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Retirement Plans (Tables)
3 Months Ended
Dec. 31, 2024
Retirement Benefits [Abstract]  
Schedule of Net Periodic Pension and Postretirement Cost (Benefit)
The Company’s net periodic pension and postretirement costs for its material plans were as follows:
Three Months Ended
December 31,
 20242023
Service cost$0.6 $0.5 
Interest cost4.5 5.3 
Expected return on plan assets(5.4)(4.9)
Recognized net actuarial loss0.6 0.4 
Net periodic cost$0.3 $1.3