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Compensation and Benefit Plans (Tables)
 3 Months Ended
Mar. 31, 2015
Pension Plans  
Pension and Other Postretirement Benefits  
Expense Components for Plans
Pension expense components for continuing operations are:
 
Edison International
 
SCE
 
Three months ended March 31,
(in millions)
2015
 
2014
 
2015
 
2014
Service cost
$
35

 
$
30

 
$
35

 
$
29

Interest cost
41

 
45

 
38

 
44

Expected return on plan assets
(57
)
 
(57
)
 
(53
)
 
(56
)
Amortization of prior service cost
1

 
1

 
1

 
1

Amortization of net loss1
9

 
1

 
7

 
—

Expense under accounting standards
$
29

 
$
20

 
$
28

 
$
18

Regulatory adjustment
(1
)
 
31

 
(1
)
 
31

Total expense recognized
$
28

 
$
51

 
$
27

 
$
49


1 
Includes the amount of net loss reclassified from other comprehensive loss. The amount reclassified for Edison International and SCE was $3 million and $2 million, respectively, for the three months ended March 31, 2015, and $2 million and $1 million, respectively, for the three months ended March 31, 2014.
Postretirement Benefits Other Than Pensions  
Pension and Other Postretirement Benefits  
Expense Components for Plans
PBOP expense components for continuing operations are:
 
Edison International
 
SCE
 
Three months ended March 31,
(in millions)
2015
 
2014
 
2015
 
2014
Service cost
$
12

 
$
11

 
$
12

 
$
11

Interest cost
29

 
27

 
28

 
27

Expected return on plan assets
(28
)
 
(28
)
 
(28
)
 
(28
)
Amortization of prior service credit
(3
)
 
(9
)
 
(3
)
 
(9
)
Amortization of net loss
6

 
—

 
6

 
—

Total expense
$
16

 
$
1

 
$
15

 
$
1
Southern California Edison  
Workforce Reductions [Abstract]  
Workforce reductions
The following table provides a summary of changes in the accrued severance liability associated with these reductions:
(in millions)
 
 
Balance at January 1, 2015
 
$
35

Additions
 
—

Payments
 
(23
)
Balance at March 31, 2015
 
$
12