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Earnings per Share (Tables) | 6 Months Ended
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Mar. 31, 2023
Earnings Per Share [Abstract] |
Schedule of Calculation of Numerator and Denominator in Earnings Per Share | The following is a reconciliation of the numerator and denominator of the diluted earnings per share computations for the periods presented below.
| Three Months Ended March 31, |  | Six Months Ended March 31,
(in millions, except share amounts) | 2023 |  | 2022 |  | 2023 |  | 2022
Numerator: |  |  |  |  |  |  |
Net income | $ | 41.7 |  |  | $ | 64.0 |  |  | $ | 118.3 |  |  | $ | 105.7 |
Less: Allocation to participating securities | (1.5) |  |  | (1.8) |  |  | (4.0) |  |  | (3.1) |
Net income allocated to common stockholders | $ | 40.2 |  |  | $ | 62.2 |  |  | $ | 114.3 |  |  | $ | 102.6 |
Denominator: |  |  |  |  |  |  |
Weighted average number of: |  |  |  |  |  |  |
Common shares outstanding | 19,930,027 |  |  | 19,573,871 |  |  | 19,850,052 |  |  | 19,477,540 |
Dilutive potential common shares outstanding: |  |  |  |  |  |  |
Share-based awards | 691,167 |  |  | 438,838 |  |  | 703,861 |  |  | 452,507 |
Diluted weighted-average common shares | 20,621,194 |  |  | 20,012,709 |  |  | 20,553,913 |  |  | 19,930,047 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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