Significant Accounting Policies (Property And Equipment) (Details)	12 Months Ended
	Apr. 27, 2012
Buildings [Member]
Depreciation Life (years)	40 years
Building Improvements [Member]
Depreciation Life (years)	10 years
Furniture and Fixtures [Member]
Depreciation Life (years)	5 years
Computer, Production, Engineering And Other Equipment [Member]
Depreciation Life (years)	3 years
Software [Member] | Minimum [Member]
Depreciation Life (years)	3 years
Software [Member] | Maximum [Member]
Depreciation Life (years)	5 years
Leasehold Improvements [Member]
Depreciation Life (years)	Shorter of remaining lease term or useful life