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Stock and Other Compensation Plans (Tables) | 12 Months Ended
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Sep. 30, 2025
Share-Based Payment Arrangement [Abstract] |
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity | The following summarizes information regarding the restricted stock units granted under the plan during the fiscal years ended September 30, 2025, 2024, and 2023:
| 2025 |  | 2024 |  | 2023
| Number of Restricted Units |  | Weighted Average Grant-Date Fair Value |  | Number of Restricted Units |  | Weighted Average Grant-Date Fair Value |  | Number of Restricted Units |  | Weighted Average Grant-Date Fair Value
Nonvested at beginning of year | 397,929 |  |  | $ | 113.78 |  |  | 389,957 |  |  | $ | 109.10 |  |  | 381,295 |  |  | $ | 105.69 |
Granted | 229,828 |  |  | 135.68 |  |  | 212,207 |  |  | 117.11 |  |  | 241,436 |  |  | 109.78 |
Vested | (215,806) |  |  | 111.75 |  |  | (201,834) |  |  | 108.56 |  |  | (220,929) |  |  | 104.05 |
Forfeited | (3,815) |  |  | 127.58 |  |  | (2,401) |  |  | 115.44 |  |  | (11,845) |  |  | 107.47 |
Nonvested at end of year | 408,136 |  |  | $ | 127.74 |  |  | 397,929 |  |  | $ | 113.78 |  |  | 389,957 |  |  | $ | 109.10 |

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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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