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Pension Benefits and Postretirement Benefits Other Than Pensions
 9 Months Ended
Sep. 30, 2019
Retirement Benefits [Abstract]  
Pension Benefits and Postretirement Benefits Other Than Pensions Pension Benefits and Postretirement Benefits Other Than Pensions
The Company sponsors a qualified defined benefit pension plan (the “Pension Plan”) that covers approximately 8,650 participants and beneficiaries, of which 1,250 are active employees. Effective June 30, 2016, benefit accruals were frozen for substantially all of the participants under the Pension Plan, and, effective January 1, 2006, the Pension Plan was closed to new hires. The components of Pension Income for the Pension Plan for the nine and three months ended September 30, 2019 and 2018 were:
 
 
Nine Months Ended
 
Three Months Ended
(Dollars in Millions)
 
Sep 30,
2019
 
Sep 30,
2018
 
Sep 30,
2019
 
Sep 30,
2018
Interest Cost on Projected Benefit Obligation
 
$
16.8

 
$
15.2

 
$
5.6

 
$
5.0

Expected Return on Plan Assets
 
(22.9
)
 
(21.7
)
 
(7.6
)
 
(7.3
)
Amortization of Net Actuarial Loss
 
2.2

 
3.2

 
0.7

 
1.1

Total Pension Benefit Recognized
 
$
(3.9
)
 
$
(3.3
)
 
$
(1.3
)
 
$
(1.2
)

On August 22, 2019, the Company made a voluntary cash contribution of $55.3 million to the Pension Plan.
The Company sponsors two other than pension postretirement benefit (“OPEB”) plans (together the “OPEB Plans”) that together provide medical, dental and/or life insurance benefits to approximately 525 retired and 550 active employees.
Note 11 - Pension Benefits and Postretirement Benefits Other Than Pensions (continued)
The components of OPEB benefits for the OPEB Plans for the nine and three months ended September 30, 2019 and 2018 were:
 
 
Nine Months Ended
 
Three Months Ended
(Dollars in Millions)
 
Sep 30,
2019
 
Sep 30,
2018
 
Sep 30,
2019
 
Sep 30,
2018
Service Cost
 
$
0.1

 
$
0.1

 
$
—

 
$
—

Interest Cost on Accumulated Postretirement Benefit Obligation
 
0.3

 
0.3

 
—

 
0.1

Amortization of Prior Service Credit
 
(1.0
)
 
(1.4
)
 
(0.3
)
 
(0.5
)
Amortization of Net Gain
 
(1.8
)
 
(1.0
)
 
(0.8
)
 
(0.3
)
Total OPEB Benefit Recognized
 
$
(2.4
)
 
$
(2.0
)
 
$
(1.1
)
 
$
(0.7
)

The non-service cost component of the Pension Plan and OPEB Plans are presented within the Interest and Other Expenses line item in the Condensed Consolidated Statement of Income.