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Supplementary Financial Information (Unaudited) (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended12 Months Ended
Oct. 29, 2011
Jul. 30, 2011
Apr. 30, 2011
Jan. 29, 2011
Oct. 30, 2010
Jul. 31, 2010
May 01, 2010
Jan. 30, 2010
Oct. 29, 2011
Oct. 30, 2010
Oct. 31, 2009
Nov. 01, 2008
Supplementary Financial Information            
Revenue$ 716,134$ 757,902$ 790,780$ 728,504$ 769,990$ 720,290$ 668,240$ 602,983$ 2,993,320$ 2,761,503$ 2,014,908 
Cost of sales255,620248,262256,566246,331253,761240,088233,725234,5071,006,779[1]962,081[1]896,271[1] 
Gross margin460,514509,640534,214482,173516,229480,202434,515368,4761,986,5411,799,4221,118,637 
% of Revenue64.30%67.20%67.60%66.20%67.00%66.70%65.00%61.10%    
Research and development123,889128,476130,460122,745128,140126,987122,780114,398505,570[1]492,305[1]446,980[1] 
Selling, marketing, general and administrative99,094102,323105,268100,022102,349102,07097,66088,481406,707[1]390,560[1]333,184[1] 
Special charges2,23900000016,4832,23916,48353,6563,088
Total operating expenses225,222230,799235,728222,767230,489229,057220,440219,362914,516899,348833,820 
Operating income from continuing operations235,292278,841298,486259,406285,740251,145214,075149,1141,072,025900,074284,817 
% of Revenue33.00%37.00%38.00%36.00%37.00%35.00%32.00%25.00%    
Nonoperating (income) expenses:            
Interest expense6,0796,1594,0782,8302,7092,6142,5682,53819,14610,4294,094 
Interest income(2,183)(2,395)(2,197)(2,285)(2,426)(3,206)(2,025)(2,180)(9,060)(9,837)(15,621) 
Other, net396206(151)41(2,600)416(488)489492(2,183)(1,100) 
Total nonoperating (income) expense4,2923,9701,730586(2,317)(176)5584710,578(1,591)(12,627) 
Income from continuing operations before income taxes231,000274,871296,756258,820288,057251,321214,020148,2671,061,447901,665297,444 
% of Revenue32.00%36.00%38.00%36.00%37.00%35.00%32.00%25.00%    
Provision for income taxes47,47354,93654,93043,21463,06351,83046,88028,667200,553190,44050,036 
Income from continuing operations, net of tax183,527219,935241,826215,606224,994199,491167,140119,600860,894711,225247,408 
Gain on sale of discontinued operations0006,5000008596,500859  
Net income$ 183,527$ 219,935$ 241,826$ 222,106$ 224,994$ 199,491$ 167,140$ 120,459    
% of Revenue32.00%29.00%31.00%30.00%29.00%28.00%25.00%20.00%    
Earnings per share - basic            
Income from continuing operations$ 0.61$ 0.73$ 0.81$ 0.72$ 0.75$ 0.67$ 0.56$ 0.40$ 2.88$ 2.39$ 0.85 
Net income$ 0.61$ 0.73$ 0.81$ 0.74$ 0.75$ 0.67$ 0.56$ 0.41$ 2.90$ 2.39$ 0.85 
Earnings per share - diluted            
Income from continuing operations$ 0.60$ 0.71$ 0.78$ 0.70$ 0.73$ 0.65$ 0.55$ 0.39$ 2.79$ 2.33$ 0.85 
Net income$ 0.60$ 0.71$ 0.78$ 0.72$ 0.73$ 0.65$ 0.55$ 0.40$ 2.81$ 2.33$ 0.85 
Shares used to compute earnings per share (in thousands):            
Shares used to compute earnings per share - Basic298,910299,616299,923299,218298,228298,027297,825295,469299,417297,387291,385 
Shares used to compute earnings per share - Diluted305,734308,744309,619308,848306,711306,168305,836304,730308,236305,861292,698 
Dividends declared per share$ 0.25$ 0.25$ 0.22$ 0.22$ 0.22$ 0.22$ 0.20$ 0.20$ 0.94$ 0.84$ 0.80 
[1]Includes stock-based compensation expense as follows: