Derivative Financial Instruments and Hedging Activities 2 (Details) (USD $) In Thousands	3 Months Ended
	Jul. 27, 2011	Jul. 28, 2010
Foreign Exchange Contract [Member]
Cash flow hedges:
Net (losses)/gains recognized in other comprehensive loss (effective portion)	$ 7,386	$ (3,167)
Net gains/(losses) reclassified from other comprehensive loss into earnings (effective portion):
Sales	2,104	380
Cost of products sold	(5,588)	(3,793)
Selling, general and administrative expenses	123	(97)
Other (expense)/income, net	5,150	(3,642)
Interest income/(expense)	107	(2)
Total	1,896	(7,154)
Derivatives not designated as hedging instruments:
Net (losses)/gains recognized in other (expense)/income, net	(8,863)	(5,285)
Total amount recognized in statement of income	(6,967)	(12,439)
Interest Rate Contract [Member]
Fair value hedges:
Net (losses)/gains recognized in other (expense)/income, net	(13,123)	1,681
Derivatives not designated as hedging instruments:
Total amount recognized in statement of income	(13,123)	1,681
Cross Currency Interest Rate Contract [Member]
Cash flow hedges:
Net (losses)/gains recognized in other comprehensive loss (effective portion)	18,329	9,855
Net gains/(losses) reclassified from other comprehensive loss into earnings (effective portion):
Other (expense)/income, net	20,264	12,000
Interest income/(expense)	(1,506)	(891)
Total	18,758	11,109
Derivatives not designated as hedging instruments:
Total amount recognized in statement of income	$ 18,758	$ 11,109