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Segment Information - Schedule of Net Revenue by Segment and Business Unit (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2018	Oct. 31, 2017	Oct. 31, 2016
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenue	$ 58,472	$ 52,056	$ 48,238
Total segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenue	58,471	52,057	48,076
Total segments | Personal Systems
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenue	37,661	33,321	29,946
Total segments | Personal Systems | Notebooks
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenue	22,547	19,782	16,982
Total segments | Personal Systems | Desktops
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenue	11,567	10,298	9,956
Total segments | Personal Systems | Workstations
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenue	2,246	2,042	1,870
Total segments | Personal Systems | Other
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenue	1,301	1,199	1,138
Total segments | Printing
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenue	20,805	18,728	18,123
Total segments | Printing | Supplies
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenue	13,575	12,524	11,981
Total segments | Printing | Commercial Hardware
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenue	4,674	3,792	3,792
Total segments | Printing | Consumer Hardware
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenue	2,556	2,412	2,350
Total segments | Corporate Investments
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenue	5	8	7
Other
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenue	$ 1	$ (1)	$ 162

X

- Definition

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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
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-URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

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+ References

No definition available.

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