DEBT AND CREDIT FACILITIES 2 (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015
Other Long Term Debt, Variable Rate Due 2017 [Member] | San Diego Gas and Electric Company [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 140
Debt Instrument, Interest Rate At Period End	0.47%
Debt Instrument, Variable Base Rate	0.20%
Other Long Term Debt, Fixed Rate Due 2020 [Member] | Sempra Energy [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	500
Debt Instrument, Interest Rate, Stated Percentage	2.40%
Other Long Term Debt, Amortizing Fixed Rate Due 2022 [Member] | San Diego Gas and Electric Company [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 250
Debt Instrument, Interest Rate, Stated Percentage	1.914%