation Range Minimum OperatingLeasesAnnualRentEscalationRangeMinimum	0.02	USD
CY2010Q4	sre	Operating Leases Annual Rent Escalation Range Maximum OperatingLeasesAnnualRentEscalationRangeMaximum	0.06	USD
CY2010Q4	sre	Concentration Risk Average Monthly Billing With Customer ConcentrationRiskAverageMonthlyBillingWithCustomer	29000000	USD
CY2010	us-gaap	Segment Reporting Information Revenue SegmentReportingInformationRevenue	9003000000	USD
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CY2010	us-gaap	Segment Reporting Information Interest Income SegmentReportingInformationInterestIncome	16000000	USD
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CY2010	us-gaap	Segment Reporting Information Income Tax Expense Benefit SegmentReportingInformationIncomeTaxExpenseBenefit	102000000	USD
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CY2008	us-gaap	Segment Reporting Information Depreciation Depletion And Amortization Expense SegmentReportingInformationDepreciationDepletionAndAmortizationExpense	687000000	USD
CY2008	us-gaap	Segment Reporting Information Income Tax Expense Benefit SegmentReportingInformationIncomeTaxExpenseBenefit	438000000	USD
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CY2009	us-gaap	Segment Reporting Information Profit Loss SegmentReportingInformationProfitLoss	1119000000	USD
CY2008	us-gaap	Segment Reporting Information Profit Loss SegmentReportingInformationProfitLoss	1113000000	USD
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CY2009Q4	us-gaap	Segment Reporting Information Assets SegmentReportingInformationAssets	28512000000	USD
CY2008Q4	us-gaap	Segment Reporting Information Assets SegmentReportingInformationAssets	26400000000	USD
CY2010	us-gaap	Segment Reporting Information Expenditures For Additions To Long Lived Assets SegmentReportingInformationExpendituresForAdditionsToLongLivedAssets	2062000000	USD
CY2009	us-gaap	Segment Reporting Information Expenditures For Additions To Long Lived Assets SegmentReportingInformationExpendituresForAdditionsToLongLivedAssets	1912000000	USD
CY2008	us-gaap	Segment Reporting Information Expenditures For Additions To Long Lived Assets SegmentReportingInformationExpendituresForAdditionsToLongLivedAssets	2061000000	USD
CY2010Q4	us-gaap	Entity Wide Disclosure On Geographic Areas Long Lived Assets In Individual Foreign Countries Amount EntityWideDisclosureOnGeographicAreasLongLivedAssetsInIndividualForeignCountriesAmount	22827000000	USD
CY2009Q4	us-gaap	Entity Wide Disclosure On Geographic Areas Long Lived Assets In Individual Foreign Countries Amount EntityWideDisclosureOnGeographicAreasLongLivedAssetsInIndividualForeignCountriesAmount	22604000000	USD
CY2008Q4	us-gaap	Entity Wide Disclosure On Geographic Areas Long Lived Assets In Individual Foreign Countries Amount EntityWideDisclosureOnGeographicAreasLongLivedAssetsInIndividualForeignCountriesAmount	20113000000	USD
CY2010	us-gaap	Entity Wide Disclosure On Geographic Areas Revenue From External Customers Attributed To Individual Foreign Countries Amount EntityWideDisclosureOnGeographicAreasRevenueFromExternalCustomersAttributedToIndividualForeignCountriesAmount	9003000000	USD
CY2009	us-gaap	Entity Wide Disclosure On Geographic Areas Revenue From External Customers Attributed To Individual Foreign Countries Amount EntityWideDisclosureOnGeographicAreasRevenueFromExternalCustomersAttributedToIndividualForeignCountriesAmount	8106000000	USD
CY2010Q4	sre	Entity Wide Disclosure On Geographic Areas Long Lived Assets In Individual Foreign Countries Percentage EntityWideDisclosureOnGeographicAreasLongLivedAssetsInIndividualForeignCountriesPercentage	1.00	USD
CY2009Q4	sre	Entity Wide Disclosure On Geographic Areas Long Lived Assets In Individual Foreign Countries Percentage EntityWideDisclosureOnGeographicAreasLongLivedAssetsInIndividualForeignCountriesPercentage	1.00	USD
CY2008Q4	sre	Entity Wide Disclosure On Geographic Areas Long Lived Assets In Individual Foreign Countries Percentage EntityWideDisclosureOnGeographicAreasLongLivedAssetsInIndividualForeignCountriesPercentage	1.00	USD
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CY2009	sre	Entity Wide Disclosure On Geographic Areas Revenue From External Customers Attributed To Individual Foreign Countries Percentage EntityWideDisclosureOnGeographicAreasRevenueFromExternalCustomersAttributedToIndividualForeignCountriesPercentage	1.00	USD
