v3.26.1
Retirement Plans (Tables)
6 Months Ended
Mar. 31, 2026
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
March 31,
Six Months Ended
March 31,
 2026202520262025
Service cost$0.5 $0.6 $1.0 $1.2 
Interest cost4.5 4.5 9.0 9.0 
Expected return on plan assets(5.9)(5.3)(11.8)(10.7)
Recognized net actuarial loss0.7 0.6 1.4 1.2 
Net periodic (benefit) cost$(0.2)$0.4 $(0.4)$0.7