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Employee Stock Purchase and Stock Incentive Plans - Narrative (Details) $ in Millions	12 Months Ended
	Sep. 30, 2022 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Proceeds from stock options exercised | $	$ 12.4
1999 SIP | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock and restricted stock units outstanding (in shares) | shares	252
1999 SIP | Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercisable options outstanding, weighted average remaining contractual life (years)	2 years 2 months 12 days
1999 ODSP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercisable options outstanding, weighted average remaining contractual life (years)	3 years 1 month 6 days

X

- Definition

Amount of cash inflow from exercise of option under share-based payment arrangement.

+ References

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+ References

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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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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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