Investments - Non-Marketable Equity Securities (Details) - USD ($) $ in Millions	Apr. 01, 2018	Apr. 02, 2017
Non-marketable equity securities [Abstract]
Purchase of common stock of a privately-held company	$ 27.3	$ 13.2
Preferred Stock
Non-marketable equity securities [Abstract]
Purchase of common stock of a privately-held company	$ 14.1

Original amount of cost-method investments at the acquisition date.

No definition available.

Name:	us-gaap_CostMethodInvestmentsOriginalCost
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant