DERIVATIVE FINANCIAL INSTRUMENTS 3 (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014		Dec. 31, 2013
Fixed Price Contracts And Other Derivatives, Current Assets [Member]
Derivative Instruments in Hedges, at Fair Value, Net [Abstract]
Interest rate and foreign exchange instruments	$ 21	[1],[2]	$ 14	[1],[2]
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net, Total [Abstract]
Interest rate and foreign exchange instruments	8	[1]	8	[1]
Commodity contracts not subject to rate recovery	36	[1]	47	[1]
Associated offsetting commodity contracts not subject to rate recovery	(32)	[1]	(43)	[1]
Associated cash collateral commodity contracts not subject to rate recovery	0	[1]	0	[1]
Commodity contracts subject to rate recovery	38	[1]	35	[1]
Associated offsetting commodity contracts subject to rate recovery	(3)	[1]	(3)	[1]
Net amount presented on balance sheet	68	[1]	58	[1]
Additional margin posted for commodity contracts not subject to rate recovery	15	[1]	17	[1]
Additional margin posted for commodity contracts subject to rate recovery	31	[1]	31	[1]
Total	114	[1]	106	[1]
Fixed Price Contracts And Other Derivatives, Current Assets [Member] | San Diego Gas and Electric Company and Subsidiary [Member]
Derivative Instruments in Hedges, at Fair Value, Net [Abstract]
Interest rate and foreign exchange instruments	0	[2]	0	[2]
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net, Total [Abstract]
Commodity contracts subject to rate recovery	36		34
Associated offsetting commodity contracts subject to rate recovery	(2)		(3)
Net amount presented on balance sheet	34		31
Additional margin posted for commodity contracts not subject to rate recovery	1		1
Additional margin posted for commodity contracts subject to rate recovery	29		29
Total	64		61
Fixed Price Contracts And Other Derivatives, Current Assets [Member] | Southern California Gas Company [Member]
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net, Total [Abstract]
Commodity contracts subject to rate recovery	2	[1]	1	[1]
Associated offsetting commodity contracts subject to rate recovery	(1)	[1]
Net amount presented on balance sheet	1	[1]	1	[1]
Additional margin posted for commodity contracts not subject to rate recovery	2	[1]	2	[1]
Additional margin posted for commodity contracts subject to rate recovery	2	[1]	2	[1]
Total	5	[1]	5	[1]
Fixed Price Contracts And Other Derivatives, Noncurrent Assets [Member]
Derivative Instruments in Hedges, at Fair Value, Net [Abstract]
Interest rate and foreign exchange instruments	11	[2]	12	[2]
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net, Total [Abstract]
Interest rate and foreign exchange instruments	24		22
Commodity contracts not subject to rate recovery	5		7
Associated offsetting commodity contracts not subject to rate recovery	(4)		(5)
Associated cash collateral commodity contracts not subject to rate recovery	0		0
Commodity contracts subject to rate recovery	72		72
Associated offsetting commodity contracts subject to rate recovery	(1)		(2)
Net amount presented on balance sheet	107		106
Additional margin posted for commodity contracts not subject to rate recovery	0		0
Additional margin posted for commodity contracts subject to rate recovery	0		0
Total	107		106
Fixed Price Contracts And Other Derivatives, Noncurrent Assets [Member] | San Diego Gas and Electric Company and Subsidiary [Member]
Derivative Instruments in Hedges, at Fair Value, Net [Abstract]
Interest rate and foreign exchange instruments	0	[2]	0	[2]
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net, Total [Abstract]
Commodity contracts subject to rate recovery	72		72
Associated offsetting commodity contracts subject to rate recovery	(1)		(2)
Net amount presented on balance sheet	71		70
Additional margin posted for commodity contracts not subject to rate recovery	0		0
Additional margin posted for commodity contracts subject to rate recovery	0		0
Total	71		70
Fixed Price Contracts And Other Derivatives, Noncurrent Assets [Member] | Southern California Gas Company [Member]
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net, Total [Abstract]
Commodity contracts subject to rate recovery	0		0
Associated offsetting commodity contracts subject to rate recovery	0
Net amount presented on balance sheet	0		0
Additional margin posted for commodity contracts not subject to rate recovery	0		0
Additional margin posted for commodity contracts subject to rate recovery	0		0
Total	0		0
Fixed Price Contracts And Other Derivatives, Current Liabilities [Member]
