COMMITMENTS AND CONTINGENCIES - LEGAL PROCEEDINGS (Details)				3 Months Ended				3 Months Ended
	Mar. 31, 2014 USD ($)	Mar. 31, 2014 San Diego Gas and Electric Company and Subsidiary [Member] USD ($)	Mar. 31, 2014 Southern California Gas Company [Member] USD ($)	Mar. 31, 2014 Loss from Catastrophes [Member] S D G E Segment [Member] USD ($)	Mar. 31, 2013 Loss from Catastrophes [Member] S D G E Segment [Member] USD ($)	Mar. 31, 2014 Loss from Catastrophes [Member] San Diego Gas and Electric Company and Subsidiary [Member] USD ($)	Mar. 31, 2014 Liberty Gas Storage Litigation [Member] USD ($)	Mar. 31, 2014 HMRC VAT Claim [Member] GBP (£)	Mar. 31, 2014 Sunrise Powerlink Construction [Member] San Diego Gas and Electric Company and Subsidiary [Member] USD ($)	Mar. 31, 2014 Sunrise San Diego County Mechanics Lien [Member] San Diego Gas and Electric Company and Subsidiary [Member] USD ($)	Mar. 31, 2014 Sunrise Imperial County Mechanics Lien [Member] San Diego Gas and Electric Company and Subsidiary [Member] USD ($)	Mar. 31, 2014 Rim Rock [Member] San Diego Gas and Electric Company and Subsidiary [Member] USD ($)
Loss Contingencies [Line Items]
Loss Contingency Accrual, at Carrying Value	$ 183,000,000	$ 173,000,000	$ 0			$ 130,000,000
Payments for Legal Settlements in April 2010, CPUC Proceedings						14,750,000
Claims Payments By Insurers To All Claimants						1,600,000,000
Percentage of Total Claims to be Paid by Company						57.50%
Total Settled Claims						1,250,000,000
Total Remaining Settlement Demands						250,000,000
Liability Insurance Coverage, Maximum						1,100,000,000
Litigation Settlement Amount, Gross, Recovered From Third Parties						824,000,000
Loss Contingency Monetary Damages Sought							56,700,000
Counterclaim For Damages On Contract Termination							215,000,000
Payments For Legal Settlements In Excess Of Recovered Amounts						374,000,000
Loss Contingency Accrual Carrying Value, Current						75,000,000
Loss Contingency Accrual Carrying Value, Noncurrent						55,000,000
VAT Tax Claim Amount								86,000,000
Regulatory Assets Arising From Wildfire Litigation Costs						377,000,000
Potential After-Tax Earnings Impact						210,000,000
Portion of Regulatory Assets Arising From Wildfire Litigation Related To CPUC Operations						358,000,000
Fixed Fee Contract Amount									456,000,000
Unbilled Change Orders									180,300,000	99,200,000	81,100,000
Estimated Tax Equity Investment												285,000,000
Loss From Loss Contingencies [Line Items]
Loss Contingency, Loss (Gain) in Period				$ 2,800,000	$ 300,000