Business Acquisitions (Schedule of Purchased Intangible Assets) (Details) - USD ($) $ in Thousands					12 Months Ended
	Apr. 04, 2016	Aug. 03, 2015	Jul. 17, 2014	Apr. 01, 2014	Mar. 31, 2017
Core/developed technology
Business Acquisition [Line Items]
Purchased intangible assets					$ 1,215,700
Backlog
Business Acquisition [Line Items]
Purchased intangible assets					40,300
Other intangible assets
Business Acquisition [Line Items]
Purchased intangible assets					$ 1,800
Atmel Corporation
Business Acquisition [Line Items]
Useful life (in years)	9 years
Purchased intangible assets	$ 1,888,392
Atmel Corporation | Core/developed technology
Business Acquisition [Line Items]
Useful life (in years)	11 years
Purchased intangible assets	$ 1,074,987
Atmel Corporation | In-process technology
Business Acquisition [Line Items]
Purchased intangible assets	$ 140,700
Atmel Corporation | Customer-related
Business Acquisition [Line Items]
Useful life (in years)	6 years
Purchased intangible assets	$ 630,600
Atmel Corporation | Backlog
Business Acquisition [Line Items]
Useful life (in years)	1 year
Purchased intangible assets	$ 40,300
Atmel Corporation | Other intangible assets
Business Acquisition [Line Items]
Useful life (in years)	5 years
Purchased intangible assets	$ 1,805
Micrel Incorporated
Business Acquisition [Line Items]
Purchased intangible assets		$ 273,500
Micrel Incorporated | Core/developed technology
Business Acquisition [Line Items]
Useful life (in years)		10 years
Purchased intangible assets		$ 175,800
Micrel Incorporated | In-process technology
Business Acquisition [Line Items]
Purchased intangible assets		$ 21,000
Micrel Incorporated | Customer-related
Business Acquisition [Line Items]
Useful life (in years)		5 years
Purchased intangible assets		$ 71,100
Micrel Incorporated | Backlog
Business Acquisition [Line Items]
Useful life (in years)		1 year
Purchased intangible assets		$ 5,600
ISSC Technologies Corporation
Business Acquisition [Line Items]
Purchased intangible assets			$ 147,800
ISSC Technologies Corporation | Core/developed technology
Business Acquisition [Line Items]
Useful life (in years)			10 years
Purchased intangible assets			$ 68,900
ISSC Technologies Corporation | In-process technology
Business Acquisition [Line Items]
Useful life (in years)			10 years
Purchased intangible assets			$ 27,200
ISSC Technologies Corporation | Customer-related
Business Acquisition [Line Items]
Useful life (in years)			3 years
Purchased intangible assets			$ 51,100
ISSC Technologies Corporation | Backlog
Business Acquisition [Line Items]
Useful life (in years)			1 year
Purchased intangible assets			$ 600
Supertex Inc.
Business Acquisition [Line Items]
Purchased intangible assets				$ 89,600
Supertex Inc. | Core/developed technology
Business Acquisition [Line Items]
Useful life (in years)				10 years
Purchased intangible assets				$ 68,900
Supertex Inc. | In-process technology
Business Acquisition [Line Items]
Useful life (in years)				10 years
Purchased intangible assets				$ 1,900
Supertex Inc. | Customer-related
Business Acquisition [Line Items]
Useful life (in years)				2 years
Purchased intangible assets				$ 17,700
Supertex Inc. | Backlog
Business Acquisition [Line Items]
Useful life (in years)				1 year
Purchased intangible assets				$ 1,100