COMMITMENTS AND CONTINGENCIES - CONTRACTUAL COMMITMENTS 4 (Details) - Pio Pico [Member] - Sempra Energy Consolidated $ in Millions		Jun. 30, 2015 USD ($)
Capital Leases [Line Items]
CapitalLeasesFutureMinimumPaymentsDueCurrent		$ 0
CapitalLeasesFutureMinimumPaymentsDueInTwoYears		0
CapitalLeasesFutureMinimumPaymentsDueInThreeYears		38
CapitalLeasesFutureMinimumPaymentsDueInFourYears		65
CapitalLeasesFutureMinimumPaymentsDueInFiveYears		65
CapitalLeasesFutureMinimumPaymentsDueThereafter		1,460
CapitalLeasesFutureMinimumPaymentsDue	[1]	1,628
CapitalLeasesFutureMinimumPaymentsExecutoryCosts		(392)
CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments	[2]	(736)
CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments		$ 500

[1] This amount will be recorded over the life of the lease as Cost of Electric Fuel and Purchased Power on Sempra Energy’s and SDG&E’s Condensed Consolidated Statements of Operations. This expense will receive ratemaking treatment consistent with purchased-power costs, which are recovered in rates.

[2] Amount necessary to reduce net minimum lease payments to estimated present value at the inception of the lease.