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Derivative Instruments and Hedging Activities (Tables) (Southern California Edison)
 12 Months Ended
Dec. 31, 2013
Southern California Edison
  
Derivative Instruments and Hedging Activities Disclosures [Line Items]  
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]
The following table summarizes the gross and net fair values of SCE's commodity derivative instruments:
 
 
December 31, 2013
 
 
 
 
Derivative Assets
 
Derivative Liabilities
 
 
(in millions)
 
Short-Term
 
Long-Term
 
Subtotal
 
Short-Term
 
Long-Term
 
Subtotal
 
Net
Liability
Commodity derivative contracts
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Gross amounts recognized
 
$
141

 
$
251

 
$
392

 
$
178

 
$
1,045

 
$
1,223

 
$
831

Gross amounts offset in consolidated balance sheets
 
(19
)
 
—

 
(19
)
 
(19
)
 
—

 
(19
)
 
—

Cash collateral posted1
 
—

 
—

 
—

 
(7
)
 
(3
)
 
(10
)
 
(10
)
Net amounts presented in the consolidated balance sheets
 
$
122

 
$
251

 
$
373

 
$
152

 
$
1,042

 
$
1,194

 
$
821

 
 
December 31, 2012
 
 
 
 
Derivative Assets
 
Derivative Liabilities
 
 
(in millions)
 
Short-Term
 
Long-Term
 
Subtotal
 
Short-Term
 
Long-Term
 
Subtotal
 
Net
Liability
Commodity derivative contracts
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Gross amounts recognized
 
$
151

 
$
91

 
$
242

 
$
186

 
$
954

 
$
1,140

 
$
898

Gross amounts offset in consolidated balance sheets
 
(22
)
 
(6
)
 
(28
)
 
(22
)
 
(6
)
 
(28
)
 
—

Cash collateral posted1
 
—

 
—

 
—

 
(38
)
 
(9
)
 
(47
)
 
(47
)
Net amounts presented in the consolidated balance sheets
 
$
129

 
$
85

 
$
214

 
$
126

 
$
939

 
$
1,065

 
$
851

1 
In addition, at December 31, 2013 and 2012, SCE had posted $19 million and $8 million, respectively, of collateral that is not offset against derivative liabilities and is reflected in "Other current assets" on the consolidated balance sheets.
Derivative Instruments, Gain (Loss) [Table Text Block]
The following table summarizes the components of SCE's economic hedging activity:
 
 
Years ended December 31,
(in millions)
 
2013
 
2012
 
2011
Realized losses
 
$
(56
)
 
$
(227
)
 
$
(165
)
Unrealized gains (losses)
 
93

 
125

 
(768
)
Notional Volumes of Derivative Instruments
The following table summarizes the notional volumes of derivatives used for SCE hedging activities:
 
 
Economic Hedges
 
Unit of
December 31,
Commodity
Measure
2013
 
2012
Electricity options, swaps and forwards
GWh
6,274

 
15,884
Natural gas options, swaps and forwards
Bcf
12

 
100
Congestion revenue rights
GWh
149,234

 
149,774
Tolling arrangements
GWh
87,991

 
101,485