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Pension and Other Postretirement Employee Benefits (Tables)
6 Months Ended
Jun. 30, 2020
General Discussion Of Pension And Other Postretirement Benefits [Abstract]  
Components of Net Periodic Cost (Benefit)

The following tables detail the components of net periodic cost (benefit) of our pension plans and other postretirement employee benefits (OPEB):

 

 

Three Months Ended June 30,

 

 

 

Pension

 

 

OPEB

 

(in thousands)

 

2020

 

 

2019

 

 

2020

 

 

2019

 

Service cost

 

$

2,176

 

 

$

1,862

 

 

$

112

 

 

$

80

 

Interest cost

 

 

2,568

 

 

 

4,692

 

 

 

376

 

 

 

375

 

Expected return on plan assets

 

 

(3,151

)

 

 

(5,541

)

 

 

 

 

 

 

Amortization of prior service cost (credit)

 

 

28

 

 

 

53

 

 

 

(319

)

 

 

(2,211

)

Amortization of actuarial loss

 

 

3,559

 

 

 

3,321

 

 

 

417

 

 

 

200

 

Total net periodic cost (benefit)

 

$

5,180

 

 

$

4,387

 

 

$

586

 

 

$

(1,556

)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Six Months Ended June 30,

 

 

 

Pension

 

 

OPEB

 

(in thousands)

 

2020

 

 

2019

 

 

2020

 

 

2019

 

Service cost

 

$

4,466

 

 

$

3,883

 

 

$

254

 

 

$

185

 

Interest cost

 

 

6,132

 

 

 

9,231

 

 

 

751

 

 

 

794

 

Expected return on plan assets

 

 

(7,737

)

 

 

(11,095

)

 

 

 

 

 

 

Amortization of prior service cost (credit)

 

 

56

 

 

 

106

 

 

 

(638

)

 

 

(4,422

)

Amortization of actuarial loss

 

 

7,713

 

 

 

6,748

 

 

 

836

 

 

 

507

 

Net periodic cost (benefit) before pension settlement charge

 

 

10,630

 

 

 

8,873

 

 

 

1,203

 

 

 

(2,936

)

Pension settlement charge

 

 

42,988

 

 

 

 

 

 

 

 

 

 

Net periodic cost (benefit)

 

$

53,618

 

 

$

8,873

 

 

$

1,203

 

 

$

(2,936

)