Share-Based Compensation (Market-Based Deferred Stock Unit Valuation Assumptions) (Details) - Market-Based Deferred Stock Unit	9 Months Ended
Jun. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility	32.50%
Risk-free interest rate	4.00%
Expected dividend yield	2.40%

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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