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v3.25.3

Employee Benefit Plans (Details) - USD ($) $ in Millions | 12 Months Ended
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Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2023
Retirement Benefits [Abstract] |  |  |
Employee contribution to plan, maximum percentage | 25.00% |  |
Employer contributions into 401(k) plans | $ 10.2 | $ 9.5 | $ 8.9
Employee incentive plans expenses | $ 60.8 | $ 62.5 | $ 57.8

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