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Income Taxes - Narrative (Details) - USD ($) | 6 Months Ended |
--- | --- | ---
Mar. 31, 2026 | Mar. 31, 2025 | Jul. 04, 2025
Income Tax Contingency [Line Items] |  |  |
Effective tax rate | 29.20% | 19.00% |
Effective tax rate statutory federal rate | 21.00% |  |
Percentage of bonus depreciation for acquired property placed in service |  |  | 100.00%
Unrecognized tax benefits | $ 0 |  |
One Big Beautiful Bill Act |  |  |
Income Tax Contingency [Line Items] |  |  |
Amortization period for acquired property |  |  | 5 years

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