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Business Acquisitions - Schedule of Purchased Intangible Assets (Details) - Microsemi Corporation - USD ($) $ in Millions |  | 3 Months Ended
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May 29, 2018 | Sep. 30, 2018
Business Acquisition [Line Items] |  |
Useful life (in years) | 9 years |
Purchased intangible assets | $ 5,466.9 |
Core and developed technology |  |
Business Acquisition [Line Items] |  |
Useful life (in years) | 15 years | 15 years
Purchased intangible assets | $ 4,312.1 | $ 4,310.0
Customer-related |  |
Business Acquisition [Line Items] |  |
Useful life (in years) | 12 years |
Purchased intangible assets | $ 326.9 |
Backlog |  |
Business Acquisition [Line Items] |  |
Useful life (in years) | 1 year | 1 year
Purchased intangible assets | $ 27.9 | $ 27.9
Other |  |
Business Acquisition [Line Items] |  |
Useful life (in years) | 4 years |
Purchased intangible assets | $ 5.8 |
In-process research and development |  |
Business Acquisition [Line Items] |  |
In-process research and development | $ 794.2 |

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