DEBT AND CREDIT FACILITIES 2 (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2014
Other Long Term Debt, Fixed Rate Due 2044 [Member] | Southern California Gas Company [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 250
Debt Instrument, Interest Rate, Stated Percentage	4.45%
Other Long Term Debt, Due March 2027 [Member] | Copper Mountain Solar 3 [Member]
Debt Instrument [Line Items]
Debt Instrument, Maximum Borrowing Amount	356
Debt Instrument, Outstanding Borrowings	97
Debt Instrument, Interest Rate, After Floating To Fixed Swap	5.35%
Debt Instrument, Current Stated Market Interest Rate	0.16%
Other Long Term Debt, Fixed Rate Due 2024 [Member] | Sempra Energy [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	500
Debt Instrument, Interest Rate, Stated Percentage	3.55%
Other Long Term Debt, Fixed Rate Due 2024 [Member] | Southern California Gas Company [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	500
Debt Instrument, Interest Rate, Stated Percentage	3.15%
Other Long Term Debt, Fixed Rate Due June 2033 [Member] | Energia Sierra Juarez wind project [Member]
Debt Instrument [Line Items]
Debt Instrument, Maximum Borrowing Amount	240
Debt Instrument, Outstanding Borrowings	$ 82
Debt Instrument, Interest Rate, After Floating To Fixed Swap	6.10%
Debt Instrument, Current Stated Market Interest Rate	0.16%
Other Long Term Debt, Fixed Rate Due 2014 [Member] | Southern California Gas Company [Member]
Debt Instrument [Line Items]
Retired Debt Instrument, Interest Rate, Stated Percentage	5.50%