Investments - Non-Marketable Equity Securities (Details) - USD ($) $ in Millions	Apr. 02, 2017	Apr. 03, 2016
Non-marketable equity securities [Abstract]
Purchase of common stock of a privately-held company	$ 13.2	$ 10.0
Convertible Debt Securities
Non-marketable equity securities [Abstract]
Purchase of common stock of a privately-held company	2.0
Preferred Stock
Non-marketable equity securities [Abstract]
Purchase of common stock of a privately-held company	$ 3.2