Receivables (Details 3) (USD $) In Millions, unless otherwise specified	3 Months Ended		12 Months Ended
	Jan. 31, 2013	Jan. 31, 2012	Oct. 31, 2012
Recorded Investment
Receivables with specific allowance	$ 0.2	$ 5.1	$ 0.7
Total	8.7	14.8	9.2
Unpaid Principal Balance
Receivables with specific allowance	0.2	5.1	0.7
Total	8.5	14.7	9.1
Specific Allowance	0.1	0.7	0.6
Average Recorded Investment
Receivables with specific allowance	0.2	4.9	0.7
Total	8.7	14.1	9.1
Agriculture and turf
Recorded Investment
Total	6.1	10.8	6.5
Unpaid Principal Balance
Total	5.9	10.8	6.4
Specific Allowance	0.1	0.7	0.6
Average Recorded Investment
Total	6.1	9.9	6.1
Construction and forestry
Recorded Investment
Total	2.6	4.0	2.7
Unpaid Principal Balance
Total	2.6	3.9	2.7
Average Recorded Investment
Total	2.6	4.2	3.0
Retail notes
Recorded Investment
Receivables with specific allowance		0.8
Receivables without specific allowance	8.5	9.7	8.5
Unpaid Principal Balance
Receivables with specific allowance		0.8
Receivables without specific allowance	8.3	9.6	8.4
Specific Allowance		0.5
Average Recorded Investment
Receivables with specific allowance		0.8
Receivables without specific allowance	8.5	9.2	8.4
Revolving charge accounts
Recorded Investment
Receivables with specific allowance			0.5
Unpaid Principal Balance
Receivables with specific allowance			0.5
Specific Allowance			0.5
Average Recorded Investment
Receivables with specific allowance			0.5
Wholesale receivables
Recorded Investment
Receivables with specific allowance	0.2	4.3	0.2
Unpaid Principal Balance
Receivables with specific allowance	0.2	4.3	0.2
Specific Allowance	0.1	0.2	0.1
Average Recorded Investment
Receivables with specific allowance	$ 0.2	$ 4.1	$ 0.2