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Shareholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions | Sep. 30, 2024 | Sep. 30, 2023
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Equity [Abstract] |  |
Treasury stock, shares | 7,354,237 | 7,267,021
Shares approved to repurchase | 100,000,000 |
Aggregate purchase price | $ 150.8 |
Closing stock price | $ 35.27 |
Remaining shares available for future purchases under share repurchase program | 2,800,000 |

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