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Income Taxes (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Income Tax Disclosure [Abstract]        
Effective tax rate 10.80% 16.00% 15.40% 18.40%
Unrecognized tax benefit $ 84.8   $ 84.8