SEGMENT INFORMATION (Reconciliation of Reportable Results) (Details) - USD ($) $ in Millions	12 Months Ended
Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2017
Reconcilitation between statement results and enterprise results [Abstract]
Total reportable segments' income from operations	$ 1,037	$ 735	$ 598
Share-based compensation expense	(82)	(59)	(56)
Restructuring and related costs	(9)	(17)	(11)
Amortization of acquisition-related balances	(224)	(265)	(256)
Acquisition and integration costs	(9)	(49)	(57)
Acquisition-related compensation expense	0	0	(28)
Separation and related costs	0	(2)	(20)
Pension curtailment and settlement loss (gain)	(2)	(1)	69
Loss from Catastrophes	0	(7)	(16)
Goodwill impairment	0	(709)	0
Litigation Settlement, Expense	0	25	0
Gain (Loss) on Disposition of Business	1	20	0
Other	(3)	(16)	(6)
Income (loss) from operations	711	(394)	148
Interest income	23	12	7
Interest expense	(80)	(83)	(80)
Other income (expense), net	61	54	104
Income (loss) before taxes	715	(411)	179
Segment assets and capital expenditures [Abstract]
Total reportable segments' assets	4,599	4,330
Capital expenditures	120	132	72
Communications Solutions Group
Reconcilitation between statement results and enterprise results [Abstract]
Goodwill impairment		0
Income (loss) from operations	714	474	347
Segment assets and capital expenditures [Abstract]
Total reportable segments' assets	2,267	2,115
Capital expenditures	71	90
Electronic Industrial Solutions Group
Reconcilitation between statement results and enterprise results [Abstract]
Goodwill impairment		0
Income (loss) from operations	294	245	209
Segment assets and capital expenditures [Abstract]
Total reportable segments' assets	928	888
Capital expenditures	29	32
Ixia Solutions Group [Member]
Reconcilitation between statement results and enterprise results [Abstract]
Goodwill impairment		(709)
Income (loss) from operations	29	16	42
Segment assets and capital expenditures [Abstract]
Total reportable segments' assets	1,404	1,327
Capital expenditures	20	10
Total Segments [Member]
Reconcilitation between statement results and enterprise results [Abstract]
Income (loss) from operations	1,037	735	$ 598
Segment assets and capital expenditures [Abstract]
Total reportable segments' assets	4,599	4,330
Capital expenditures	$ 120	$ 132

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