CALIFORNIA UTILITIES' REGULATORY MATTERS - WILDFIRE COST RECOVERY (Details) - San Diego Gas and Electric Company [Member] $ in Millions	3 Months Ended
	Sep. 30, 2016 USD ($)
Public Utilities, General Disclosures [Line Items]
Requested recovery	$ 379.0
Incurred costs	2,400.0
Insurance reimbursement	1,100.0
Third party settlement recoveries	824.0
FERC jurisdictional rates	$ 80.0
Voluntary shareholder contribution percentage	10.00%
WEMA balance	$ 42.0
FERC-approved wildfire damage expenses	$ 23.1