CALIFORNIA UTILITIES' REGULATORY MATTERS - SCHEDULE OF UTILITY PROJECTS (Details) (USD $)	12 Months Ended	3 Months Ended
	Dec. 31, 2014	Mar. 31, 2015	Jun. 11, 2014
Pipeline Safety Phase 1 [Member] \| San Diego Gas and Electric Company [Member]
Schedule Of Utility Projects [Line Items]
Pipeline Safety Plan Regulatory Account		$ 4,000,000	$ 100,000
Pipeline Safety Phase 1 [Member] \| Southern California Gas Company [Member]
Schedule Of Utility Projects [Line Items]
Pipeline Safety Plan Regulatory Account		104,000,000	46,000,000
Disallowed Costs Impact On Earnings After Tax	5,000,000
South Orange County Reliability Enhancement [Member] \| San Diego Gas and Electric Company [Member]
Schedule Of Utility Projects [Line Items]
Estimated Project Cost, Lower Range		400,000,000
Estimated Project Cost, Upper Range		500,000,000
Cleveland National Forest Transmissions Projects [Member] \| San Diego Gas and Electric Company [Member]
Schedule Of Utility Projects [Line Items]
Estimated Project Cost, Lower Range		400,000,000
Estimated Project Cost, Upper Range		450,000,000
Southern Gas System Member [Member] \| Utility Subsidiaries [Member]
Schedule Of Utility Projects [Line Items]
Estimated Project Cost, Lower Range		800,000,000
Estimated Project Cost, Upper Range		850,000,000
Sycamore Penasquitos Transmission Project [Member] \| San Diego Gas and Electric Company [Member]
Schedule Of Utility Projects [Line Items]
Estimated Project Cost, Lower Range		120,000,000
Estimated Project Cost, Upper Range		$ 150,000,000
Public Utilities Requested Basis Point Return On Equity Adder, Denied		100
Public Utilities Abandoned Plant Cost Recovery Approved, Percentage		100.00%