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Net Income Per Common Share (Tables) | 12 Months Ended
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Mar. 31, 2024
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, |  |  |  |
| 2024 |  | 2023 |  | 2022 |  |  |  |  |  |  |  |
Net income | $ | 1,906.9 |  |  | $ | 2,237.7 |  |  | $ | 1,285.5 |  |  |  |  |  |  |  |  |
Basic weighted average common shares outstanding | 542.0 |  |  | 550.4 |  |  | 552.3 |  |  |  |  |  |  |  |  |
Dilutive effect of stock options and RSUs | 5.1 |  |  | 5.2 |  |  | 7.1 |  |  |  |  |  |  |  |  |
Dilutive effect of 2015 Senior Convertible Debt | 0.2 |  |  | 0.6 |  |  | 2.6 |  |  |  |  |  |  |  |  |
Dilutive effect of 2017 Senior Convertible Debt | 0.7 |  |  | 1.0 |  |  | 3.1 |  |  |  |  |  |  |  |  |
Dilutive effect of 2017 Junior Convertible Debt | — |  |  | 0.1 |  |  | 0.8 |  |  |  |  |  |  |  |  |
Diluted weighted average common shares outstanding | 548.0 |  |  | 557.3 |  |  | 565.9 |  |  |  |  |  |  |  |  |
Basic net income per common share | $ | 3.52 |  |  | $ | 4.07 |  |  | $ | 2.33 |  |  |  |  |  |  |  |  |
Diluted net income per common share | $ | 3.48 |  |  | $ | 4.02 |  |  | $ | 2.27 |  |  |  |  |  |  |  |  |
Schedule of Convertible Debt | The following is the weighted average conversion price per share used in calculating the dilutive effect (see Note 5 for details on the Convertible Debt):
| Fiscal Year Ended March 31, |  |  |  |
| 2024 |  | 2023 |  | 2022 |  |  |  |  |  |  |  |
2015 Senior Convertible Debt | $ | 29.02 |  |  | $ | 29.58 |  |  | $ | 30.10 |  |  |  |  |  |  |  |  |
2017 Senior Convertible Debt | $ | 45.26 |  |  | $ | 46.14 |  |  | $ | 46.93 |  |  |  |  |  |  |  |  |
2020 Senior Convertible Debt | $ | 91.91 |  |  | $ | 92.82 |  |  | $ | 93.34 |  |  |  |  |  |  |  |  |
2017 Junior Convertible Debt(1) | $ | 44.81 |  |  | $ | 45.32 |  |  | $ | 46.10 |  |  |  |  |  |  |  |  |
(1) The weighted average conversion price per share for the 2017 Junior Convertible Debt was prior to the settlement of the outstanding principal amount in May 2023.

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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 -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
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