COMMITMENTS AND CONTINGENCIES - CONTRACTUAL COMMITMENTS 3 (Details) (Sempra Renewables [Member], USD $) In Millions, unless otherwise specified	Sep. 30, 2014
Sempra Renewables [Member]
Operating Leases [Line Items]
Increase (Decrease) In Operating Lease Future Minimum Payments, Due Current	$ (3)
Increase (Decrease) In Operating Lease Future Minimum Payments, Due In Two Years	(2)
Increase (Decrease) In Operating Lease Future Minimum Payments, Due In Three Years	(2)
Increase (Decrease) In Operating Lease Future Minimum Payments, Due In Four Years	(2)
Increase (Decrease) In Operating Lease Future Minimum Payments, Due In Five Years	(2)
Increase (Decrease) In Operating Lease Future Minimum Payments, Due Thereafter	(72)
Increase (Decrease) In Operating Leases Amount	$ (83)

Increase (Decrease) In Operating Lease Future Minimum Payments, Due Current.

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Increase (Decrease) In Operating Lease Future Minimum Payments, Due In Five Years.

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Increase (Decrease) In Operating Lease Future Minimum Payments, Due In Four Years.

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Increase (Decrease) In Operating Lease Future Minimum Payments, Due In Three Years.

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Increase (Decrease) In Operating Lease Future Minimum Payments, Due In Two Years.

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Increase (Decrease) In Operating Leases Amount.

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