Receivables (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2016	Oct. 31, 2015	Jan. 31, 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	$ 443.5	$ 346.1	$ 334.0
Total Non-Performing	91.0	86.5	72.3
Current	27,274.5	28,659.8	28,592.4
Total Receivables	27,809.0	29,092.4	28,998.7
30-59 Days Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	239.0	193.3	206.2
60-89 Days Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	106.2	91.7	75.5
90 Days or Greater Past Due
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	$ 98.3	61.1	52.3
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	$ 17,877.1		18,833.5
Retail notes | Agriculture and turf
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	249.5	192.3	178.2
Total Non-Performing	51.7	45.8	42.3
Current	15,080.7	15,956.8	16,238.8
Total Receivables	15,381.9	16,194.9	16,459.3
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	130.4	100.2	108.6
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	56.4	48.8	34.6
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	62.7	43.3	35.0
Retail notes | Construction and forestry
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	126.4	102.3	93.7
Total Non-Performing	15.5	17.0	11.6
Current	2,353.3	2,344.8	2,268.9
Total Receivables	2,495.2	2,464.1	2,374.2
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	66.8	61.7	57.9
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	31.5	28.5	25.2
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	10.6
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	$ 2,112.1		1,839.4
Revolving charge accounts | Agriculture and turf
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	37.4	17.3	26.7
Total Non-Performing	1.8	1.8	1.0
Current	2,002.9	2,579.5	1,738.9
Total Receivables	2,042.1	2,598.6	1,766.6
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	25.2	11.4	20.3
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	10.3	5.1	5.3
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	1.9	0.8	1.1
Revolving charge accounts | Construction and forestry
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	3.9	3.2	4.1
Total Non-Performing		0.1
Current	66.1	78.9	68.7
Total Receivables	70.0	82.2	72.8
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	2.2	2.1	2.8
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	1.2	0.8	0.9
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	$ 7,301.2		7,784.8
Wholesale receivables | Agriculture and turf
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	7.3	4.7	11.1
Total Non-Performing	9.5	10.3	1.0
Current	6,273.5	5,981.2	6,886.8
Total Receivables	6,290.3	5,996.2	6,898.9
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	4.5	2.0	5.1
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	1.2	2.1	3.9
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	1.6	0.6	2.1
Wholesale receivables | Construction and forestry
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	1.9	2.2	1.6
Current	1,009.0	1,187.1	884.3
Total Receivables	1,010.9	1,189.3	885.9
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	0.5	0.8	0.1
Wholesale receivables | 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			0.1
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	$ 1.4	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	$ 518.6		541.0
Financing leases | Agriculture and turf
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	12.9	20.2	11.8
Total Non-Performing	9.5	8.2	14.1
Current	322.0	360.8	346.9
Total Receivables	344.4	389.2	372.8
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	6.9	12.3	7.3
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	4.7	5.7	3.7
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	1.3	2.2	0.8
Financing leases | Construction and forestry
Age Analysis of Past Due Receivables That Are Still Accruing Interest and Non-Performing Receivables
Total Past Due	4.2	3.9	6.8
Total Non-Performing	3.0	3.3	2.3
Current	167.0	170.7	159.1
Total Receivables	174.2	177.9	168.2
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	2.5	2.8	4.1
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	0.9	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	$ 0.8	$ 0.4	$ 0.9