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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