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SEGMENT INFORMATION - Profitability (Details) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2017 USD ($)	Jul. 31, 2016 USD ($)	Jul. 31, 2017 USD ($)	Jul. 31, 2016 USD ($)
Segment Reporting Information
Number of operating segments	3
Segment Reporting Information
Net revenue	$ 1,114	$ 1,044	$ 3,283	$ 3,091
Income from operations	201	146	608	432
Life Sciences and Applied Markets
Segment Reporting Information
Net revenue	531	504	1,594	1,525
Income from operations	113	96	349	304
Diagnostics and Genomics
Segment Reporting Information
Net revenue	197	180	562	516
Income from operations	33	34	105	76
Agilent CrossLab
Segment Reporting Information
Net revenue	386	360	1,127	1,050
Income from operations	90	82	246	232
Segment Total
Segment Reporting Information
Net revenue	1,114	1,044	3,283	3,091
Income from operations	$ 236	$ 212	$ 700	$ 612

X

- Definition

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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The net result for the period of deducting operating expenses from operating revenues.

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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