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Share-Based Compensation - Share-Based Compensation Expense (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |  |
Pre-tax effect of share-based compensation | $ 41.3 | $ 55.7 | $ 82.5 | $ 112.3
Income tax benefit | 8.8 | 11.8 | 17.6 | 23.8
Net income effect of share-based compensation | 32.5 | 43.9 | 64.9 | 88.5
Inventory |  |  |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |  |
Capitalized share-based compensation expense | 4.7 | 5.5 | 9.5 | 11.1
Share-based compensation expense previously capitalized | 6.5 | 9.1 | 14.2 | 17.9
Cost of sales |  |  |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |  |
Pre-tax effect of share-based compensation | 6.5 | 9.1 | 14.2 | 17.9
Research and development |  |  |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |  |
Pre-tax effect of share-based compensation | 19.8 | 26.1 | 39.9 | 52.7
Selling, general and administrative |  |  |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |  |
Pre-tax effect of share-based compensation | $ 15.0 | $ 20.5 | $ 28.4 | $ 41.7

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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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