Quarterly report pursuant to Section 13 or 15(d)

Retirement Benefits (Details)

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Retirement Benefits (Details) - USD ($)
$ in Millions
 3 Months Ended
Dec. 31, 2022
Dec. 31, 2021
U.S. Pension Benefits    
Defined Benefit Plan Disclosure [Line Items]    
Service costs $ 0.0 $ 0.0
Interest costs 2.8 1.5
Expected return on plan assets (3.4) (2.7)
Amortization of net loss (gain) 0.1 0.4
Net periodic pension (benefit) cost (0.5) (0.8)
Non-U.S. Pension Benefits    
Defined Benefit Plan Disclosure [Line Items]    
Service costs 0.5 0.5
Interest costs 0.9 0.2
Expected return on plan assets (0.3) (0.2)
Amortization of net loss (gain) (0.2) 0.6
Net periodic pension (benefit) cost $ 0.9 $ 1.1