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Pensions and Other Postretirement Benefits (Tables)
3 Months Ended
Mar. 31, 2024
Retirement Benefits [Abstract]  
Schedule of Components of Net Annual Benefit Cost (Income)
The following table summarizes the components of net annual benefit cost (income):
(in Millions)Three Months Ended March 31,
PensionsOther Benefits
2024202320242023
Service cost$0.8 $0.7 $— $— 
Interest cost11.9 12.6 0.1 0.1 
Expected return on plan assets(11.2)(11.9)— — 
Amortization of net actuarial and other (gain) loss3.5 4.0 (0.2)(0.2)
Recognized (gain) loss due to curtailments, settlements, and other0.1 — — — 
Net periodic benefit cost (income)$5.1 $5.4 $(0.1)$(0.1)