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Pension Benefit Obligations - Multiemployer (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Pension Benefit Obligations
Aggregate contributions to these multiemployer plans	$ 3.0	$ 2.9

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- References

No definition available.

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- Definition

Amount of contribution received by defined benefit plan from employer which increases plan assets.

+ References

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