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Share-Based Payments (Tables) | 9 Months Ended
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Jun. 30, 2021
Share-based Payment Arrangement [Abstract] |
Restricted Stock Activity | The transactions for restricted shares and restricted share units for the nine months ended June 30, 2021 were as follows:
| Shares /Units |  | Weighted- average Grant-date Fair Value
Non-vested at September 30, 2020 | 750,322 |  |  | $ | 40.88 |
Granted | 499,050 |  |  | 30.06 |
Vested | (109,365) |  |  | 55.40 |
Expired or forfeited | (38,467) |  |  | 55.79 |
Non-vested at June 30, 2021 | 1,101,540 |  |  | $ | 34.01 |
Schedule of Assumptions Used in Estimating Fair Value | The following table indicates the assumptions used in estimating the fair value of certain stock-based awards granted during the nine-month period ended June 30, 2021.
| Restricted Share Units |  | Stock Options
Expected volatility | 42.9 | % |  | 41.9 | %
Dividend yield | 3.2 | % |  | 3.1 | %
Average risk-free interest rate | 0.2 | % |  | 0.5 | %
Average expected term (years) | 3.0 |  | 5.0

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + 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 No definition available. + Details
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