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DERIVATIVE FINANCIAL INSTRUMENTS (Details)
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Mar. 31, 2015
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Dec. 31, 2014
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| S D G E Segment [Member] | ||||||||
| Schedule Of Commodity Derivative Volumes [Line Items] | ||||||||
| Commodity derivative volumes, natural gas (in millions of million British thermal units) | 57 | [1] | 55 | [1] | ||||
| Commodity derivative volumes, congestion revenue rights (in millions of megawatt hours) | 24 | [2] | 27 | [2] | ||||
| So Cal Gas Segment [Member] | ||||||||
| Schedule Of Commodity Derivative Volumes [Line Items] | ||||||||
| Commodity derivative volumes, natural gas (in millions of million British thermal units) | 1 | [1] | 1 | [1] | ||||
| Sempra Natural Gas Segment [Member] | ||||||||
| Schedule Of Commodity Derivative Volumes [Line Items] | ||||||||
| Commodity derivative volumes, natural gas (in millions of million British thermal units) | 7 | [1] | 29 | [1] | ||||
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