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Stock-based Compensation (Tables) | 12 Months Ended
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Sep. 30, 2025
Share-Based Payment Arrangement [Abstract] |
Schedule Of Restricted Stock and Restricted Stock Unit Activity | Fiscal 2025 activity of restricted stock units subject to performance and/or market conditions is presented below:
|  | Units |  |  | Weighted Average Grant Date Fair Value Per Unit |
Non-vested at September 30, 2024 |  |  | 289,205 |  |  | $ | 73.36 |
Granted |  |  | 103,780 |  |  | $ | 76.52 |
Adjusted for performance |  |  | 21,469 |  |  | $ | 65.02 |
Vested |  |  | (100,784 | ) |  | $ | 65.02 |
Forfeited |  |  | (69,166 | ) |  | $ | 74.67 |
Non-vested at September 30, 2025 |  |  | 244,504 |  |  | $ | 75.62 |
Time-vested restricted stock and stock unit activity for fiscal 2025 is presented below:
|  | Shares/ Units |  |  | Weighted Average Grant Date Fair Value Per Share |
Non-vested at September 30, 2024 |  |  | 85,559 |  |  | $ | 64.13 |
Granted |  |  | 57,030 |  |  | $ | 72.00 |
Vested |  |  | (42,677 | ) |  | $ | 66.36 |
Forfeited |  |  | (23,348 | ) |  | $ | 67.61 |
Non-vested at September 30, 2025 |  |  | 76,564 |  |  | $ | 67.20 |
Schedule Of Stock Option Valuation Assumptions | The significant assumptions used in the Monte Carlo simulations are as follows:
|  | 2025 |  | 2024 |  | 2023
Risk-free interest rate |  | 4.33% |  | 4.66% |  | 4.26%
Expected dividend yield of stock |  | — |  | — |  | —
Expected volatility of stock |  | 22.2% |  | 23.3% |  | 33.8%
Performance period (in years) |  | 3.0 |  | 3.0 |  | 3.0
Schedule Of Share-based Compensation Arrangement, Expensed and Capitalized | The amounts of compensation cost recognized for share-based compensation arrangements are presented below:
|  | 2025 |  |  | 2024 |  |  | 2023 |
Total compensation cost |  | $ | 7.8 |  |  | $ | 6.6 |  |  | $ | 11.2 |
Compensation cost capitalized |  |  | (1.1 | ) |  |  | (0.8 | ) |  |  | (1.4 | )
Compensation cost recognized in net income |  |  | 6.7 |  |  |  | 5.8 |  |  |  | 9.8 |
Income tax benefit recognized in net income |  |  | (1.5 | ) |  |  | (1.3 | ) |  |  | (2.2 | )
Compensation cost recognized in net income, net of income tax |  | $ | 5.2 |  |  | $ | 4.5 |  |  | $ | 7.6 |

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- Definition Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Subparagraph (f)(2) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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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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