INVENTORY (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Oct. 31, 2017 |
Oct. 31, 2016 |
Oct. 31, 2015 |
|
| Inventory [Line Items] | |||
| Finished goods | $ 363 | $ 339 | |
| Purchased parts and fabricated assemblies | 212 | 194 | |
| Inventory | 575 | 533 | |
| Inventory-related excess and obsolescence charges | $ 24 | $ 20 | $ 30 |