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CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS (Unaudited) - USD ($)
shares in Millions, $ in Millions
 3 Months Ended 9 Months Ended
Jul. 31, 2021
Jul. 31, 2020
Jul. 31, 2021
Jul. 31, 2020
Net revenue:        
Net revenue $ 1,586 $ 1,261 $ 4,659 $ 3,856
Costs and expenses:        
Cost of revenue 734 592 2,152 1,807
Research and development 113 92 325 393
Selling, general and administrative 403 347 1,230 1,109
Total costs and expenses 1,250 1,031 3,707 3,309
Income from operations 336 230 952 547
Interest income 0 1 1 7
Interest expense (21) (19) (60) (59)
Other income (expense), net 12 7 19 64
Income before taxes 327 219 912 559
Provision for income taxes 63 20 144 62
Net income $ 264 $ 199 $ 768 $ 497
Net income per share        
Basic $ 0.87 $ 0.64 $ 2.52 $ 1.61
Diluted $ 0.86 $ 0.64 $ 2.50 $ 1.59
Weighted average shares used in computing net income per share:        
Basic 303 309 305 309
Diluted 306 312 307 312
Product        
Net revenue:        
Net revenue $ 1,188 $ 932 $ 3,510 $ 2,878
Costs and expenses:        
Cost of revenue 521 422 1,534 1,293
Service and Other        
Net revenue:        
Net revenue 398 329 1,149 978
Costs and expenses:        
Cost of revenue $ 213 $ 170 $ 618 $ 514