CY2008	sre	Entity Wide Disclosure On Geographic Areas Revenue From External Customers Attributed To Individual Foreign Countries Percentage EntityWideDisclosureOnGeographicAreasRevenueFromExternalCustomersAttributedToIndividualForeignCountriesPercentage	1.00	USD
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CY2010Q1	sre	Quarterly Financial Data Revenues QuarterlyFinancialDataRevenues	2534000000	USD
CY2010Q2	sre	Quarterly Financial Data Revenues QuarterlyFinancialDataRevenues	2008000000	USD
CY2010Q3	sre	Quarterly Financial Data Revenues QuarterlyFinancialDataRevenues	2116000000	USD
CY2010Q4	sre	Quarterly Financial Data Revenues QuarterlyFinancialDataRevenues	2345000000	USD
CY2009Q1	sre	Quarterly Financial Data Earnings QuarterlyFinancialDataEarnings	316000000	USD
CY2009Q2	sre	Quarterly Financial Data Earnings QuarterlyFinancialDataEarnings	198000000	USD
CY2010Q3	sre	Quarterly Financial Data Expenses And Other Income QuarterlyFinancialDataExpensesAndOtherIncome	2017000000	USD
CY2010Q4	sre	Quarterly Financial Data Expenses And Other Income QuarterlyFinancialDataExpensesAndOtherIncome	2034000000	USD
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CY2010Q3	sre	Quarterly Financial Data Net Income QuarterlyFinancialDataNetIncome	127000000	USD
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CY2010Q1	sre	Quarterly Financial Data Earnings Per Share Basic QuarterlyFinancialDataEarningsPerShareBasic	0.43	USD
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CY2010Q1	sre	Quarterly Financial Data Weighted Average Number Of Shares Outstanding Basic QuarterlyFinancialDataWeightedAverageNumberOfSharesOutstandingBasic	246100000	shares
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CY2010Q4	sre	Quarterly Financial Data Weighted Average Number Of Shares Outstanding Basic QuarterlyFinancialDataWeightedAverageNumberOfSharesOutstandingBasic	239500000	shares
CY2010Q1	sre	Quarterly Financial Data Net Income Per Share Diluted QuarterlyFinancialDataNetIncomePerShareDiluted	0.40	USD
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CY2009Q4	sre	Quarterly Financial Data Earnings QuarterlyFinancialDataEarnings	288000000	USD
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CY2009Q2	sre	Quarterly Financial Data Net Income Per Share Basic QuarterlyFinancialDataNetIncomePerShareBasic	0.78	USD
CY2010Q1	sre	Quarterly Financial Data Expenses And Other Income QuarterlyFinancialDataExpensesAndOtherIncome	2395000000	USD
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CY2010Q1	sre	Quarterly Financial Data Net Income Per Share Basic QuarterlyFinancialDataNetIncomePerShareBasic	0.41	USD
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CY2010Q4	sre	Quarterly Financial Data Net Income Per Share Diluted QuarterlyFinancialDataNetIncomePerShareDiluted	1.24	USD
CY2010Q1	sre	Quarterly Financial Data Earnings Per Share Diluted QuarterlyFinancialDataEarningsPerShareDiluted	0.42	USD
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CY2010Q3	sre	Quarterly Financial Data Earnings Per Share Diluted QuarterlyFinancialDataEarningsPerShareDiluted	0.53	USD
CY2010Q4	sre	Quarterly Financial Data Earnings Per Share Diluted QuarterlyFinancialDataEarningsPerShareDiluted	1.15	USD
CY2010Q1	sre	Quarterly Financial Data Weighted Average Number Of Shares Outstanding Diluted QuarterlyFinancialDataWeightedAverageNumberOfSharesOutstandingDiluted	250400000	shares
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CY2010Q3	sre	Quarterly Financial Data Weighted Average Number Of Shares Outstanding Diluted QuarterlyFinancialDataWeightedAverageNumberOfSharesOutstandingDiluted	249800000	shares
CY2010Q4	sre	Quarterly Financial Data Weighted Average Number Of Shares Outstanding Diluted QuarterlyFinancialDataWeightedAverageNumberOfSharesOutstandingDiluted	242500000	shares
CY2009Q1	sre	Quarterly Financial Data Revenues QuarterlyFinancialDataRevenues	2108000000	USD
CY2009Q2	sre	Quarterly Financial Data Revenues QuarterlyFinancialDataRevenues	1689000000	USD
CY2009Q3	sre	Quarterly Financial Data Revenues QuarterlyFinancialDataRevenues	1853000000	USD
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CY2009Q3	sre	Quarterly Financial Data Expenses And Other Income QuarterlyFinancialDataExpensesAndOtherIncome	1443000000	USD
CY2009Q4	sre	Quarterly Financial Data Expenses And Other Income QuarterlyFinancialDataExpensesAndOtherIncome	2064000000	USD
CY2009Q1	sre	Quarterly Financial Data Net Income QuarterlyFinancialDataNetIncome	325000000	USD
