XML 38 R28.htm IDEA: XBRL DOCUMENT v3.22.0.1
Retirement Plans (Tables)
3 Months Ended
Dec. 31, 2021
Retirement Benefits [Abstract]  
Schedule of Net Periodic Benefit Cost The components of net periodic benefit cost for our pension plans are presented below.
Three months ended
December 31,
 20212020
 (in millions)
Service cost$0.3 $0.4 
Pension costs (benefits) other than service:
Interest cost2.4 2.5 
Expected return on plan assets(3.8)(3.9)
Amortization of actuarial net loss0.4 0.6 
Pension benefits other than service(1.0)(0.8)
Net periodic benefit$(0.7)$(0.4)