COMMITMENTS AND CONTINGENCIES - CONTRACTUAL COMMITMENTS 2 (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014
San Diego Gas and Electric Company and Subsidiary [Member] | Purchased Power Contracts [Member]
Payments Under Contractual Commitments [Line Items]
Increase (Decrease) In Contractual Commitment Amount	$ 895
Increase (Decrease) In Contractual Commitments, Payments Due, Current	6
Increase (Decrease) In Contractual Commitments, Payments Due, In Two Years	(54)
Increase (Decrease) In Contractual Commitments, Payments Due, In Three Years	(10)
Increase (Decrease) In Contractual Commitments, Payments Due, In Four Years	15
Increase (Decrease) In Contractual Commitments, Payments Due, In Five Years	46
Increase (Decrease) In Contractual Commitments, Payments Due, In Thereafter	892
San Diego Gas and Electric Company and Subsidiary [Member] | Construction and Development Contracts [Member]
Payments Under Contractual Commitments [Line Items]
Increase (Decrease) In Contractual Commitment Amount	98
Increase (Decrease) In Contractual Commitments, Payments Due, Current	77
Increase (Decrease) In Contractual Commitments, Payments Due, In Two Years	18
Increase (Decrease) In Contractual Commitments, Payments Due, In Three Years	2
Increase (Decrease) In Contractual Commitments, Payments Due, In Four Years	1
Southern California Gas Company [Member] | Natural Gas Contracts [Member]
Payments Under Contractual Commitments [Line Items]
Increase (Decrease) In Contractual Commitment Amount	(95)
Southern California Gas Company [Member] | Construction and Development Contracts [Member]
Payments Under Contractual Commitments [Line Items]
Increase (Decrease) In Contractual Commitment Amount	156
Increase (Decrease) In Contractual Commitments, Payments Due, Current	78
Increase (Decrease) In Contractual Commitments, Payments Due, In Two Years	65
Increase (Decrease) In Contractual Commitments, Payments Due, In Three Years	13
Sempra Mexico [Member] | Construction and Development Contracts [Member]
Payments Under Contractual Commitments [Line Items]
Increase (Decrease) In Contractual Commitment Amount	16
Sempra Natural Gas [Member] | Natural Gas Contracts [Member]
Payments Under Contractual Commitments [Line Items]
Increase (Decrease) In Contractual Commitment Amount	(61)
Increase (Decrease) In Contractual Commitments, Payments Due, Current	(60)
Increase (Decrease) In Contractual Commitments, Payments Due, In Three Years	(1)
Sempra Natural Gas [Member] | Liquefied Natural Gas Contracts [Member]
Payments Under Contractual Commitments [Line Items]
Increase (Decrease) In Contractual Commitments, Payments Due, Current	(298)
Increase (Decrease) In Contractual Commitments, Payments Due, In Two Years	22
Increase (Decrease) In Contractual Commitments, Payments Due, In Three Years	33
Increase (Decrease) In Contractual Commitments, Payments Due, In Four Years	57
Increase (Decrease) In Contractual Commitments, Payments Due, In Five Years	78
Increase (Decrease) In Contractual Commitments, Payments Due, In Thereafter	1,300
Sempra Renewables [Member] | Construction and Development Contracts [Member]
Payments Under Contractual Commitments [Line Items]
Increase (Decrease) In Contractual Commitment Amount	(496)
Increase (Decrease) In Contractual Commitments, Payments Due, Current	(456)
Increase (Decrease) In Contractual Commitments, Payments Due, In Two Years	$ (40)