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Customer-Funded Research & Development (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Jul. 27, 2013	Jul. 28, 2012
Customer-Funded Research & Development
Revenue from customer-funded R&D	$ 10.3	$ 6.6

- Definition

The amount of compensation earned (contract income) under a research and development arrangement accounted for as a contract to perform research and development for others.

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