SONGS NDT (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2008
Facilities Under Joint Ownership (Details) [Abstract]
Asset Retirement Obligation, Nuclear Power Plant	$ 756
Utility Share Of Nuclear Decommissioning Costs		768
Utility Share Of Nuclear Decommissioning Costs, Adjusted For Inflation	$ 912

Utility share of nuclear decommissioning costs, adjusted for inflation.

No definition available.

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Namespace Prefix:	sre_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant