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Compensation and Benefit Plans (Tables)
 3 Months Ended
Mar. 31, 2020
Pension Plans  
Defined Benefit Plan Disclosure [Line Items]  
Expense Components for Plans
Net periodic pension expense components are:
 
 
Three months ended March 31,
(in millions)
 
2020
 
2019
Edison International:
 
 
 
 
Service cost
 
$
31

 
$
32

Non-service cost (benefit)
 
 
 
 
Interest cost
 
31

 
39

Expected return on plan assets
 
(54
)
 
(52
)
Amortization of net loss1
 
3

 
2

Regulatory adjustment
 
2

 
(4
)
Total non-service benefit2
 
(18
)
 
(15
)
Total expense recognized
 
$
13

 
$
17

SCE:
 
 
 
 
Service cost
 
$
30

 
$
31

Non-service cost (benefit)
 
 
 
 
Interest cost
 
28

 
35

Expected return on plan assets
 
(51
)
 
(49
)
Amortization of net loss1
 
2

 
1

Regulatory adjustment
 
2

 
(4
)
Total non-service benefit2
 
(19
)
 
(17
)
Total expense recognized
 
$
11

 
$
14


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, 2020. The amount reclassified for Edison International and SCE was $2 million and $1 million, respectively, for the three months ended March 31, 2019.
2 
Included in "Other income" 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 Edison International and SCE are:
 
 
Three months ended March 31,
(in millions)
 
2020
 
2019
Service cost
 
$
9

 
$
8

Non-service cost (benefit)
 
 
 
 
Interest cost
 
17

 
21

Expected return on plan assets
 
(30
)
 
(28
)
  Amortization of net gain
 
(4
)
 
(1
)
Regulatory adjustment
 
8

 
6

Total non-service benefit1
 
(9
)
 
(2
)
Total expense
 
$
—

 
$
6


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