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Compensation and Benefit Plans (Tables)
 6 Months Ended
Jun. 30, 2015
Pension Plans  
Pension and Other Postretirement Benefits  
Expense Components for Plans
Pension expense components for continuing operations are:
 
Three months ended June 30,
 
Six months ended June 30,
(in millions)
2015
 
2014
 
2015
 
2014
Edison International:
 
 
 
 
 
 
 
Service cost
$
35

 
$
29

 
$
70

 
$
59

Interest cost
42

 
48

 
83

 
93

Expected return on plan assets
(57
)
 
(60
)
 
(114
)
 
(117
)
Amortization of prior service cost
1

 
2

 
2

 
3

Amortization of net loss1
9

 
1

 
18

 
2

Expense under accounting standards
$
30

 
$
20

 
$
59

 
$
40

Regulatory adjustment
(2
)
 
30

 
(3
)
 
61

Total expense recognized
$
28

 
$
50

 
$
56

 
$
101

SCE:
 
 
 
 
 
 
 
Service cost
$
34

 
$
29

 
$
69

 
$
58

Interest cost
37

 
44

 
75

 
88

Expected return on plan assets
(54
)
 
(56
)
 
(107
)
 
(112
)
Amortization of prior service cost
2

 
1

 
3

 
2

Amortization of net loss1
8

 
1

 
15

 
1

Expense under accounting standards
$
27

 
$
19

 
$
55

 
$
37

Regulatory adjustment
(1
)
 
30

 
(2
)
 
61

Total expense recognized
$
26

 
$
49

 
$
53

 
$
98


1 
Includes the amount of net loss reclassified from other comprehensive income. The amount reclassified for Edison International and SCE was $4 million and $2 million, respectively, for the three months ended June 30, 2015, and $7 million and $4 million, respectively, for the six months ended June 30, 2015. The amount reclassified for Edison International and SCE was $1 million and $1 million, respectively, for the three months ended June 30, 2014 and $3 million and $2 million, respectively, for the six months ended June 30, 2014.
Postretirement Benefits Other Than Pensions  
Pension and Other Postretirement Benefits  
Expense Components for Plans
PBOP expense components for continuing operations are:
 
Three months ended June 30,
 
Six months ended June 30,
(in millions)
2015
 
2014
 
2015
 
2014
Edison International:
 
 
 
 
 
 
 
Service cost
$
12

 
$
11

 
$
24

 
$
22

Interest cost
28

 
27

 
57

 
54

Expected return on plan assets
(29
)
 
(28
)
 
(57
)
 
(56
)
Amortization of prior service cost
(3
)
 
(9
)
 
(6
)
 
(18
)
Amortization of net loss
6

 
—

 
12

 
—

Total expense
$
14

 
$
1

 
$
30

 
$
2

SCE:
 
 
 
 
 
 
 
Service cost
$
12

 
$
11

 
$
24

 
$
22

Interest cost
28

 
27

 
56

 
54

Expected return on plan assets
(28
)
 
(28
)
 
(56
)
 
(56
)
Amortization of prior service cost
(3
)
 
(9
)
 
(6
)
 
(18
)
Amortization of net loss
5

 
—

 
11

 
—

Total expense
$
14

 
$
1

 
$
29

 
$
2
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
 
10

Payments
 
(24
)
Balance at June 30, 2015
 
$
21