Receivables (Details 2) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2016	Apr. 30, 2015	Apr. 30, 2016	Apr. 30, 2015	Oct. 31, 2015
Allowance:
Beginning of period balance	$ 109.8	$ 111.5	$ 109.8	$ 112.4
Provision (credit) for credit losses	20.2	11.2	27.6	12.1
Write-offs	(24.7)	(16.8)	(37.2)	(22.9)
Recoveries	6.6	5.5	12.2	10.7
Other changes (primarily translation adjustments)	0.5	(0.2)		(1.1)
End of period balance	112.4	111.2	112.4	111.2
Balance individually evaluated	3.0	2.0	3.0	2.0
Receivables:
End of period balance	29,323.4	30,134.4	29,323.4	30,134.4	$ 29,092.4
Balance individually evaluated	53.3	22.0	53.3	22.0
Retail notes
Allowance:
Beginning of period balance	53.2	55.5	53.3	56.1
Provision (credit) for credit losses	8.9	3.7	14.3	4.6
Write-offs	(8.8)	(5.0)	(15.1)	(7.4)
Recoveries	1.9	1.6	3.0	3.0
Other changes (primarily translation adjustments)	0.3	(0.1)		(0.6)
End of period balance	55.5	55.7	55.5	55.7
Balance individually evaluated	1.6	1.7	1.6	1.7
Receivables:
End of period balance	17,493.3	18,452.3	17,493.3	18,452.3
Balance individually evaluated	33.5	19.1	33.5	19.1
Revolving charge accounts
Allowance:
Beginning of period balance	39.7	39.9	39.7	39.9
Provision (credit) for credit losses	10.3	7.7	12.0	7.5
Write-offs	(14.8)	(11.2)	(21.0)	(14.8)
Recoveries	4.5	3.5	9.0	7.3
End of period balance	39.7	39.9	39.7	39.9
Balance individually evaluated		0.2		0.2
Receivables:
End of period balance	2,581.7	2,290.7	2,581.7	2,290.7
Balance individually evaluated	1.8	0.2	1.8	0.2
Wholesale receivables
Allowance:
Beginning of period balance	8.1	7.3	8.1	7.6
Provision (credit) for credit losses	0.1	(0.5)	0.1	(0.4)
Write-offs				(0.2)
Recoveries		0.4		0.4
Other changes (primarily translation adjustments)	0.2		0.2	(0.2)
End of period balance	8.4	7.2	8.4	7.2
Balance individually evaluated	1.3	0.1	1.3	0.1
Receivables:
End of period balance	8,711.0	8,856.2	8,711.0	8,856.2
Balance individually evaluated	16.7	2.7	16.7	2.7
Financing leases
Allowance:
Beginning of period balance	8.8	8.8	8.7	8.8
Provision (credit) for credit losses	0.9	0.3	1.2	0.4
Write-offs	(1.1)	(0.6)	(1.1)	(0.5)
Recoveries	0.2		0.2
Other changes (primarily translation adjustments)		(0.1)	(0.2)	(0.3)
End of period balance	8.8	8.4	8.8	8.4
Balance individually evaluated	0.1		0.1
Receivables:
End of period balance	537.4	$ 535.2	537.4	$ 535.2
Balance individually evaluated	$ 1.3		$ 1.3