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CONSOLIDATED STATEMENT OF OPERATIONS - USD ($)
shares in Millions, $ in Millions
 12 Months Ended
Oct. 31, 2020
Oct. 31, 2019
Oct. 31, 2018
Net revenue:      
Net revenue $ 5,339 $ 5,163 $ 4,914
Costs and expenses:      
Cost of revenue 2,502 2,358 2,234
Research and development 495 404 387
Selling, general and administrative 1,496 1,460 1,389
Total costs and expenses 4,493 4,222 4,010
Income from operations 846 941 904
Interest income 8 36 38
Interest expense (78) (74) (75)
Other income (expense), net 66 16 79
Income before taxes 842 919 946
Provision (benefit) for income taxes 123 (152) 630
Net income $ 719 $ 1,071 $ 316
Net income per share:      
Net income per share - basic $ 2.33 $ 3.41 $ 0.98
Net income per share - diluted $ 2.30 $ 3.37 $ 0.97
Weighted Averge Shares Used In Computing Net Income Per Share      
Basic (in shares) 309 314 321
Diluted (in shares) 312 318 325
Products      
Net revenue:      
Net revenue $ 3,993 $ 3,877 $ 3,746
Costs and expenses:      
Cost of revenue 1,796 1,680 1,595
Services and Other      
Net revenue:      
Net revenue 1,346 1,286 1,168
Costs and expenses:      
Cost of revenue $ 706 $ 678 $ 639