CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS (Unaudited) - USD ($)
shares in Millions, $ in Millions
 3 Months Ended 6 Months Ended
Apr. 30, 2017
Apr. 30, 2016
Apr. 30, 2017
Apr. 30, 2016
Net revenue [Abstract]        
Products $ 634 $ 613 $ 1,240 $ 1,219
Services and other 119 118 239 233
Total net revenue 753 731 1,479 1,452
Costs and expenses:        
Cost of products 273 263 527 530
Cost of services and other 67 62 135 124
Total costs 340 325 662 654
Research and development 119 108 227 216
Selling, general and administrative 256 207 469 407
Other Operating Expense (Income), Net (4) (4) (83) (18)
Total costs and expenses 711 636 1,275 1,259
Income from operations 42 95 204 193
Interest income 2 0 3 1
Interest expense (24) (12) (36) (24)
Other income (expense), net 2 4 3 1
Income before taxes 22 87 174 171
Provision (benefit) for income taxes (27) (1) 16 19
Net Income $ 49 $ 88 $ 158 $ 152
Net income per share:        
Basic (in dollars per share) $ 0.28 $ 0.52 $ 0.91 $ 0.89
Diluted (in dollars per share) $ 0.27 $ 0.51 $ 0.90 $ 0.88
Weighted average shares used in computing net income per share:        
Basic (in shares) 177 170 174 171
Diluted (in shares) 179 172 176 172