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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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/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
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Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts.

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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(a))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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SEGMENT AND GEOGRAPHIC AREA DATA - Segment Net Sales and Revenues (Details) $ in Millions	3 Months Ended								12 Months Ended
	Oct. 31, 2016 USD ($)	Jul. 31, 2016 USD ($)	Apr. 30, 2016 USD ($)	Jan. 31, 2016 USD ($)	Oct. 31, 2015 USD ($)	Jul. 31, 2015 USD ($)	Apr. 30, 2015 USD ($)	Jan. 31, 2015 USD ($)	Oct. 31, 2016 USD ($) item	Oct. 31, 2015 USD ($)	Oct. 31, 2014 USD ($)
Operating Segments
Number of major business segments \| item									3
Net Sales and Revenues
Total net sales	$ 5,650.0	$ 5,861.0	$ 7,107.0	$ 4,769.0	$ 5,932.0	$ 6,839.0	$ 7,399.0	$ 5,605.0	$ 23,387.3	$ 25,775.2	$ 32,960.6
Total	$ 6,520.0	$ 6,724.0	$ 7,875.0	$ 5,525.0	$ 6,715.0	$ 7,594.0	$ 8,171.0	$ 6,383.0	26,644.0	28,862.8	36,066.9
Other Revenues
Net Sales and Revenues
Total									563.0	497.0	529.0
Agriculture and Turf
Net Sales and Revenues
Total net sales									18,487.0	19,812.0	26,380.0
Agriculture and Turf \| Intersegment Sales and Revenue
Net Sales and Revenues
Total									31.0	49.0	89.0
Construction and Forestry
Net Sales and Revenues
Total net sales									4,900.0	5,963.0	6,581.0
Construction and Forestry \| Intersegment Sales and Revenue
Net Sales and Revenues
Total									1.0	1.0	1.0
Financial Services
Net Sales and Revenues
Total									2,694.0	2,591.0	2,577.0
Financial Services \| Intersegment Sales and Revenue
Net Sales and Revenues
Total									$ 225.0	$ 225.0	$ 228.0