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Retirement Plans
 3 Months Ended
Dec. 31, 2024
Retirement Benefits [Abstract]  
Retirement Plans Retirement Plan
We have a defined benefit plan (“Pension Plan”) that we fund in accordance with its requirements and, where applicable, in amounts sufficient to satisfy the minimum funding requirements of applicable laws. The Pension Plan provides benefits based on years of service and compensation or at stated amounts for each year of service with an annual measurement date of September 30.
The components of net periodic cost for our Pension Plan are presented below:

Three months ended
December 31,
 20242023
 (in millions)
Service cost$0.2 $0.2 
Pension expense other than service:
Interest cost3.0 3.5 
Expected return on plan assets(3.6)(3.3)
Amortization of actuarial net loss0.6 0.8 
Pension expense other than service— 1.0 
Net periodic cost$0.2 $1.2 
The amortization of actuarial losses, net of income tax, is recorded as a component of Other comprehensive income. For each of the three months ended December 31, 2024 and 2023, the amortization of actuarial net loss is shown net of income tax of $0.2 million in the condensed consolidated statements of comprehensive income.