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Net (Loss) Income Per Common Share (Tables) | 9 Months Ended
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Dec. 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 (loss) income per common share (in millions, except per share amounts):
|  |  | Three Months Ended December 31, |  | Nine Months Ended December 31,
|  |  |  |  |  |  | 2024 |  | 2023 |  | 2024 |  | 2023
Net (loss) income |  |  |  |  |  |  | $ | (53.6) |  |  | $ | 419.2 |  |  | $ | 154.1 |  |  | $ | 1,752.2 |
Basic weighted average common shares outstanding |  |  |  |  |  |  | 537.4 |  |  | 540.8 |  |  | 536.9 |  |  | 543.0 |
Dilutive effect of RSUs |  |  |  |  |  |  | — |  |  | 4.9 |  |  | 4.4 |  |  | 5.0 |
Dilutive effect of 2015 Senior Convertible Debt |  |  |  |  |  |  | — |  |  | 0.2 |  |  | 0.2 |  |  | 0.2 |
Dilutive effect of 2017 Senior Convertible Debt |  |  |  |  |  |  | — |  |  | 0.6 |  |  | 0.6 |  |  | 0.8 |
Diluted weighted average common shares outstanding |  |  |  |  |  |  | 537.4 |  |  | 546.5 |  |  | 542.1 |  |  | 549.0 |
Basic net (loss) income per common share |  |  |  |  |  |  | $ | (0.10) |  |  | $ | 0.78 |  |  | $ | 0.29 |  |  | $ | 3.23 |
Diluted net (loss) income per common share |  |  |  |  |  |  | $ | (0.10) |  |  | $ | 0.77 |  |  | $ | 0.28 |  |  | $ | 3.19 |
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 December 31, |  | Nine Months Ended December 31,
|  |  |  |  |  |  | 2024 |  | 2023 |  | 2024 |  | 2023
2015 Senior Convertible Debt |  |  |  |  |  |  | $ | 28.30 |  |  | $ | 28.95 |  |  | $ | 28.49 |  |  | $ | 29.10 |
2017 Senior Convertible Debt |  |  |  |  |  |  | $ | 44.14 |  |  | $ | 45.14 |  |  | $ | 44.42 |  |  | $ | 45.38 |
2020 Senior Convertible Debt(1) |  |  |  |  |  |  | $ | — |  |  | $ | 91.78 |  |  | $ | 91.08 |  |  | $ | 92.05 |
2024 Senior Convertible Debt |  |  |  |  |  |  | $ | 121.83 |  |  | $ | — |  |  | $ | 121.84 |  |  | $ | — |
2017 Junior Convertible Debt(2) |  |  |  |  |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 44.81 |
(1) The weighted average conversion price per share for the 2020 Senior Convertible Debt was prior to the settlement of the outstanding principal amount in November 2024. (2) 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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