DERIVATIVE FINANCIAL INSTRUMENTS 5 (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Cash Flow Hedge Disclosure [Line Items]
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months	$ 24
Maximum length of time hedged in cash flow hedge	15
Joint Venture Maximum Length Of Time Hedged In Cash Flow Hedge	21
Cash flow hedge ineffectiveness	0	0
Cash Flow Hedge Gain (Loss) To Be Reclassified Within Twelve Months For Noncontrolling Interest	12
San Diego Gas and Electric Company and Subsidiary [Member]
Cash Flow Hedge Disclosure [Line Items]
Maximum length of time hedged in cash flow hedge	5
Cash Flow Hedge Gain (Loss) To Be Reclassified Within Twelve Months For Noncontrolling Interest	11
Southern California Gas Company [Member]
Cash Flow Hedge Disclosure [Line Items]
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months	$ 0