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Compensation and Benefit Plans (Tables)
 6 Months Ended
Jun. 30, 2019
Pension Plans  
Defined Benefit Plan Disclosure [Line Items]  
Expense Components for Plans
Net periodic pension expense components for continuing operations are:
 
Three months ended June 30,
 
Six months ended June 30,
(in millions)
2019
 
2018
 
2019
 
2018
Edison International:
 
 
 
 
 
 
 
Service cost
$
32

 
$
32

 
$
64

 
$
64

Non-service cost (benefit)
 
 
 
 
 
 
 
Interest cost
39

 
35

 
78

 
70

Expected return on plan assets
(52
)
 
(56
)
 
(104
)
 
(113
)
Amortization of prior service cost
1

 
—

 
1

 
1

Amortization of net loss1
2

 
2

 
4

 
4

Regulatory adjustment
(4
)
 
3

 
(8
)
 
5

Total non-service benefit2
$
(14
)
 
$
(16
)
 
$
(29
)
 
$
(33
)
Total expense recognized
$
18

 
$
16

 
$
35

 
$
31

SCE:
 
 
 
 
 
 
 
Service cost
$
31

 
$
31

 
$
62

 
$
62

Non-service cost (benefit)
 
 
 
 
 
 
 
Interest cost
36

 
32

 
71

 
64

Expected return on plan assets
(49
)
 
(54
)
 
(98
)
 
(107
)
Amortization of prior service cost
1

 
—

 
1

 
1

Amortization of net loss1
2

 
2

 
3

 
3

Regulatory adjustment
(4
)
 
3

 
(8
)
 
5

Total non-service benefit2
$
(14
)
 
$
(17
)
 
$
(31
)
 
$
(34
)
Total expense recognized
$
17

 
$
14

 
$
31

 
$
28


1 
Includes the amount of net loss reclassified from other comprehensive loss. The amount reclassified for Edison International and SCE was $2 million and $2 million, respectively, for the three months ended June 30, 2019, and $4 million and $3 million, respectively, for the six months ended June 30, 2019. The amount reclassified for Edison International and SCE was $2 million and $2 million, respectively, for the three months ended June 30, 2018, and $4 million and $3 million, respectively, for the six months ended June 30, 2018.
2 Included in "Other income and expense" on Edison International's and SCE's consolidated statement of income.
PBOP Plan  
Defined Benefit Plan Disclosure [Line Items]  
Expense Components for Plans
Net periodic PBOP expense components for continuing operations for Edison International and SCE are:
 
Three months ended June 30,
 
Six months ended June 30,
(in millions)
2019
 
2018
 
2019
 
2018
Service cost
$
8

 
$
10

 
$
16

 
$
19

Non-service cost (benefit)
 
 
 
 
 
 
 
Interest cost
21

 
21

 
42

 
42

Expected return on plan assets
(28
)
 
(30
)
 
(56
)
 
(60
)
Amortization of prior service cost
—

 
(1
)
 
—

 
(1
)
   Amortization of net gain
(1
)
 
—

 
(2
)
 
—

 Regulatory adjustment
6

 
—

 
12

 
—

Total non-service cost benefit1
$
(2
)
 
$
(10
)
 
$
(4
)
 
$
(19
)
Total expense
$
6

 
$
—

 
$
12

 
$
—


1 Included in "Other income and expense" on Edison International's and SCE's consolidated statement of income.