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Share-Based Compensation (Tables) | 6 Months Ended
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Sep. 30, 2025
Share-Based Payment Arrangement [Abstract] |
Schedule of Share-based Compensation Expense | The following table presents the details of the Company's share-based compensation expense (in millions):
|  |  | Three Months Ended September 30, |  | Six Months Ended September 30,
|  |  |  |  |  |  | 2025 |  | 2024 |  | 2025 |  | 2024
Cost of sales(1) |  |  |  |  |  |  | $ | 8.3 |  |  | $ | 4.3 |  |  | $ | 16.0 |  |  | $ | 10.9 |
Research and development |  |  |  |  |  |  | 33.2 |  |  | 26.9 |  |  | 62.3 |  |  | 50.2 |
Selling, general and administrative |  |  |  |  |  |  | 20.1 |  |  | 15.1 |  |  | 36.2 |  |  | 29.2 |
Pre-tax effect of share-based compensation |  |  |  |  |  |  | 61.6 |  |  | 46.3 |  |  | 114.5 |  |  | 90.3 |
Income tax benefit |  |  |  |  |  |  | 12.8 |  |  | 9.7 |  |  | 23.7 |  |  | 18.9 |
Net income effect of share-based compensation |  |  |  |  |  |  | $ | 48.8 |  |  | $ | 36.6 |  |  | $ | 90.8 |  |  | $ | 71.4 |
(1) During the three and six months ended September 30, 2025, $5.9 million and $9.5 million, respectively, of share-based compensation expense was capitalized to inventory and $8.3 million and $16.0 million, respectively, of previously capitalized share-based compensation expense in inventory was sold. During the three and six months ended September 30, 2024, $5.0 million and $10.0 million, respectively, of share-based compensation expense was capitalized to inventory and $4.3 million and $10.9 million, respectively, of previously capitalized share-based compensation expense in inventory was sold.

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- Definition Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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