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Fair Value Measurements - Narrative (Details) - USD ($) | Sep. 30, 2023 | Sep. 30, 2022
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Fair Value, Measurements, Nonrecurring | Level 3 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Nonrecurring fair value measurements | $ 0 | $ 0

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