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Net Sales (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021 | Mar. 31, 2020
Disaggregation of Revenue [Line Items] |  |  |
Total net sales | $ 6,820.9 | $ 5,438.4 | $ 5,274.2
Revenue payment terms | 30 days |  |
Remaining performance obligation, expected to be recognized over next 12 months, percentage | 60.00% |  |
Semiconductor Products |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total net sales | $ 6,698.9 | 5,335.5 | 5,177.3
Deferred revenue | 117.6 |  |
Semiconductor Products | Accrued Liabilities |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Deferred revenue | 73.2 |  |
Distributors |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total net sales | 3,248.7 | 2,737.4 | 2,626.9
Direct customers |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total net sales | 3,450.2 | 2,598.1 | 2,550.4
Licensees |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total net sales | 122.0 | 102.9 | 96.9
Microcontrollers |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total net sales | 3,814.8 | 2,961.0 | 2,817.9
Analog |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total net sales | 1,939.1 | 1,519.8 | 1,511.1
Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total net sales | $ 1,067.0 | $ 957.6 | $ 945.2

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