Business Acquisitions Business Acquisitions (Microsemi - Schedule of Purchased Intangible Assets) (Details) - Microsemi Corporation - USD ($) $ in Millions		3 Months Ended
	May 29, 2018	Jun. 30, 2018
Business Acquisition [Line Items]
Useful life (in years)	9 years
Purchased intangible assets	$ 4,722.0
Core/developed technology
Business Acquisition [Line Items]
Useful life (in years)	10 years	10 years
Purchased intangible assets	$ 3,803.0	$ 3,800.0
Customer-related
Business Acquisition [Line Items]
Useful life (in years)	10 years
Purchased intangible assets	$ 448.1
Backlog
Business Acquisition [Line Items]
Useful life (in years)	1 year	1 year
Purchased intangible assets	$ 36.9	$ 36.9
In-process technology
Business Acquisition [Line Items]
Indefinite-lived Intangible Assets Acquired	$ 434.0