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Employee Benefit Plans (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]
Contributions by the Company to the plan	$ 13.7	$ 14.0	$ 13.2
Employer contribution, vesting period	4 years	4 years	4 years

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- Definition

Defined Contribution Plan, Employer Contribution, Vesting Period

+ References

No definition available.

+ Details

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- References

No definition available.

+ Details

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X

- Definition

Amount of discretionary contributions made by an employer to a defined contribution plan.

+ References

No definition available.

+ Details

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