Subsequent Events Business Acquisitions (Narrative) (Details) - USD ($) $ in Thousands, shares in Millions		12 Months Ended
	Apr. 04, 2016	Mar. 31, 2016
Subsequent Event [Line Items]
Non cash consideration transferred in the form of share-based payment awards (amount)		$ 4,052
Subsequent Event [Member] | Atmel Corporation [Member]
Subsequent Event [Line Items]
Payments to Acquire Businesses, Gross	$ 2,980,000
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares	10.1
Non cash consideration transferred in the form of share-based payment awards (amount)	$ 6,700
Business Combination, Consideration Transferred	3,470,000
Payments to Acquire Businesses, less portion funded from Line of Credit Borrowings	2,040,000
Proceeds from Lines of Credit	940,000
Deferred Tax Liabilities, Intangible Assets	$ 143,200