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EMPLOYEE BENEFIT PLANS (Tables)
 9 Months Ended
Sep. 30, 2023
Pension Plan  
Defined Benefit Plans and Other Postretirement Benefit Plans  
Schedule of Aggregated Net Periodic Benefit Cost and Other Benefit Cost
The following table sets forth the aggregated net periodic benefit cost for all pension plans for the third quarters and nine months ended September 30, 2023 and September 30, 2022:
(In millions)Pension Benefits
Third Quarter EndedNine Months Ended
 September 30, 2023September 30, 2022September 30, 2023September 30, 2022
Service cost$0.2 $0.1 $0.5 $0.5 
Interest cost1.7 0.9 5.0 2.5 
Expected return on assets(1.8)(1.7)(5.4)(4.7)
Amortization of:
Prior service cost0.5 1.5 1.6 3.9 
Actuarial loss— — — — 
Settlement cost— — — — 
Net periodic benefit cost$0.6 $0.8 $1.7 $2.2 
Other Benefits  
Defined Benefit Plans and Other Postretirement Benefit Plans  
Schedule of Aggregated Net Periodic Benefit Cost and Other Benefit Cost
The following table sets forth the aggregated net periodic benefit cost for the other post-retirement benefit plan for the third quarters and nine months ended September 30, 2023 and September 30, 2022:
(In millions)Other Benefits
Third Quarter EndedNine Months Ended
September 30, 2023September 30, 2022September 30, 2023September 30, 2022
Service cost$— $— $— $— 
Interest cost0.1 — 0.2 0.1 
Expected return on assets— — — — 
Amortization of:
Prior service cost— 0.1 — 0.1 
Actuarial loss— — — — 
Settlement cost— — — — 
Net periodic benefit cost$0.1 $0.1 $0.2 $0.2