Acquisitions and Divestitures - Fiscal 2014 Divestitures (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended	0 Months Ended
May 03, 2014	Apr. 27, 2013	Apr. 28, 2012	Feb. 10, 2014 Lumidigm [Member] investment
Business Acquisition [Line Items]
Number of investments				1
Cost Basis				$ 4.1
Sale of investment	6.1	0	0	7.3
Realized gain				3.2
Proceeds From the Sale of Assets, Escrow Amount				$ 1.1

For investments in debt and equity securities accounted for at cost, the excess of net sale proceeds over the carrying amount of investments disposed of during the period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 7

-Subparagraph c, d

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.7(c))

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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