Receivables (Details) - USD ($) $ in Millions	6 Months Ended
	Apr. 30, 2016	Oct. 31, 2015	Apr. 30, 2015
Receivable, Past Due
Minimum number of days for a receivable to be considered past due	30 days
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	$ 458.9	$ 346.1	$ 348.3
Total Non-Performing	108.4	86.5	78.0
Current	28,756.1	28,659.8	29,708.1
Total Receivables	29,323.4	29,092.4	30,134.4
30-59 Days Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	230.2	193.3	183.4
60-89 Days Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	99.5	91.7	87.5
90 Days or Greater Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	$ 129.2	61.1	77.4
Retail notes
Receivable, Past Due
Generally the approximate number of days before a receivable is considered to be non-performing, accrual of finance income is suspended and the estimated uncollectible amount is written off	120 days
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Receivables	$ 17,493.3		18,452.3
Retail notes | Agriculture and turf
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	241.8	192.3	186.3
Total Non-Performing	61.8	45.8	42.6
Current	14,687.9	15,956.8	15,856.3
Total Receivables	14,991.5	16,194.9	16,085.2
Retail notes | Agriculture and turf | 30-59 Days Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	121.0	100.2	95.9
Retail notes | Agriculture and turf | 60-89 Days Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	54.7	48.8	48.2
Retail notes | Agriculture and turf | 90 Days or Greater Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	66.1	43.3	42.2
Retail notes | Construction and forestry
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	131.4	102.3	88.1
Total Non-Performing	20.0	17.0	16.4
Current	2,350.4	2,344.8	2,262.6
Total Receivables	2,501.8	2,464.1	2,367.1
Retail notes | Construction and forestry | 30-59 Days Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	75.0	61.7	52.4
Retail notes | Construction and forestry | 60-89 Days Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	28.3	28.5	23.7
Retail notes | Construction and forestry | 90 Days or Greater Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	$ 28.1	12.1	12.0
Revolving charge accounts
Receivable, Past Due
Generally the approximate number of days before a receivable is considered to be non-performing, accrual of finance income is suspended and the estimated uncollectible amount is written off	120 days
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Receivables	$ 2,581.7		2,290.7
Revolving charge accounts | Agriculture and turf
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	53.5	17.3	40.0
Total Non-Performing	1.9	1.8	1.2
Current	2,453.2	2,579.5	2,175.8
Total Receivables	2,508.6	2,598.6	2,217.0
Revolving charge accounts | Agriculture and turf | 30-59 Days Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	16.9	11.4	12.4
Revolving charge accounts | Agriculture and turf | 60-89 Days Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	6.1	5.1	8.6
Revolving charge accounts | Agriculture and turf | 90 Days or Greater Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	30.5	0.8	19.0
Revolving charge accounts | Construction and forestry
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	3.6	3.2	4.0
Total Non-Performing		0.1
Current	69.5	78.9	69.7
Total Receivables	73.1	82.2	73.7
Revolving charge accounts | Construction and forestry | 30-59 Days Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	2.1	2.1	2.9
Revolving charge accounts | Construction and forestry | 60-89 Days Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	1.0	0.8	0.7
Revolving charge accounts | Construction and forestry | 90 Days or Greater Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	$ 0.5	0.3	0.4
Wholesale receivables
Receivable, Past Due
Generally the approximate number of days before a receivable is considered to be non-performing, accrual of finance income is suspended and the estimated uncollectible amount is written off	60 days
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Receivables	$ 8,711.0		8,856.2
Wholesale receivables | Agriculture and turf
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	8.3	4.7	6.5
Total Non-Performing	11.8	10.3	0.4
Current	7,516.5	5,981.2	7,558.2
Total Receivables	7,536.6	5,996.2	7,565.1
Wholesale receivables | Agriculture and turf | 30-59 Days Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	1.9	2.0	2.9
Wholesale receivables | Agriculture and turf | 60-89 Days Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	5.9	2.1	1.6
Wholesale receivables | Agriculture and turf | 90 Days or Greater Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	0.5	0.6	2.0
Wholesale receivables | Construction and forestry
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	4.8	2.2	2.9
Current	1,169.6	1,187.1	1,288.2
Total Receivables	1,174.4	1,189.3	1,291.1
Wholesale receivables | Construction and forestry | 30-59 Days Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	2.6	0.8	1.5
Wholesale receivables | Construction and forestry | 90 Days or Greater Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	$ 2.2	1.4	1.4
Financing leases
Receivable, Past Due
Generally the approximate number of days before a receivable is considered to be non-performing, accrual of finance income is suspended and the estimated uncollectible amount is written off	120 days
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Receivables	$ 537.4		535.2
Financing leases | Agriculture and turf
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	11.6	20.2	17.2
Total Non-Performing	9.3	8.2	13.1
Current	338.4	360.8	333.4
Total Receivables	359.3	389.2	363.7
Financing leases | Agriculture and turf | 30-59 Days Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	8.0	12.3	14.0
Financing leases | Agriculture and turf | 60-89 Days Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	2.7	5.7	2.9
Financing leases | Agriculture and turf | 90 Days or Greater Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	0.9	2.2	0.3
Financing leases | Construction and forestry
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	3.9	3.9	3.3
Total Non-Performing	3.6	3.3	4.3
Current	170.6	170.7	163.9
Total Receivables	178.1	177.9	171.5
Financing leases | Construction and forestry | 30-59 Days Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	2.7	2.8	1.4
Financing leases | Construction and forestry | 60-89 Days Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	0.8	0.7	1.8
Financing leases | Construction and forestry | 90 Days or Greater Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	$ 0.4	$ 0.4	$ 0.1