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Stock-Based Compensation (Fair Value Assumptions) (Details) - Stock Options - $ / shares	9 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average per option grant date fair value	$ 12.44	$ 19.88
Assumptions Used For Options Grants [Abstract]
Risk free interest rate, minimum	4.48%	3.50%
Risk free interest rate, maximum	4.68%	3.98%
Expected term	6 years	6 years
Expected volatility rate		46.00%
Weighted average volatility	46.00%	46.00%
Expected dividend yield	0.00%	0.00%
Minimum
Assumptions Used For Options Grants [Abstract]
Expected volatility rate	46.00%
Maximum
Assumptions Used For Options Grants [Abstract]
Expected volatility rate	47.00%

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The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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The maximum risk-free interest rate assumption that is used in valuing an option on its own shares.

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The minimum risk-free interest rate assumption that is used in valuing an option on its own shares.

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Rate of weighted-average expected volatility for award under share-based payment arrangement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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