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Income Taxes - Additional Information (Details)
3 Months Ended 6 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2025
Mar. 31, 2024
Income Tax Disclosure [Abstract]        
Effective income tax rate reconciliation, percent 15.20% 15.10% 8.70% 17.50%