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CY2009Q3	sre	Quarterly Financial Data Net Income Per Share Basic QuarterlyFinancialDataNetIncomePerShareBasic	1.24	USD
CY2009Q4	sre	Quarterly Financial Data Net Income Per Share Basic QuarterlyFinancialDataNetIncomePerShareBasic	1.25	USD
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CY2009Q4	sre	Quarterly Financial Data Earnings Per Share Basic QuarterlyFinancialDataEarningsPerShareBasic	1.18	USD
CY2009Q1	sre	Quarterly Financial Data Weighted Average Number Of Shares Outstanding Basic QuarterlyFinancialDataWeightedAverageNumberOfSharesOutstandingBasic	241800000	shares
CY2009Q2	sre	Quarterly Financial Data Weighted Average Number Of Shares Outstanding Basic QuarterlyFinancialDataWeightedAverageNumberOfSharesOutstandingBasic	242700000	shares
CY2009Q3	sre	Quarterly Financial Data Weighted Average Number Of Shares Outstanding Basic QuarterlyFinancialDataWeightedAverageNumberOfSharesOutstandingBasic	243900000	shares
CY2009Q4	sre	Quarterly Financial Data Weighted Average Number Of Shares Outstanding Basic QuarterlyFinancialDataWeightedAverageNumberOfSharesOutstandingBasic	244900000	shares
CY2009Q4	sre	Quarterly Financial Data Weighted Average Number Of Shares Outstanding Diluted QuarterlyFinancialDataWeightedAverageNumberOfSharesOutstandingDiluted	248700000	shares
CY2010Q1	sre	Quarterly Financial Data Litigation Expense QuarterlyFinancialDataLitigationExpense	159000000	USD
CY2010Q1	sre	Quarterly Financial Data Litigation Expense Net Of Income Tax Effect QuarterlyFinancialDataLitigationExpenseNetOfIncomeTaxEffect	96000000	USD
CY2010Q1	sre	Quarterly Financial Data Write Down Of Deferred Tax Assets Related To Other Postretirement Benefits QuarterlyFinancialDataWriteDownOfDeferredTaxAssetsRelatedToOtherPostretirementBenefits	16000000	USD
CY2010Q3	sre	Quarterly Financial Data Investment In Joint Venture Other Than Temporary Impairment QuarterlyFinancialDataInvestmentInJointVentureOtherThanTemporaryImpairment	305000000	USD
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CY2009Q1	sre	Quarterly Financial Data Net Income Per Share Diluted QuarterlyFinancialDataNetIncomePerShareDiluted	1.33	USD
CY2009Q2	sre	Quarterly Financial Data Net Income Per Share Diluted QuarterlyFinancialDataNetIncomePerShareDiluted	0.76	USD
CY2009Q3	sre	Quarterly Financial Data Net Income Per Share Diluted QuarterlyFinancialDataNetIncomePerShareDiluted	1.21	USD
CY2009Q4	sre	Quarterly Financial Data Net Income Per Share Diluted QuarterlyFinancialDataNetIncomePerShareDiluted	1.23	USD
CY2009Q1	sre	Quarterly Financial Data Earnings Per Share Diluted QuarterlyFinancialDataEarningsPerShareDiluted	1.29	USD
CY2009Q2	sre	Quarterly Financial Data Earnings Per Share Diluted QuarterlyFinancialDataEarningsPerShareDiluted	0.80	USD
CY2009Q3	sre	Quarterly Financial Data Earnings Per Share Diluted QuarterlyFinancialDataEarningsPerShareDiluted	1.27	USD
CY2009Q4	sre	Quarterly Financial Data Earnings Per Share Diluted QuarterlyFinancialDataEarningsPerShareDiluted	1.16	USD
CY2009Q1	sre	Quarterly Financial Data Weighted Average Number Of Shares Outstanding Diluted QuarterlyFinancialDataWeightedAverageNumberOfSharesOutstandingDiluted	245000000	shares
CY2009Q2	sre	Quarterly Financial Data Weighted Average Number Of Shares Outstanding Diluted QuarterlyFinancialDataWeightedAverageNumberOfSharesOutstandingDiluted	247100000	shares
CY2009Q3	sre	Quarterly Financial Data Weighted Average Number Of Shares Outstanding Diluted QuarterlyFinancialDataWeightedAverageNumberOfSharesOutstandingDiluted	248500000	shares
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R30.xml	Edgar Link	unprocessable
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scg_allman317qtr.htm	Edgar Link	pending
scg_allman327qtr.htm	Edgar Link	pending
scg_schlax318qtr.htm	Edgar Link	pending
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sre-20101231.xml	Edgar Link	completed
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sre-20101231_lab.xml	Edgar Link	unprocessable
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sre2010_10k2.htm	Edgar Link	pending

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$SRE
SEMPRA Stock $sre

2010 Q4 Form 10-K Financial Statement

#000008652111000017 Filed on February 24, 2011

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SRE SEMPRA Stock $sre

2010 Q4 Form 10-K Financial Statement

#000008652111000017 Filed on February 24, 2011

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SRE
SEMPRA Stock $sre