XML 74 R49.htm IDEA: XBRL DOCUMENT v3.3.0.814
Derivative Instruments (Additional Disclosures) (Details) - Southern California Edison - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Dec. 31, 2014
Other Current Assets | Commodity Contracts          
Derivatives          
Collateral already posted $ 32,000,000   $ 32,000,000   $ 36,000,000
Electric Utility | Economic hedges          
Derivatives          
Aggregate fair value of all derivative liabilities with credit-risk-related contingent features 29,000,000   29,000,000   53,000,000
Collateral already posted 0   0   $ 13,000,000
Potential amount of collateral to be posted if contingencies triggered 42,000,000   42,000,000    
Realized losses (28,000,000) $ (18,000,000) (103,000,000) $ (59,000,000)  
Unrealized (losses) gains $ (67,000,000) $ 138,000,000 $ (152,000,000) $ 80,000,000