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Intangible Assets and Goodwill - Goodwill by Reporting Segment (Details) $ in Millions | 6 Months Ended |
--- | --- | ---
Sep. 30, 2022 USD ($) unit | Mar. 31, 2022 USD ($)
Goodwill By Reporting Segment [Line Items] |  |
Goodwill | $ 6,673.6 | $ 6,673.6
Number of reporting units | unit | 2 |
Semiconductor Products Reporting Unit |  |
Goodwill By Reporting Segment [Line Items] |  |
Goodwill | $ 6,654.4 |
Technology Licensing Reporting Unit |  |
Goodwill By Reporting Segment [Line Items] |  |
Goodwill | $ 19.2 |

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