CALIFORNIA UTILITIES' REGULATORY MATTERS - SCHEDULE OF UTILITY PROJECTS (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2016	Dec. 31, 2014	Jun. 11, 2014
Southern Gas System Member [Member] | Total Estimated Cost [Member]
Schedule of Utility Projects [Line Items]
Impairment Charge, After Tax	$ 13,000
Impairment Charge Pre Tax	21,000
Pipeline Safety And Reliability Project [Member] | Total Estimated Cost [Member]
Schedule of Utility Projects [Line Items]
Revised Estimated Project Cost	633,000
San Diego Gas and Electric Company [Member] | Pipeline Safety Enhancement Plan [Member]
Schedule of Utility Projects [Line Items]
Pipeline Safety Plan Regulatory Account	15,000
Recovery Requested, PSEP Costs	100		$ 100
San Diego Gas and Electric Company [Member] | Sycamore Penasquitos Transmission Project [Member] | Minimum Range [Member]
Schedule of Utility Projects [Line Items]
Estimated Project Cost	120,000
Revised Estimated Project Cost	250,000
San Diego Gas and Electric Company [Member] | Sycamore Penasquitos Transmission Project [Member] | Maximum Range [Member]
Schedule of Utility Projects [Line Items]
Estimated Project Cost	150,000
Revised Estimated Project Cost	300,000
San Diego Gas and Electric Company [Member] | Pipeline Testing/Replacing 1956 to 1961 [Member]
Schedule of Utility Projects [Line Items]
Disallowed Costs Impact On Earnings After Tax	500
San Diego Gas and Electric Company [Member] | Cleveland National Forest Transmissions Projects [Member] | Total Estimated Cost [Member]
Schedule of Utility Projects [Line Items]
Estimated Project Cost	680,000
San Diego Gas and Electric Company [Member] | Cleveland National Forest Projects Distribution Level Facilities [Member] | Total Estimated Cost [Member]
Schedule of Utility Projects [Line Items]
Estimated Project Cost	210,000
San Diego Gas and Electric Company [Member] | Cleveland National Forest Projects Transmission Level Facilities [Member] | Total Estimated Cost [Member]
Schedule of Utility Projects [Line Items]
Estimated Project Cost	470,000
Southern California Gas Company [Member] | Pipeline Safety Enhancement Plan [Member]
Schedule of Utility Projects [Line Items]
Disallowed Costs Impact On Earnings After Tax		$ 5,000
Pipeline Safety Plan Regulatory Account	195,000
Recovery Requested, PSEP Costs	26,800		$ 46,000
Southern California Gas Company [Member] | Pipeline Testing/Replacing 1956 to 1961 [Member]
Schedule of Utility Projects [Line Items]
Disallowed Costs Impact On Earnings After Tax	$ 3,600