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Fair Value Measurements - Summary of Carrying Value and Estimated Fair Value of all Debt (Parenthetical) (Details) | Sep. 30, 2023 | Jun. 30, 2023 | Sep. 30, 2022 | May 31, 2021
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3.75% Convertible Notes Due 2026 |  |  |  |
Fair value measurement |  |  |  |
Interest rate (as a percent) | 3.75% | 3.75% | 3.75% | 3.75%

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