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Net Income Per Common Share (Tables) | 12 Months Ended
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Mar. 31, 2022
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):
| Fiscal Year Ended March 31, |  |  |  |
| 2022 |  | 2021 |  | 2020 |  |  |  |  |  |  |  |
Net income | $ | 1,285.5 |  |  | $ | 349.4 |  |  | $ | 570.6 |  |  |  |  |  |  |  |  |
Basic weighted average common shares outstanding | 552.3 |  |  | 519.2 |  |  | 477.7 |  |  |  |  |  |  |  |  |
Dilutive effect of stock options and RSUs | 7.1 |  |  | 7.0 |  |  | 7.0 |  |  |  |  |  |  |  |  |
Dilutive effect of 2015 Senior Convertible Debt | 2.6 |  |  | 9.4 |  |  | 27.4 |  |  |  |  |  |  |  |  |
Dilutive effect of 2017 Senior Convertible Debt | 3.1 |  |  | 3.4 |  |  | 0.1 |  |  |  |  |  |  |  |  |
Dilutive effect of 2017 Junior Convertible Debt | 0.8 |  |  | 2.2 |  |  | 0.2 |  |  |  |  |  |  |  |  |
Diluted weighted average common shares outstanding | 565.9 |  |  | 541.2 |  |  | 512.4 |  |  |  |  |  |  |  |  |
Basic net income per common share | $ | 2.33 |  |  | $ | 0.67 |  |  | $ | 1.19 |  |  |  |  |  |  |  |  |
Diluted net income per common share | $ | 2.27 |  |  | $ | 0.65 |  |  | $ | 1.11 |  |  |  |  |  |  |  |  |
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):
| Fiscal Year Ended March 31, |  |  |  |
| 2022 |  | 2021 |  | 2020 |  |  |  |  |  |  |  |
2015 Senior Convertible Debt | $ | 30.10 |  |  | $ | 30.45 |  |  | $ | 30.90 |  |  |  |  |  |  |  |  |
2017 Senior Convertible Debt | $ | 46.93 |  |  | $ | 47.48 |  |  | $ | 48.19 |  |  |  |  |  |  |  |  |
2020 Senior Convertible Debt | $ | 93.34 |  |  | $ | 93.43 |  |  | $ | — |  |  |  |  |  |  |  |  |
2017 Junior Convertible Debt | $ | 46.10 |  |  | $ | 46.65 |  |  | $ | 47.34 |  |  |  |  |  |  |  |  |

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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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