GOODWILL AND OTHER INTANGIBLE ASSETS Goodwill Roll forward (Details) $ in Millions	6 Months Ended
Apr. 30, 2020 USD ($)
Goodwill Roll Forward
Goodwill beginning balance	$ 3,593
Foreign currency translation impact	(11)
Goodwill ending balance	3,582
Life Sciences and Applied Markets
Goodwill Roll Forward
Goodwill beginning balance	1,438
Foreign currency translation impact	(4)
Goodwill ending balance	1,434
Diagnostics and Genomics
Goodwill Roll Forward
Goodwill beginning balance	1,594
Foreign currency translation impact	(4)
Goodwill ending balance	1,590
Agilent CrossLab
Goodwill Roll Forward
Goodwill beginning balance	561
Foreign currency translation impact	(3)
Goodwill ending balance	$ 558

Amount of increase (decrease) from foreign currency translation adjustments and purchase accounting adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 16
-URI http://asc.fasb.org/extlink&oid=116868678&loc=d3e961-128460

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267

Name:	us-gaap_GoodwillTranslationAndPurchaseAccountingAdjustments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration