INCOME TAXES (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Line Items]
Effective Income Tax Rate Reconciliation, Federal Statutory Income Tax Rate	35.00%	35.00%	35.00%
Effective Income Tax Rate Reconciliation, Utility Depreciation	4.00%	6.00%	3.00%
Effective Income Tax Rate Reconciliation Income Tax Restructuring Related To IEnova Stock Offering	4.00%	0.00%	0.00%
Effective Income Tax Rate Reconciliation, State and Local Income Taxes	1.00%	(1.00%)	2.00%
Effective Income Tax Rate Reconciliation, Utility Repair Allowance	(5.00%)	(8.00%)	(1.00%)
Effective Income Tax Rate Reconciliation, Tax Credits	(3.00%)	(7.00%)	(1.00%)
Effective Income Tax Rate Reconciliation, Non-U.S. Earnings Taxed At Lower Statutory Income Tax Rates	(3.00%)	(4.00%)	(8.00%)
Effective Income Tax Rate Reconciliation, Self Developed Software Expenditures	(3.00%)	(5.00%)	(3.00%)
Effective Income Tax Rate Reconciliation, Allowance For Equity Funds Used During Construction	(1.00%)	(4.00%)	(2.00%)
Effective Income Tax Rate Reconciliation, Adjustments to Prior Year Income Tax Items	(3.00%)	(1.00%)	0.00%
Effective Income Tax Rate Reconciliation, Foreign Exchange And Inflation Effects	0.00%	1.00%	(1.00%)
Effective Income Tax Rate Reconciliation, Variable Interest Entities	(1.00%)	(1.00%)	0.00%
Effective Income Tax Rate Reconciliation, Life Insurance Contract	0.00%	(7.00%)	0.00%
Effective Income Tax Rate Reconciliation, Other Adjustments	1.00%	2.00%	(1.00%)
Effective Income Tax Rate, Continuing Operations	26.00%	6.00%	23.00%
Income (Loss) from Continuing Operations before Income Taxes, Domestic	$ 941	$ 442	$ 1,011
Income (Loss) from Continuing Operations before Income Taxes, Foreign	489	501	712
Income before income taxes and equity earnings of certain unconsolidated subsidiaries	1,430	943	1,723
Income tax expense related to corporate reorganization	63
Income tax benefit related to repairs expenditures recorded for full-year 2011		22
San Diego Gas and Electric Company and Subsidiary [Member]
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Line Items]
Effective Income Tax Rate Reconciliation, Federal Statutory Income Tax Rate	35.00%	35.00%	35.00%
Effective Income Tax Rate Reconciliation, Utility Depreciation	5.00%	4.00%	4.00%
Effective Income Tax Rate Reconciliation, State and Local Income Taxes	3.00%	4.00%	5.00%
Effective Income Tax Rate Reconciliation, Utility Repair Allowance	(4.00%)	(4.00%)	(1.00%)
Effective Income Tax Rate Reconciliation, Self Developed Software Expenditures	(3.00%)	(3.00%)	(3.00%)
Effective Income Tax Rate Reconciliation, Allowance For Equity Funds Used During Construction	(2.00%)	(4.00%)	(4.00%)
Effective Income Tax Rate Reconciliation, Adjustments to Prior Year Income Tax Items	(1.00%)	(3.00%)	0.00%
Effective Income Tax Rate Reconciliation, Variable Interest Entities	(1.00%)	(1.00%)	(1.00%)
Effective Income Tax Rate Reconciliation, Other Adjustments	(1.00%)	(1.00%)	(1.00%)
Effective Income Tax Rate, Continuing Operations	31.00%	27.00%	34.00%
Income before income taxes and equity earnings of certain unconsolidated subsidiaries	626	705	692
Southern California Gas Company [Member]
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Line Items]
Effective Income Tax Rate Reconciliation, Federal Statutory Income Tax Rate	35.00%	35.00%	35.00%
Effective Income Tax Rate Reconciliation, Utility Depreciation	6.00%	7.00%	6.00%
Effective Income Tax Rate Reconciliation, State and Local Income Taxes	4.00%	3.00%	4.00%
Effective Income Tax Rate Reconciliation, Utility Repair Allowance	(9.00%)	(12.00%)	0.00%
Effective Income Tax Rate Reconciliation, Self Developed Software Expenditures	(6.00%)	(9.00%)	(7.00%)
Effective Income Tax Rate Reconciliation, Allowance For Equity Funds Used During Construction	(1.00%)	(2.00%)	(2.00%)
Effective Income Tax Rate Reconciliation, Adjustments to Prior Year Income Tax Items	(5.00%)	0.00%	0.00%
Effective Income Tax Rate Reconciliation, Other Adjustments	0.00%	(1.00%)	(3.00%)
Effective Income Tax Rate, Continuing Operations	24.00%	21.00%	33.00%
Income before income taxes and equity earnings of certain unconsolidated subsidiaries	$ 481	$ 369	$ 431

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Effective income tax rate reconciliation, allowance for equity funds used during construction.

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Effective income tax rate reconciliation, foreign exchange and inflation effects.

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Effective income tax rate reconciliation, income tax restructuring related to subsidiary stock offering.

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Effective income tax rate reconciliation, life insurance contract.

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Effective income tax rate reconciliation, self developed software expenditures.

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Effective income tax rate reconciliation, utility repair allowance.

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Effective income tax rate reconciliation, variable interest entities.

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Income tax benefit related to repairs expenditures recorded for full-year 2011.

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Income tax expense related to corporate reorganization.

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A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems.

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The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate that can be explained by the difference between statutory income tax rates in foreign jurisdictions and the domestic federal statutory income tax rate recorded during the period.

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The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate that can be explained by the different depreciation methods allowed under generally accepted accounting principles and enacted tax laws.

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The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate attributable to all other items not otherwise listed in the existing taxonomy.

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The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate attributable to revisions in previously reported amounts of income tax provision.

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The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate that can be explained by the state and local income tax expense or benefit, net of the federal tax benefit (expense) thereon, recorded during the period.

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The sum of the differences between the effective income tax rate and domestic federal statutory income tax rate that can be explained by all tax credits generated or utilized under enacted tax laws during the period.

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The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations.

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The portion of earnings or loss from continuing operations before income taxes that is attributable to foreign operations, which is defined as Income or Loss generated from operations located outside the entity's country of domicile.

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Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest.

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