v3.25.2
Employee Benefit Plans (Tables)
 9 Months Ended
Jun. 30, 2025
Retirement Benefits [Abstract]  
Components of Pension and Other Postretirement Benefit Income
The following table summarizes the components of Net pension and other postretirement plan (income) expenses within the Condensed Consolidated Statements of Comprehensive Income:

Pension benefitsOther postretirement benefits
(In millions)2025202420252024
Three months ended June 30
Interest cost$17.4 $20.7 $0.3 $0.3 
Expected return on plan assets(18.1)(17.2)— — 
Amortization of prior service costs (credits)0.1 0.1 (0.6)(0.5)
Net periodic benefit (income) costs$(0.6)$3.6 $(0.3)$(0.2)
Nine months ended June 30
Interest cost$52.3 $62.5 $0.8 $0.9 
Expected return on plan assets(54.2)(51.5)— — 
Amortization of prior service costs (credits)0.1 0.1 (1.7)(1.6)
Net periodic benefit (income) costs$(1.8)$11.1 $(0.9)$(0.7)