Receivables - Impaired Receivables (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
Apr. 29, 2018	Apr. 30, 2017	Oct. 29, 2017
Recorded Investment
Receivables with specific allowance	$ 7.7	$ 7.9	$ 13.9
Receivables without specific allowance	27.6	10.0	27.3
Total	35.3	17.9	41.2
Unpaid Principal Balance
Receivables with specific allowance	7.7	7.7	13.8
Receivables without specific allowance	27.4	9.9	27.0
Total	35.1	17.6	40.8
Specific Allowance	2.7	3.4	3.2
Average Recorded Investment
Receivables with specific allowance	9.2	8.1	13.2
Receivables without specific allowance	30.8	11.4	16.3
Total	40.0	19.5	29.5
Agriculture and turf
Recorded Investment
Total	29.4	12.0	36.0
Unpaid Principal Balance
Total	29.2	11.9	35.6
Specific Allowance	2.6	2.9	3.2
Average Recorded Investment
Total	33.8	13.1	23.9
Construction and forestry
Recorded Investment
Total	5.9	5.9	5.2
Unpaid Principal Balance
Total	5.9	5.7	5.2
Specific Allowance	0.1	0.5
Average Recorded Investment
Total	6.2	6.4	5.6
Retail notes
Recorded Investment
Receivables with specific allowance	0.8	4.8	2.2
Receivables without specific allowance	25.7	9.8	18.3
Unpaid Principal Balance
Receivables with specific allowance	0.8	4.6	2.1
Receivables without specific allowance	25.6	9.7	18.0
Specific Allowance	0.1	0.6	0.6
Average Recorded Investment
Receivables with specific allowance	0.9	5.0	2.2
Receivables without specific allowance	26.6	11.2	14.0
Revolving charge accounts
Recorded Investment
Receivables with specific allowance		2.6
Unpaid Principal Balance
Receivables with specific allowance		2.6
Specific Allowance		2.6
Average Recorded Investment
Receivables with specific allowance		2.6
Wholesale receivables
Recorded Investment
Receivables with specific allowance	6.7		11.7
Receivables without specific allowance	1.9	0.2	9.0
Unpaid Principal Balance
Receivables with specific allowance	6.7		11.7
Receivables without specific allowance	1.8	0.2	9.0
Specific Allowance	2.5		2.6
Average Recorded Investment
Receivables with specific allowance	8.1		11.0
Receivables without specific allowance	4.2	0.2	$ 2.3
Financing leases
Recorded Investment
Receivables with specific allowance	0.2	0.5
Unpaid Principal Balance
Receivables with specific allowance	0.2	0.5
Specific Allowance	0.1	0.2
Average Recorded Investment
Receivables with specific allowance	$ 0.2	$ 0.5

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=84173941&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=84173941&loc=d3e5258-111524

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5258-111524

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-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524

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