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Segment, Geographic, And Significant Customer Information (Schedule Of Property And Equipment, Net By Geographic Areas) (Details) (USD $)
In Millions, unless otherwise specified
Apr. 27, 2012
Apr. 29, 2011
Segment, Geographic, And Significant Customer Information [Abstract]    
Concentration risk, percentage 10.00% 10.00%
United States $ 1,038.9 $ 840.2
International 98.3 71.4
Property and equipment, net, Total $ 1,137.2 $ 911.6