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SEGMENT INFORMATION (Profitability) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Oct. 31, 2019 | Oct. 31, 2018 | Oct. 31, 2017
Segment Reporting Information [Line Items] |  |  |
Total net revenue | $ 4,303 | $ 3,878 | $ 3,189
Income statement components (Loss) [Abstract] |  |  |
Revenues | 4,303 |  |
Income (loss) from operations | 711 | (394) | 148
Depreciation expense | 96 | 103 | 92
Communications Solutions Group |  |  |
Segment Reporting Information [Line Items] |  |  |
Total net revenue | 2,688 | 2,391 | 2,063
Income statement components (Loss) [Abstract] |  |  |
Amortization of acquisition-related balances | 0 | 1 | 1
Revenues | 2,688 |  |
Income (loss) from operations | 714 | 474 | 347
Depreciation expense | 55 | 64 | 62
Electronic Industrial Solutions Group |  |  |
Segment Reporting Information [Line Items] |  |  |
Total net revenue | 1,135 | 1,071 | 929
Income statement components (Loss) [Abstract] |  |  |
Amortization of acquisition-related balances | 0 | 0 | 0
Revenues | 1,135 |  |
Income (loss) from operations | 294 | 245 | 209
Depreciation expense | 22 | 23 | 23
Ixia Solutions Group [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Total net revenue | 480 | 416 | 197
Income statement components (Loss) [Abstract] |  |  |
Amortization of acquisition-related balances | 9 | 35 | 59
Revenues | 480 |  |
Income (loss) from operations | 29 | 16 | 42
Depreciation expense | 19 | 16 | 7
Total Segments [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Total net revenue | 4,303 | 3,878 | 3,189
Income statement components (Loss) [Abstract] |  |  |
Amortization of acquisition-related balances | 9 | 36 | 60
Revenues | 4,312 | 3,914 | 3,249
Income (loss) from operations | 1,037 | 735 | 598
Depreciation expense | 96 | 103 | 92
Operating Segments [Member] | Communications Solutions Group |  |  |
Income statement components (Loss) [Abstract] |  |  |
Revenues | 2,688 | 2,392 | 2,064
Operating Segments [Member] | Electronic Industrial Solutions Group |  |  |
Income statement components (Loss) [Abstract] |  |  |
Revenues | 1,135 | 1,071 | 929
Operating Segments [Member] | Ixia Solutions Group [Member] |  |  |
Income statement components (Loss) [Abstract] |  |  |
Revenues | $ 489 | $ 451 | $ 256

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