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GOODWILL AND OTHER INTANGIBLE ASSETS (Tables) | 12 Months Ended
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Oct. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill | The goodwill balances as of October 31, 2019, 2018 and 2017 and the movements in 2019 and 2018 for each of our reportable segments were as follows:
| Communications Solutions Group |  | Electronic Industrial Solutions Group |  | Ixia Solutions Group |  | Total
| (in millions)
Goodwill at October 31, 2017 | $ | 497 |  |  | $ | 268 |  |  | $ | 1,117 |  |  | $ | 1,882 |
Foreign currency translation impact | (2 | ) |  | (2 | ) |  | (1 | ) |  | (5 | )
Goodwill arising from acquisitions | 4 |  |  | 2 |  |  | — |  |  | 6 |
Impairment losses | — |  |  | — |  |  | (709 | ) |  | (709 | )
Divestitures | (2 | ) |  | (1 | ) |  | — |  |  | (3 | )
Goodwill at October 31, 2018 | 497 |  |  | 267 |  |  | 407 |  |  | 1,171 |
Foreign currency translation impact | 8 |  |  | — |  |  | — |  |  | 8 |
Goodwill arising from acquisitions | 30 |  |  | — |  |  | — |  |  | 30 |
Goodwill at October 31, 2019 | $ | 535 |  |  | $ | 267 |  |  | $ | 407 |  |  | $ | 1,209 |
Goodwill | $ | 535 |  |  | $ | 267 |  |  | $ | 1,116 |  |  | $ | 1,918 |
Accumulated impairment losses | — |  |  | — |  |  | (709 | ) |  | (709 | )
Goodwill at October 31, 2019 | $ | 535 |  |  | $ | 267 |  |  | $ | 407 |  |  | $ | 1,209 |
Schedule of Other Intangible Assets by Major Class | ther intangible assets as of October 31, 2019 and 2018 consisted of the following:
| Other Intangible Assets as of October 31, 2019 |  | Other Intangible Assets as of October 31, 2018
| Gross Carrying Amount |  | Accumulated Amortization |  | Net Book Value |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Book Value
| (in millions)
Developed technology | $ | 876 |  |  | $ | 578 |  |  | $ | 298 |  |  | $ | 835 |  |  | $ | 415 |  |  | $ | 420 |
Backlog | 13 |  |  | 13 |  |  | — |  |  | 13 |  |  | 13 |  |  | — |
Trademark/Tradename | 34 |  |  | 21 |  |  | 13 |  |  | 33 |  |  | 14 |  |  | 19 |
Customer relationships | 316 |  |  | 139 |  |  | 177 |  |  | 304 |  |  | 100 |  |  | 204 |
Non-compete agreements | 1 |  |  | 1 |  |  | — |  |  | 1 |  |  | — |  |  | 1 |
Total amortizable intangible assets | 1,240 |  |  | 752 |  |  | 488 |  |  | 1,186 |  |  | 542 |  |  | 644 |
In-Process R&D | 2 |  |  | — |  |  | 2 |  |  | 1 |  |  | — |  |  | 1 |
Total | $ | 1,242 |  |  | $ | 752 |  |  | $ | 490 |  |  | $ | 1,187 |  |  | $ | 542 |  |  | $ | 645 |

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