Receivables (Details 3) (USD $) In Millions, unless otherwise specified	6 Months Ended		12 Months Ended
	Apr. 30, 2013	Apr. 30, 2012	Oct. 31, 2012
Recorded Investment
Receivables with specific allowance	$ 18.9	$ 1.0	$ 0.7
Total	27.1	9.2	9.2
Unpaid Principal Balance
Receivables with specific allowance	18.9	1.0	0.7
Total	26.9	9.1	9.1
Specific Allowance	3.9	0.5	0.6
Average Recorded Investment
Receivables with specific allowance	19.3	1.2	0.7
Total	27.7	9.4	9.1
Agriculture and turf
Recorded Investment
Total	24.6	6.6	6.5
Unpaid Principal Balance
Total	24.5	6.5	6.4
Specific Allowance	3.9	0.5	0.6
Average Recorded Investment
Total	25.1	6.2	6.1
Construction and forestry
Recorded Investment
Total	2.5	2.6	2.7
Unpaid Principal Balance
Total	2.4	2.6	2.7
Average Recorded Investment
Total	2.6	3.2	3.0
Retail notes
Recorded Investment
Receivables without specific allowance	8.2	8.0	8.5
Unpaid Principal Balance
Receivables without specific allowance	8.0	7.9	8.4
Average Recorded Investment
Receivables without specific allowance	8.4	8.0	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	1.0	0.2
Receivables without specific allowance		0.2
Unpaid Principal Balance
Receivables with specific allowance	0.2	1.0	0.2
Receivables without specific allowance		0.2
Specific Allowance	0.2	0.5	0.1
Average Recorded Investment
Receivables with specific allowance	0.2	1.2	0.2
Receivables without specific allowance		0.2
Operating loans
Recorded Investment
Receivables with specific allowance	18.7
Unpaid Principal Balance
Receivables with specific allowance	18.7
Specific Allowance	3.7
Average Recorded Investment
Receivables with specific allowance	$ 19.1