Income Taxes - Narrative (Details)  | 
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Mar. 31, 2025  | 
Mar. 31, 2024  | 
Mar. 31, 2025  | 
Mar. 31, 2024  | 
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| Income Tax Disclosure [Abstract] | ||||
| Effective income tax rate reconciliation, (benefit) expense | 19.40% | 23.70% | 19.40% | 28.60% | 
| X | ||||||||||
- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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| X | ||||||||||
- References No definition available. 
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