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EMPLOYEE BENEFIT PLANS - Schedule of Projected Benefit Obligations, Accumulated Benefit Obligations, and Fair Value of Plan Assets (Details) - USD ($)
$ in Millions
Sep. 30, 2025
Sep. 30, 2024
U.S. Plans    
Defined Benefit Plan Disclosure [Line Items]    
Projected benefit obligation $ 0.3 $ 54.0
Accumulated benefit obligation 0.3 54.0
Fair value of plan assets 0.0 53.2
Non U.S. Plans    
Defined Benefit Plan Disclosure [Line Items]    
Projected benefit obligation 66.8 66.8
Accumulated benefit obligation 64.4 64.0
Fair value of plan assets $ 56.0 $ 51.1