v2.4.0.6
Commitments And Contingencies (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
 9 Months Ended
Jan. 27, 2012
sqft
Apr. 29, 2011
Commitments And Contingencies [Line Items]    
Accrued purchase commitments with contract manufacturers $ 3.2 $ 4.5
Future annual minimum lease payments 402.7  
Lease period of land, in years 99  
Office space for the headquarters, in sq ft 600,000  
Original cost of office space 149.6  
Percentage of residual guarantee 85.00%  
Synthetic lease residual guarantee deficiency reserve 32.4  
Synthetic lease residual guarantee deficiency 51.0  
Deferred revenue on recourse financing arrangements 2,545.8 2,314.9
Capital Purchase Commitments [Member]
    
Commitments And Contingencies [Line Items]    
Significant commitment 48.5  
Other Purchase Commitments [Member]
    
Commitments And Contingencies [Line Items]    
Significant commitment 230.7  
Contract Manufacturers [Member]
    
Commitments And Contingencies [Line Items]    
Significant commitment 220.4  
Financial Guarantee [Member]
    
Commitments And Contingencies [Line Items]    
Maximum guaranteed payment contingencies 101.2  
Deferred revenue on recourse financing arrangements 98.9  
Deferred cost of revenues on recourse financing arrangements $ 9.6  
Maximum [Member] | Software [Member]
    
Commitments And Contingencies [Line Items]    
Product warranty term, years 5  
Maximum [Member] | Hardware [Member]
    
Commitments And Contingencies [Line Items]    
Product warranty term, years 5  
Minimum [Member] | Software [Member]
    
Commitments And Contingencies [Line Items]    
Product warranty term, days 90  
Minimum [Member] | Hardware [Member]
    
Commitments And Contingencies [Line Items]    
Product warranty term, years 1