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PENSION AND POSTRETIREMENT BENEFIT PLANS
 3 Months Ended
Mar. 31, 2020
Retirement Benefits [Abstract]  
PENSION AND POSTRETIREMENT BENEFIT PLANS PENSION AND POSTRETIREMENT BENEFIT PLANS

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



We did not make contributions to our defined benefit pension plans in each of the three months ended March 31, 2020 and 2019, respectively. The Coronavirus Aid, Relief, and Economic Security Act (CARES Act) became law on March 27, 2020 and allows for the deferral of contributions to a single employer pension plan otherwise due during 2020 to January 1, 2021. We deferred contributions to our defined benefit pension plans of approximately $5 million from the first quarter of 2020 until December 2020.