Derivative Instruments in Hedges, at Fair Value, Net [Abstract]
Interest rate and foreign exchange instruments	(18)	[2],[3]	(18)	[2],[3]
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net, Total [Abstract]
Interest rate and foreign exchange instruments	(7)	[3]	(7)	[3]
Commodity contracts not subject to rate recovery	(40)	[3]	(51)	[3]
Associated offsetting commodity contracts not subject to rate recovery	32	[3]	43	[3]
Associated cash collateral commodity contracts not subject to rate recovery	1	[3]	1	[3]
Commodity contracts subject to rate recovery	(9)	[3]	(10)	[3]
Associated offsetting commodity contracts subject to rate recovery	3	[3]	3	[3]
Net amount presented on balance sheet	(38)	[3]	(39)	[3]
Additional margin posted for commodity contracts not subject to rate recovery	0	[3]	0	[3]
Additional margin posted for commodity contracts subject to rate recovery	0	[3]	0	[3]
Total	(38)	[3]	(39)	[3]
Fixed Price Contracts And Other Derivatives, Current Liabilities [Member] | San Diego Gas and Electric Company and Subsidiary [Member]
Derivative Instruments in Hedges, at Fair Value, Net [Abstract]
Interest rate and foreign exchange instruments	(17)	[2]	(16)	[2]
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net, Total [Abstract]
Commodity contracts subject to rate recovery	(7)		(9)
Associated offsetting commodity contracts subject to rate recovery	2		3
Net amount presented on balance sheet	(22)		(22)
Additional margin posted for commodity contracts not subject to rate recovery	0		0
Additional margin posted for commodity contracts subject to rate recovery	0		0
Total	(22)		(22)
Fixed Price Contracts And Other Derivatives, Current Liabilities [Member] | Southern California Gas Company [Member]
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net, Total [Abstract]
Commodity contracts subject to rate recovery	(2)	[3]	(1)	[3]
Associated offsetting commodity contracts subject to rate recovery	1	[3]
Net amount presented on balance sheet	(1)	[3]	(1)	[3]
Additional margin posted for commodity contracts not subject to rate recovery	0	[3]	0	[3]
Additional margin posted for commodity contracts subject to rate recovery	0	[3]	0	[3]
Total	(1)	[3]	(1)	[3]
Fixed Price Contracts And Other Derivatives, Noncurrent Liabilities [Member]
Derivative Instruments in Hedges, at Fair Value, Net [Abstract]
Interest rate and foreign exchange instruments	(83)	[2]	(75)	[2]
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net, Total [Abstract]
Interest rate and foreign exchange instruments	(19)		(17)
Commodity contracts not subject to rate recovery	(4)		(5)
Associated offsetting commodity contracts not subject to rate recovery	4		5
Associated cash collateral commodity contracts not subject to rate recovery	0		0
Commodity contracts subject to rate recovery	(10)		(8)
Associated offsetting commodity contracts subject to rate recovery	1		2
Net amount presented on balance sheet	(111)		(98)
Additional margin posted for commodity contracts not subject to rate recovery	0		0
Additional margin posted for commodity contracts subject to rate recovery	0		0
Total	(111)		(98)
Fixed Price Contracts And Other Derivatives, Noncurrent Liabilities [Member] | San Diego Gas and Electric Company and Subsidiary [Member]
Derivative Instruments in Hedges, at Fair Value, Net [Abstract]
Interest rate and foreign exchange instruments	(36)	[2]	(39)	[2]
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net, Total [Abstract]
Commodity contracts subject to rate recovery	(10)		(8)
Associated offsetting commodity contracts subject to rate recovery	1		2
Net amount presented on balance sheet	(45)		(45)
Additional margin posted for commodity contracts not subject to rate recovery	0		0
Additional margin posted for commodity contracts subject to rate recovery	0		0
Total	(45)		(45)
Fixed Price Contracts And Other Derivatives, Noncurrent Liabilities [Member] | Southern California Gas Company [Member]
Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net, Total [Abstract]
Commodity contracts subject to rate recovery	0		0
Associated offsetting commodity contracts subject to rate recovery	0
Net amount presented on balance sheet	0		0
Additional margin posted for commodity contracts not subject to rate recovery	0		0
Additional margin posted for commodity contracts subject to rate recovery	0		0
Total	$ 0		$ 0

[1] Included in Current Assets: Other for SoCalGas.

[2] Includes Otay Mesa VIE. All of SDG&E’s amounts relate to Otay Mesa VIE.

[3] Included in Current Liabilities: Other for SoCalGas.