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Net Income Per Common Share (Tables) | 6 Months Ended
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Sep. 30, 2021
Earnings Per Share [Abstract] |
Schedule of Computation of Basic and Diluted Earnings Per Share | The following table sets forth the computation of basic and diluted net income per common share (in millions, except per share amounts):
|  |  | Three Months Ended September 30, |  | Six Months Ended September 30,
|  |  |  |  |  |  | 2021 |  | 2020 |  | 2021 |  | 2020
Net income |  |  |  |  |  |  | $ | 242.0 |  |  | $ | 73.6 |  |  | $ | 494.8 |  |  | $ | 197.2 |
Basic weighted average common shares outstanding |  |  |  |  |  |  | 551.3 |  |  | 512.0 |  |  | 549.4 |  |  | 503.7 |
Dilutive effect of stock options and RSUs |  |  |  |  |  |  | 7.3 |  |  | 6.7 |  |  | 7.4 |  |  | 6.2 |
Dilutive effect of 2015 Senior Convertible Debt |  |  |  |  |  |  | 3.1 |  |  | 10.9 |  |  | 3.7 |  |  | 12.7 |
Dilutive effect of 2017 Senior Convertible Debt |  |  |  |  |  |  | 3.3 |  |  | 3.4 |  |  | 3.7 |  |  | 1.7 |
Dilutive effect of 2017 Junior Convertible Debt |  |  |  |  |  |  | 0.9 |  |  | 2.3 |  |  | 1.3 |  |  | 1.2 |
Diluted weighted average common shares outstanding |  |  |  |  |  |  | 565.9 |  |  | 535.3 |  |  | 565.5 |  |  | 525.5 |
Basic net income per common share |  |  |  |  |  |  | $ | 0.44 |  |  | $ | 0.14 |  |  | $ | 0.90 |  |  | $ | 0.39 |
Diluted net income per common share |  |  |  |  |  |  | $ | 0.43 |  |  | $ | 0.14 |  |  | $ | 0.87 |  |  | $ | 0.38 |
Schedule of Convertible Debt | The following is the weighted average conversion price per share used in calculating the dilutive effect (see Note 6 for details on the Convertible Debt):
|  |  | Three Months Ended September 30, |  | Six Months Ended September 30,
|  |  |  |  |  |  | 2021 |  | 2020 |  | 2021 |  | 2020
2015 Senior Convertible Debt |  |  |  |  |  |  | $ | 30.14 |  |  | $ | 30.49 |  |  | $ | 30.19 |  |  | $ | 30.55 |
2017 Senior Convertible Debt |  |  |  |  |  |  | $ | 47.00 |  |  | $ | 47.54 |  |  | $ | 47.07 |  |  | $ | 47.64 |
2020 Senior Convertible Debt |  |  |  |  |  |  | $ | 93.37 |  |  | $ | — |  |  | $ | 93.39 |  |  | $ | — |
2017 Junior Convertible Debt |  |  |  |  |  |  | $ | 46.17 |  |  | $ | 46.71 |  |  | $ | 46.24 |  |  | $ | 46.80 |

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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=124432515&loc=d3e3550-109257 + Details
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