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Fair Value Measurements - Measurement Inputs (Details) - Fair Value, Inputs, Level 3 - Market approach | Sep. 30, 2025 | Sep. 30, 2024
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Appraised value less estimated selling costs |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Individually evaluated collateral-dependent loans | 0.08 | 0.08
Lower of appraised value or listing price less estimated selling costs |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
OREO and other repossessed assets | 0.08 | 0.08

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