Receivables (Details 2) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2015	Jul. 31, 2014	Oct. 31, 2014
Allowance:
Beginning of period balance	$ 111.2	$ 109.7	$ 112.4	$ 111.4
Provision (credit) for credit losses	17.4	17.1	29.5	24.0
Write-offs	(25.3)	(13.0)	(48.2)	(30.9)
Recoveries	6.8	5.6	17.5	15.0
Other changes (primarily translation adjustments)	(0.3)		(1.4)	(0.1)
End of period balance	109.8	119.4	109.8	119.4
Balance individually evaluated	0.8	11.9	0.8	11.9
Receivables:
End of period balance	30,372.7	31,416.3	30,372.7	31,416.3	$ 30,505.9
Balance individually evaluated	23.7	145.9	23.7	145.9
Retail notes
Allowance:
Beginning of period balance	55.7	53.4	56.1	50.7
Provision (credit) for credit losses	3.2	1.9	7.8	9.4
Write-offs	(6.4)	(2.7)	(13.8)	(9.7)
Recoveries	2.1	1.5	5.1	3.9
Other changes (primarily translation adjustments)	(0.2)		(0.8)	(0.2)
End of period balance	54.4	54.1	54.4	54.1
Balance individually evaluated	0.8	1.5	0.8	1.5
Receivables:
End of period balance	18,554.9	18,987.6	18,554.9	18,987.6
Balance individually evaluated	19.5	43.8	19.5	43.8
Revolving charge accounts
Allowance:
Beginning of period balance	39.9	39.7	39.9	39.7
Provision (credit) for credit losses	13.4	6.3	20.9	9.7
Write-offs	(18.2)	(10.1)	(33.0)	(20.3)
Recoveries	4.6	4.0	11.9	10.8
End of period balance	39.7	39.9	39.7	39.9
Balance individually evaluated		0.2		0.2
Receivables:
End of period balance	2,618.4	2,493.8	2,618.4	2,493.8
Balance individually evaluated	3.0	0.9	3.0	0.9
Wholesale receivables
Allowance:
Beginning of period balance	7.2	6.6	7.6	6.4
Provision (credit) for credit losses	0.3	8.4	(0.1)	8.7
Write-offs	(0.1)		(0.3)	(0.3)
Recoveries	0.1		0.5	0.1
Other changes (primarily translation adjustments)	(0.1)		(0.3)	0.1
End of period balance	7.4	15.0	7.4	15.0
Balance individually evaluated		8.4		8.4
Receivables:
End of period balance	8,660.5	9,345.4	8,660.5	9,345.4
Balance individually evaluated	1.2	91.4	1.2	91.4
Other
Allowance:
Beginning of period balance	8.4	10.0	8.8	14.6
Provision (credit) for credit losses	0.5	0.5	0.9	(3.8)
Write-offs	(0.6)	(0.2)	(1.1)	(0.6)
Recoveries		0.1		0.2
Other changes (primarily translation adjustments)			(0.3)
End of period balance	8.3	10.4	8.3	10.4
Balance individually evaluated		1.8		1.8
Receivables:
End of period balance	$ 538.9	589.5	$ 538.9	589.5
Balance individually evaluated		$ 9.8		$ 9.8