DERIVATIVE FINANCIAL INSTRUMENTS (Details) |
Jun. 30, 2015 |
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) | [1] | 57 | 55 | ||||
| Commodity derivative volumes, congestion revenue rights (in millions of megawatt hours) | [2] | 23 | 27 | ||||
| Commodity derivative volumes, electric power (in millions of megawatt hours) | [2] | 1 | 0 | ||||
| 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] | 0 | 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) | [1] | 29 | 29 | ||||
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