CALIFORNIA UTILITIES' REGULATORY MATTERS - SCHEDULE OF REGULATORY AMOUNTS 2 (Details) (San Diego Gas and Electric Company and Subsidiary [Member], Loss from Catastrophes [Member], USD $) In Millions, unless otherwise specified	Mar. 31, 2014
San Diego Gas and Electric Company and Subsidiary [Member] | Loss from Catastrophes [Member]
Regulatory Loss Contingencies [Line Items]
Potential After-Tax Earnings Impact	$ 210