Allowance for Credit Losses and Credit Quality of Receivables - Impaired Receivables (Details) - USD ($) $ in Millions	12 Months Ended
Oct. 31, 2016	Oct. 31, 2015
Recorded Investment
Receivables with specific allowance	$ 10.9	$ 10.5
Receivables without specific allowance	9.7	10.1
Total	20.6	20.6
Unpaid Principal Balance
Receivables with specific allowance	10.5	10.4
Receivables without specific allowance	9.6	10.1
Total	20.1	20.5
Specific Allowance	2.6	1.2
Average Recorded Investment
Receivables with specific allowance	12.5	10.4
Receivables without specific allowance	10.9	12.5
Total	23.4	22.9
Agriculture and turf
Recorded Investment
Total	11.9	16.9
Unpaid Principal Balance
Total	11.6	16.8
Specific Allowance	1.9	1.0
Average Recorded Investment
Total	10.2	18.0
Construction and forestry
Recorded Investment
Total	8.7	3.7
Unpaid Principal Balance
Total	8.5	3.7
Specific Allowance	0.7	0.2
Average Recorded Investment
Total	13.2	4.9
Retail notes
Recorded Investment
Receivables with specific allowance	10.2
Receivables without specific allowance	9.5	9.5
Unpaid Principal Balance
Receivables with specific allowance	9.9
Receivables without specific allowance	9.4	9.5
Specific Allowance	2.3
Average Recorded Investment
Receivables with specific allowance	10.6
Receivables without specific allowance	10.6	11.8
Wholesale receivables
Recorded Investment
Receivables with specific allowance	0.3	9.7
Receivables without specific allowance	0.2	0.6
Unpaid Principal Balance
Receivables with specific allowance	0.3	9.7
Receivables without specific allowance	0.2	0.6
Specific Allowance	0.2	1.0
Average Recorded Investment
Receivables with specific allowance	1.5	9.7
Receivables without specific allowance	0.3	0.7
Financing leases
Recorded Investment
Receivables with specific allowance	0.4	0.8
Unpaid Principal Balance
Receivables with specific allowance	0.3	0.7
Specific Allowance	0.1	0.2
Average Recorded Investment
Receivables with specific allowance	$ 0.4	$ 0.7

Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5212-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5258-111524

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-Name Accounting Standards Codification
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=65880944

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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