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PENSION AND POSTRETIREMENT BENEFIT PLANS (Tables)
3 Months Ended
Mar. 31, 2020
Retirement Benefits [Abstract]  
Components of the net periodic benefit costs

The following table sets forth the components of the net periodic benefit costs for our defined benefit pension and postretirement benefit plans for the three months ended March 31, 2020 and 2019:
 
Three months ended March 31,
 
2020
 
2019
 
Pension
Benefit
 
Postretirement
Benefit
 
Pension
Benefit
 
Postretirement
Benefit
 
(in millions)
Service cost
$

 
$
1

 
$

 
$
1

Interest cost
1

 
1

 
1

 
1

Expected return on plan assets

 

 
(1
)
 

Recognized actuarial loss

 

 
1

 

Total
$
1

 
$
2

 
$
1

 
$
2