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Compensation and Benefit Plans (Workforce Reduction) (Details) (Employee Severance, Southern California Edison, USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Employee Severance | Southern California Edison
 
Restructuring Reserve Disclosures [Abstract]  
Estimated Cash Severance Payments $ 213
Balance, beginning of year 104
Additions 101
Payments (151)
Balance, end of year $ 54