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REVENUE (Details) $ in Millions	12 Months Ended
	Oct. 31, 2019 USD ($)
Disaggregation of Revenue [Line Items]
Revenues	$ 4,303
Communications Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	2,688
Electronic Industrial Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	1,135
Ixia Solutions Group [Member]
Disaggregation of Revenue [Line Items]
Revenues	480
Americas [Member]
Disaggregation of Revenue [Line Items]
Revenues	1,724
Americas [Member] | Communications Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	1,185
Americas [Member] | Electronic Industrial Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	250
Americas [Member] | Ixia Solutions Group [Member]
Disaggregation of Revenue [Line Items]
Revenues	289
Europe [Member]
Disaggregation of Revenue [Line Items]
Revenues	713
Europe [Member] | Communications Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	385
Europe [Member] | Electronic Industrial Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	257
Europe [Member] | Ixia Solutions Group [Member]
Disaggregation of Revenue [Line Items]
Revenues	71
Asia Pacific [Member]
Disaggregation of Revenue [Line Items]
Revenues	1,866
Asia Pacific [Member] | Communications Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	1,118
Asia Pacific [Member] | Electronic Industrial Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	628
Asia Pacific [Member] | Ixia Solutions Group [Member]
Disaggregation of Revenue [Line Items]
Revenues	120
Aerospace, Defense & Government
Disaggregation of Revenue [Line Items]
Revenues	975
Aerospace, Defense & Government | Communications Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	975
Aerospace, Defense & Government | Electronic Industrial Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	0
Aerospace, Defense & Government | Ixia Solutions Group [Member]
Disaggregation of Revenue [Line Items]
Revenues	0
Commercial Communications
Disaggregation of Revenue [Line Items]
Revenues	1,713
Commercial Communications | Communications Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	1,713
Commercial Communications | Electronic Industrial Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	0
Commercial Communications | Ixia Solutions Group [Member]
Disaggregation of Revenue [Line Items]
Revenues	0
Electronic Industrial
Disaggregation of Revenue [Line Items]
Revenues	1,135
Electronic Industrial | Communications Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	0
Electronic Industrial | Electronic Industrial Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	1,135
Electronic Industrial | Ixia Solutions Group [Member]
Disaggregation of Revenue [Line Items]
Revenues	0
Ixia
Disaggregation of Revenue [Line Items]
Revenues	480
Ixia | Communications Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	0
Ixia | Electronic Industrial Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	0
Ixia | Ixia Solutions Group [Member]
Disaggregation of Revenue [Line Items]
Revenues	480
Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Revenues	3,785
Transferred at Point in Time [Member] | Communications Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	2,452
Transferred at Point in Time [Member] | Electronic Industrial Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	1,037
Transferred at Point in Time [Member] | Ixia Solutions Group [Member]
Disaggregation of Revenue [Line Items]
Revenues	296
Transferred over Time [Member]
Disaggregation of Revenue [Line Items]
Revenues	518
Transferred over Time [Member] | Communications Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	236
Transferred over Time [Member] | Electronic Industrial Solutions Group
Disaggregation of Revenue [Line Items]
Revenues	98
Transferred over Time [Member] | Ixia Solutions Group [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 184

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(1))
-URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227

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