Financing Arrangements (Details) (USD $) In Millions	3 Months Ended
	Jul. 27, 2011	Jul. 28, 2010	Apr. 27, 2011
Financing Arrangements [Abstract]
Financing Arrangement Term	3 years
Amount of accounts receivable securitization program	$ 175
Initial cash funding under receivable securitization program	118.7	116.2
Cash proceeds from receivables sold through accounts receivable securitization program	89.7	32.0
Fair value of deferred purchase price	56.2		173.9
Cash proceeds from deferred purchase price of accounts receivable securitization program	117.7	51.5
Trade receivables sold without recourse	$ 168		$ 146	[1]

[1] The year-end condensed consolidated balance sheet data was derived from audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States of America