v2.4.1.9

CALIFORNIA UTILITIES' REGULATORY MATTERS - SCHEDULE OF REGULATORY AMOUNTS 3 (Details) (Southern California Gas Company [Member], USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended | 12 Months Ended | 36 Months Ended
--- | --- | --- | --- | ---
Mar. 31, 2015 | Dec. 31, 2015 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2014
Impact Of 2010 Tax Act [Line Items] |  |  |  |  |  |  |
Increase Due To Bonus Depreciation Extension, Net Of Tax | $ 1,400 sre_IncreaseDueToBonusDepreciationExtensionNetOfTax | $ 2,500 sre_IncreaseDueToBonusDepreciationExtensionNetOfTax |  |  |  |  | $ 11,300 sre_IncreaseDueToBonusDepreciationExtensionNetOfTax
Increase Due To Bonus Depreciation Extension, Before Tax |  |  | $ 6,600 sre_IncreaseDueToBonusDepreciationExtensionBeforeTax | $ 6,400 sre_IncreaseDueToBonusDepreciationExtensionBeforeTax | $ 6,300 sre_IncreaseDueToBonusDepreciationExtensionBeforeTax | $ 6,400 sre_IncreaseDueToBonusDepreciationExtensionBeforeTax |
First Quarter [Member] |  |  |  |  |  |  |
Seasonal Factors [Line Items] |  |  |  |  |  |  |
Percentage Revenue Recognized Straight Line | 25.00%sre_PercentageRevenueRecognizedStraightLine / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember / sre_ScheduleOfSeasonalFactorsAxis = sre_FirstQuarterMember |  |  |  |  |  |
Percentage Revenue Recognized Seasonal | 34.00%sre_PercentageRevenueRecognizedSeasonal / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember / sre_ScheduleOfSeasonalFactorsAxis = sre_FirstQuarterMember |  |  |  |  |  |
Second Quarter [Member] |  |  |  |  |  |  |
Seasonal Factors [Line Items] |  |  |  |  |  |  |
Percentage Revenue Recognized Straight Line | 25.00%sre_PercentageRevenueRecognizedStraightLine / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember / sre_ScheduleOfSeasonalFactorsAxis = sre_SecondQuarterMember |  |  |  |  |  |
Percentage Revenue Recognized Seasonal | 21.00%sre_PercentageRevenueRecognizedSeasonal / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember / sre_ScheduleOfSeasonalFactorsAxis = sre_SecondQuarterMember |  |  |  |  |  |
Third Quarter [Member] |  |  |  |  |  |  |
Seasonal Factors [Line Items] |  |  |  |  |  |  |
Percentage Revenue Recognized Straight Line | 25.00%sre_PercentageRevenueRecognizedStraightLine / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember / sre_ScheduleOfSeasonalFactorsAxis = sre_ThirdQuarterMember |  |  |  |  |  |
Percentage Revenue Recognized Seasonal | 16.00%sre_PercentageRevenueRecognizedSeasonal / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember / sre_ScheduleOfSeasonalFactorsAxis = sre_ThirdQuarterMember |  |  |  |  |  |
Fourth Quarter [Member] |  |  |  |  |  |  |
Seasonal Factors [Line Items] |  |  |  |  |  |  |
Percentage Revenue Recognized Straight Line | 25.00%sre_PercentageRevenueRecognizedStraightLine / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember / sre_ScheduleOfSeasonalFactorsAxis = sre_FourthQuarterMember |  |  |  |  |  |
Percentage Revenue Recognized Seasonal | 29.00%sre_PercentageRevenueRecognizedSeasonal / dei_LegalEntityAxis = sre_SouthernCaliforniaGasCompanyMember / sre_ScheduleOfSeasonalFactorsAxis = sre_FourthQuarterMember |  |  |  |  |  |

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