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Earnings per Share (Tables) | 9 Months Ended
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Jan. 31, 2022
Earnings Per Share [Abstract] |
Computation of earnings per common share, basic and diluted | The following table sets forth the computation of net income per common share and net income per common share – assuming dilution under the two-class method.
| Three Months Ended January 31, |  | Nine Months Ended January 31,
| 2022 |  | 2021 |  | 2022 |  | 2021
Net income | $ | 69.7 |  |  | $ | 261.5 |  |  | $ | 429.6 |  |  | $ | 729.3 |
Less: Net income allocated to participating securities | 0.1 |  |  | 1.1 |  |  | 1.2 |  |  | 3.1 |
Net income allocated to common stockholders | $ | 69.6 |  |  | $ | 260.4 |  |  | $ | 428.4 |  |  | $ | 726.2 |
Weighted-average common shares outstanding | 108.1 |  |  | 112.1 |  |  | 108.1 |  |  | 113.1 |
Add: Dilutive effect of stock options | 0.1 |  |  | — |  |  | — |  |  | — |
Weighted-average common shares outstanding – assuming dilution | 108.2 |  |  | 112.1 |  |  | 108.1 |  |  | 113.1 |
Net income per common share | $ | 0.64 |  |  | $ | 2.32 |  |  | $ | 3.96 |  |  | $ | 6.42 |
Net income per common share – assuming dilution | $ | 0.64 |  |  | $ | 2.32 |  |  | $ | 3.96 |  |  | $ | 6.42 |

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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 http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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