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Debt and Financing Arrangements - Summary of Unsecured Credit Facility (Details) - 2018 and 2022 Credit Facilities | Sep. 30, 2022 | Sep. 30, 2021
--- | --- | ---
Debt Instrument [Line Items] |  |
Weighted average rates | 2.29% | 1.89%
Minimum |  |
Debt Instrument [Line Items] |  |
Range of effective rates | 1.08% | 1.06%
Maximum |  |
Debt Instrument [Line Items] |  |
Range of effective rates | 4.18% | 3.64%

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