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Subsequent Events	12 Months Ended
	Oct. 31, 2021
Subsequent Events [Abstract]
Subsequent Events	SUBSEQUENT EVENTSegment Reporting Changes. To enable our growth strategies and strengthen our focus on customers, we announced subsequent to year end that we will move our chemistries and supplies business as well as our remarketed instruments business from our Agilent CrossLab business segment to our life sciences and applied markets business segment. In addition we will move our service revenue and cost of sales related to the acquisition of BioTek from our life sciences and applied markets business segment to our Agilent CrossLab business segment. Following this reorganization, Agilent will continue to have three business segments (life sciences and applied markets, diagnostics and genomics and Agilent CrossLab), each of which will continue to comprise a reportable segment. All historical segment numbers for our life sciences and applied markets and Agilent CrossLab segments will be recast to conform to this new reporting structure in our financial statements, beginning with our Form 10-Q filing for the first quarter of fiscal year 2022.

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- Definition

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI http://asc.fasb.org/topic&trid=2122774

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662

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